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[Music] Based on the kind of videos you guys like, one thing is clear. Story-driven games and murder. So, let's take a look at one of the best examples of that genre, Undertale. And to celebrate nearly 10 years of the game being out,
A 40-minute deep dive into Undertale's lore, exploring its story, characters, and multiple endings.
Key Takeaways
- Undertale’s story is deeply tied to the concept of souls and determination.
- Player choices drastically affect the game’s narrative and endings.
- Flowey is a central antagonist born from tragedy and scientific experimentation.
- The game explores themes of coexistence, conflict, and redemption.
- Understanding the lore enhances appreciation of the characters and multiple endings.
What the video covers
- Undertale is set in a world where monsters and humans coexist but are divided by conflict and racism.
- Human souls possess determination, allowing persistence after death, while monsters can absorb souls to gain power.
- A war leads to monsters being sealed underground beneath Mount Ebbett, with a barrier that requires seven souls to break.
- A human child named Cara falls into the underground, befriends Azriel, but dies from poisoning, leading to Azriel becoming the villainous Flowey.
- The game features three main endings: pacifist, neutral, and genocide, each shaped by player choices.
- The neutral run allows players to mix sparing and killing monsters, progressing through areas like the Ruins and Snowden.
- Key characters such as Toriel, Asgore, Sans, Alphys, and Undyne play pivotal roles in the story and player interactions.
- Flowey is a dangerous antagonist created from Azriel’s soul combined with determination, seeking to collect seven souls to break the barrier.
- The pacifist run culminates in mercy and friendship, while the genocide run involves killing all monsters.
- The lore is rich with themes of hope, loss, and the consequences of player actions, making Undertale a unique narrative experience.
Chapters
- 00:00Introduction & Undertale World Overview
- 02:26Cara and Azriel’s Story and Flowey’s Origin
- 04:50Neutral Run Explained: Ruins and Toriel
- 06:37Meeting Sans and Progressing to Snowden
- 08:56Alphys and Hotland
- 13:30Pacifist Run and Final Encounters
- 18:45Flowey’s Defeat and Ending Variations
- 22:00Summary and Reflections on Undertale’s Lore
Full Transcript — Download SRT & Markdown
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here's the entire lore in just 30 minutes. Ready, set, go. Undertale begins in a world similar to ours.
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Similar in almost everything except that monsters coexist with humans. Yeah, you can see where this is going. You see, monsters and humans don't like each other. And according to history, that means only one thing, racism. You see, the world of Undertale revolves around
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souls. In this world, human souls are far more powerful than monster souls, as they have the power to persist after death, called determination. But monsters have the power to absorb human souls to become enormously strong. This basically starts a world war in which
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the humans absolutely demolish the monsters. It seems humans are quite accurate too, as they are in real life. As the next reasonable step is apartheid, they lock the monsters underneath a mountain called Mount Ebbett in which a
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seal is placed that uses soul power. You can easily get in, but to get out you need to absorb both the souls of a human and a monster combined. Now you may be saying, what if a human falls in by
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accident? Luckily, we don't have to guess as one day some stupid child named Cara decides to go cave diving and falls face first into the underground. Falling into the underground injured, she calls out for help and is quickly assisted by
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Azriel, the son of Asgore, king of the underground, and his wife Toriel. Now, you may be thinking that because there are monsters nearby, Cara would start squaring up and getting ready for World War II. But instead, Cara and Azriel
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become best friends. Cara basically gets adopted by his family, and the underground is filled with a sense of hope. Hope? Why? Well, Cara, seeing the underground, dreams of one day breaking the barrier fully, allowing monsters and humans to coexist peacefully. However,
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that dream is cut short because Cara eats a butterscotch pie. Now, you may be saying, "Oh, that sounds lovely," but this butterscotch pie is made with buttercup flowers, which are quite literally poisonous to human beings. So, Cara becomes really sick, terminally
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ill, and Cara's last wish is to be able to see the golden flowers back at her home village on the surface one day. As Cara passes away, it's about time that we recall that soul stuff I was talking
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about earlier. Azriel basically absorbs Cara's soul, and with their combined souls, they exit the barrier to fulfill Cara's final wish. Rather than being embraced, as they go up to the top, they are attacked by the village of humans.
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Cara, in a fit of rage, wants to kill the humans attacking, but Azriel resists and holds back from fighting them. In the end, this results in both of them dying as this Cara-Azriel amalgamation makes their way back to the underground
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where their combined dust scatters across the very flowers that Cara fell down in the first place. Not knowing what to do, the kingdom scrambles to try and find a fix. Remember that determination thing I told you about earlier? It's the power that allows
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souls to stay alive after death that is present in humans. The royal scientist Alphys decides that to try and revive Azriel, they could inject pure determination into the flowers and hopefully the dust scattered across the flowers would stir to life. It works,
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but not in the way you would have imagined. Azriel basically incarnates into a yellow sentient flower with all of Azriel's memories. You might be saying, "Ah, that's cute. You know, it's a cute flower." Well, guess what?
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You're wrong. Azriel now lacks both a human or a monster soul, which basically turns Azriel evil, now taking the form of Flowey. I promise you, he's more dangerous than he looks. Anyway, because of the death of his son, Asgore is
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distraught and his once dream of cooperation fades away. From now on, no matter the scenario, any human that enters the underground is killed.
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Unfortunately, six souls follow the place of Cara. And eventually, his goal is to collect seven total souls to break the silly barrier for good and destroy all humans. Toriel, his wife, is absolutely disgusted by Asgore and decides to leave him, focusing on making
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sure that any human that falls into the ruins is safe. Now, you may be saying, "This is boring. When is Sans's Undertale coming in?" He's coming. I promise. Just give me a few minutes. Now that we're all caught up on the
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backstory, it's important to understand that Undertale has three major endings: a pacifist run, a neutral run, and a genocide run. Each of which largely changes the ending to the story. Now, I'm going to be honest. There's like some crazy Doctor Strange tenant
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alternate realities going on here as the beauty of this game is that your actions have consequences. But I'm just going to be really general with these endings for simplicity's sake. In order to unlock the pacifist run, we have to do a neutral
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run first. So, let's start with that. Basically, we make the same mistake that seven other kids did and fall face first into the underground. Immediately, we meet Flowey, who seems pretty wholesome, you know, showing us friendless pellets.
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But in reality, yeah, this flower is on crack or something because he's trying to kill us. But before we die to a flower, Toriel ends up saving us. She explains that she is the protector of these ruins, and she protects any human
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that falls into the underground. So, as Toriel leads us home, I guess it's time I explain now how the neutral ending works. Basically, this route requires that rather than killing every single monster or sparing every single monster, we can choose to spare or kill whoever
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we want. So, as Toriel leaves us to ourselves in the ruins, we need to solve a few puzzles to get to the next area.
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Eventually, after a few encounters, we finally find Toriel, who's waiting for us. So, naturally, we have to follow our anthropomorphic goat mom into our new house. Honestly, this is kind of nice.
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We have our own room, books for days, all in a house, which honestly is pretty good compared to the current real estate. Anyway, distractions aside, we need to make our way to the next area, Snowden. No time for messing around. So,
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we sneak into the basement and just as we're about to leave, yeah, we're dragged back. She tells us to play upstairs like a good kid, but let's be honest, this place is kind of boring.
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So, we annoy her until she tells us how to get the hell out of here. She eventually complies, albeit we do notice something is off with her. Up ahead lies the end of the ruins, the gateway towards the rest of the underworld. And
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she tells us that she's going to destroy it for good so that no one else can enter or exit. As we persist behind her, she tells us that every human faces the same fate, but not us because we're
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built different, obviously. So, we piss her off like the third, fourth time, and she uses her final resort, a 1v1.
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Well, she's not going to kill us or anything. She just kind of wants to see if we're capable of defending ourselves out there. These aren't really attacks.
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It's actually kind of tough for us to die in this fight. But at the end of the day, we can choose to either spare or fight her. But no matter the choice, she'll tell us one thing for certain.
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Beware of Asgore, the king of the underworld. As if he learns of our existence, he'll no doubt take our soul.
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So, we heed her advice and make our way out of the ruins into Snowden. So, as we're walking towards Snowden, Flowey tries to intimidate us or something, but then we realize that this guy can't survive without photosynthesis. So, we
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walk past Flowey. And as we enter the snowy area towards Snowden, we hear some crunching in the snow. So, who could that possibly be? Yeah, this here is Sans. And despite looking like a cat grandma at first glance, he seems qui
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harmless. You see, he was put on watch for humans. And although he doesn't care much at all, his brother Papyrus, on the other hand, is always on the lookout for us. So, we hide behind a conveniently made lamp. Papyrus comes in angry at his
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brother for not calibrating the puzzles for human hunting. You see, Papyrus is desperate to find a human so that he can impress the head of the royal guard, Undying. We'll talk more about her in a second, but for now, it doesn't take a
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detective to see that Papyrus, he he isn't all there, but his intention is in the right place. And so, Sans asks us to play along with this game for a little while and mess with his puzzles. So, we
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go puzzle by puzzle and eventually dismantle them one by one. We also learned that Sans has some interesting abilities. You know, weird. But anyway, it doesn't matter too much right now as we finally passed all of the challenges.
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And now we're at the town of Snowden. There are all sorts of things to explore here like an inn, a bar, a library. So, naturally, out of all of those, we go to the library where we actually learn a
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little bit more about the underground. Anyway, reading is boring, so we leave Snowden. But as we're leaving, Papyrus confronts us as he's conflicted between capturing or befriending us. However, he chooses to fight. And again, because it's the neutral ending, it doesn't
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really matter what we do in the scenario, so long as we're not killing every single monster. Anyway, as we pass Snowden, we enter Waterfall. Yes, that's the name of the area. And we meet a guy named Monster Kid. Remember the head of
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the royal guard, Undy? Well, now is a great time to explain a bit more about her, too. Seeing as though Asgore is just on the brink of destroying the barrier, he needs someone reliable enough to track down any humans.
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Unfortunately, Papyrus doesn't really fit that bill, but Undyne absolutely does. She's basically the LeBron James of the underworld. So, we learn that Monster Kid is a massive fan of Undyne and asks us if we want to see her in
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action, too. We kind of just keep walking until we make some noise in the grass and Undyne nearly spots us.
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Thankfully, we're able to slide away for now. As we walk to this weird waterfall of wishes, as we interact with each of the flowers, we can actually hear about the wishes of the underground to achieve freedom and the hope in the king to
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accomplish it. We read ancient markings on the walls speaking of how it would take every single monster soul to amount to just one human soul. Anyway, we keep going again. Undy spots us. So, you get the idea. We're basically doing a
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Minecraft manhunt to safety. However, after traversing waterfall and messing about with the monster kid, it's not long before we enter a bridge where Undyne chases us again. We see those spears erect from the ground. So, it's basically like those water parks that
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spray jet streams upwards. Basically, bedays of death. Anyway, it's not long before we get cornered and we are pissing ourselves. We can no longer run away from our problems and we have to confront Undy face to face. Thankfully,
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the engineers that made this bridge were smoking something insane cuz the bridge falls down and we end up in New York.
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Uh, I I mean the lower area of Waterfall. Long story short, we end up beefing with a dummy, end up taking mad edibles with a ghost, and start gambling on snail races. But all of that is a prelude to an inevitable fight with
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Undying. So, we try to gather as much information as possible about her while we're down here. We learn about her upbringing as she was trained from a young age to be part of the Royal Guard.
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So, now we're definitely pissing ourselves, and especially so, as when we navigate this maze, we find Undyne right behind us. She tells us that of the infinity stones on Asgore's gauntlet, we are the final stone. And either we give
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it up voluntarily or she'll take it by force. With our soul in their possession, Asgore will become so powerful that he can imbue the same torture that the monsters faced on the humans. As we're backed off into a
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corner, the option to escape remains no longer, leaving the only other option to fight. The fight is pretty easy, but we can choose to spare or kill her in the scenario your choice. In the scenario that we do choose to kill her, we, you
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know, just get light work, kill her, solve her puzzles, and she isn't dying yet. That's because Undy is built different. We are like Ivon Drago, and Undy is Rocky. No matter how many times we empty that health bar, she can
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persist beyond death. This, ladies and gentlemen, is our foray into determination, as her soul can persist beyond death, even as a monster. Keep this in mind. It'll be very important later. Regardless, we move past into the next area, Hotland, which as the name
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suggests is quite human. Hotland is home to one major checkpoint that we have to take a look at, and that is Alfus' lab.
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So, upon entering her lab, we meet her in the flesh, and we can just tell that being social isn't her strong suit, but she is crazy smart, as she is Asgore's royal scientist. She seems harmless enough on her own. But the important
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part is that she created a robot called Metaton under the premise that it would hunt down and kill humans. Imagine Chad Gybt on steroids and we actually do get to see him in the flesh or or the metal
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as he wants to do a pop quiz. Now, fortunately, this is multiple choice because otherwise I don't think I need another reminder of needing to study for tests as we get some pretty simple questions. However, as we go on, the
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questions devolve into math problems, sequence memory tests, and to be honest, just plain luck. But thankfully, we're able to make it through this test over here, getting a nice phone upgrade from Alfus in the process and allowing us to
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make our way past Alfus's lab. Now, we're getting closer and closer to the core. Anyways, now that we have Alfie's contact information, the rest of Hotland is a breeze as we just have to solve a few puzzles with her help. So, with the
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puzzle complete, no barriers stand in our way of the core. We hear from Alfus that the core is the source of all of the underground's power. Now, we're not at all interested in fossil fuels or energy creation. Rather, the core has a
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connection to Asgore's castle, allowing us to make our way back home. So, without further ado, we enter the core.
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The core is much like Hotland, except we have two puzzles, one in the north and one in the south. So, upon solving them, we enter the next room. And seeing as the core is mostly vacant, spiders spend their time around here. So, as we
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traverse through the cobwebs, we hear some strange laughter. And we come to know that these spiders don't seem to like us too much. Before we know it, we're flanked with a few dozen spiders.
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And here is where we find Muffet. She's sort of the gang leader of spiders, I guess. And besides the fire music that's playing in the background, this boss fight is relatively easy. With that, we can move aside from Muffet. And with her
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death, a small spider places a flower where her dust is scattered. Okay, I'm like spitting bars. Anyway, with Muffet defeated, only two more obstacles stand in the way of our success. Medaton and Asgore. All we have to do is head to
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Medaton's MTT hotel. So to get to him, we have to walk in this sort of cyberspace looking area. We pass by more monsters and lasers, traversing strange paths and monsters along the way until finally it's him. After all the
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encounters, it's finally time for the 1v one. Medaton tells us that Alfus has been helping us this entire time just so we could grow attached to the underworld and not leave to the surface. Whatever it is, I can't wait to put this cleverly
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coded string of ones and zeros out of commission. We engage in the fight and none of our attacks are landing. Medaton tells us that he plans to take our soul and cross the border and end up becoming a star on the surface. Thankfully, we
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have Alphus on call with us to assist with the situation. Apparently, on the back side of Medaton, there's a kill switch, which we never get to see because he's always facing forward. So, we tell this GPT clone that the only
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reason he has info is because of humans and end up flipping the switch. But apparently, this didn't do what we wanted. Now, instead of GPT4, this guy is GPT5. Now, with this new form, Medaton EX, he has some increased power.
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Thankfully, piece by piece, we take away his arms and end up defeating him once and for all. With Medaton defeated, he passes away happy, as he got to perform for a human. Alfus seems pretty upset that Medaton is dead now, but more upset
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about the fact that we're leaving. She tells us one important tidbit, though, as Medaton concluded, she did indeed lie, but about a different thing. She told us that we just needed a human soul to cross the border, but we also need a
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monster soul, too. Meaning at this point, we're going to have to kill Asgore. Well, that wasn't in the terms and conditions, but regardless, we take the elevator up to swaths of gray. And as we proceed further, we come across a
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barren, empty home. As solemn music fills our ears and yellow buttercups contrast with the colorless background, we recall the story I told you at the beginning. The story of Cara and Azriel.
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these halls and rooms that feel so familiar. And despite killing a few and sparing others, when we look into the mirror, it's still us. Despite everything, we are an arms length away from freedom. For a moment, we think
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about if this is what we truly want. With baited breath, we enter the castle.
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And now, Sans isn't stopping us at all. At least not yet. Rather, he tells us instead about the fact that all monsters we've chosen to spare or kill will have an impact on the outcome of our situation. Undertale at this point
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literally asks you to think on every decision you made and could you have done it differently? Like maybe killing Papyrus wasn't the best idea.
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Regardless, Sans steps aside and the last thing we see before the end are the resting places of the souls of the former humans. One more Chaos Emerald, one more Infinity Stone needed to break the barrier for good. We come across
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Asgore watering the flowers. So far, he doesn't seem as people described as one that is power- hungry, ever eager to escape into this real world. He tells us that when we are ready, we should head to the other room. In the colorless
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abyss that remains, only one thing is stopping us from getting to freedom. Asgore. But what if what Sans said was right? Maybe sparing him would be the right op. Oh well, this is the last obstacle after all. So with mercy out of
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the question, we fight tooth and nail and finally defeat him. His final words speak about how he got to this state.
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Basically him getting rejected by his wife and family. But we learn about who Asgore truly is. He never wanted to hurt anyone. He just wanted to see his son again. He tells us to take his soul and with it leave so that we can find our
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peace. This misconrusion of who Asgore is leads us to a quandry. This whole time we thought this guy was just an obstacle when in reality he was a better person than we thought. With that torn apart Mercy Button, we try to piece it
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back together and change our ways from before. Rather than killing every boss mob like we did with Undyne or Papyrus, we try to give mercy to Asgore. Despite everything, he's shocked at what we say.
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And maybe life in the underground isn't bad at all. But then, yeah, Flowey over here murders his own pops and then proceeds to take a note from Sonic the Hedgehog and uses the souls like Chaos Emeralds. And with
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that, we spawn into a dark room. Our save file actually removed. But with these souls absorbed, Flowey turns into whatever the hell this is. I mean, come on. This guy looks like something I'd make in kindergarten. Regardless, Flowey
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tells us the same maxim that he did before. It's kill or be killed. And then we get absolute bullet hell for this surprise final boss. We're able to sneak in a few hits, but it's no good. Flowey now has all sorts of control on
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timelines and our save file as a result. So, we call for help and we start to notice that the souls inside Flowey actually help us. After our brief reprieve from hell, we're thrust right back in a few more times. But each time
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we struggle, we're equally met with the souls inside Flowey helping us. The same souls that have a piece to Flowey's assault actually end up healing us back to full health. They show themselves as patience integrity bravery kindness perseverance, and justice. And chip
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damage after chip damage, these souls help us despite Flowey's best efforts to reset our save file to the start of the fight until all the souls that fuel Flowey now strip him of his power. With that, Flowey becomes an emo. And
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learning from the Asgore fight, we decide that even after everything he did, we should give him mercy. The easy path would just be ending it here. But after all we've done, we at least owe it to everyone to learn to forgive. Even
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despite Flow's intent to come back and do even worse, to eventually kill us, no matter how long it takes, we persist in forgiveness. All until it becomes unbearable for Flowey, and he runs away.
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So, as the neutral end comes to a close, Flowey asks us what would happen if we tried again, learning from our mistakes, and this time sparing every monster we see. And this is where we get into the pacifist run.
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Okay, let's do this one more time, shall we? Now, one thing to note is that this version of the run is the longest and most difficult by far. But if it was easy, it wouldn't be worthwhile. Flowey having control of the timeline reminds
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us not to control anyone, which thanks I guess. But the start of the story progresses as we saw before. Seemingly as though it didn't happen, Toriel picks us up again and guides us through the basic puzzles. But the biggest change
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gets into effect when we're asked to fight the training dummy. Instead of killing it, we simply talk to it and the battle ends. Notice particularly how our levels or exp rise. So, as we dodge or spare every single encounter thus far,
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we eventually enter Toriel's crib with the intent of, of course, leaving right away. This time, when Toriel fights us, we change our mentality. Instead of attacking, we simply talk to her and evade her attacks. She doesn't really respond or anything, but by seeing these
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ellipses, we can tell that her stubborn demeanor is getting to her. And after a certain point, it's like she's not even trying. I mean, you technically can die from this fight, albeit it's very rare.
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Fun little tidbit. But seeing as though we don't intend to hurt her at all, she tries to persuade us one last time to stay with her, but after a while, she lets it go. And with that, the first
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boss is spared. One down, a few more to go. So, we walk back in the snowy path once more. And yeah, that's kind of weird. I thought something was supposed to happen. Yep, it's Sans again. Nothing really new to know except the fact that
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he might have also had some higher power in the game as he senses we've been through the motions before. But nevertheless, we do the same things as we did before. Meet Papyrus, start solving his puzzles, make sure to spare
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this dog guy, push around a PNG of a snowball, you know, the regular stuff.
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Not much changes as we solve each puzzle and make our way into Snowden. Our main objective is the fight with Papyrus. As in this fight, you have to choose to spare him. However, this one kind of deviates from the others. You see, we
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have to use the flirt option to get through to him. As Papyrus wants to impress Undy, he wants to capture us.
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But if we tell him that we'll go out on a date with him, he'll slowly start to reconsider. The attacks start to get lighter and lighter until finally he decides to have pity on us and spare us.
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So, as the blizzard clears, it marks another monster that we saved. So, rather than just heading to Waterfall, as we did before, we actually have to take a detour to Papyrus's crib. Now, legal disclaimer, children, don't just go walking into somebody's crib on the
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first date, but Papyrus is different. So, we go into his crib, and immediately, I'm jealous of his car bed.
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It's It's time for the dating simulator to commence. Unfortunately, I'll let my most popular video on my channel describe my experience with dating girls. Basically, a few cheesy pickup lines and a quick change in outfit later, we learn that Papyrus can't
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handle our sheer dating skills, and thankfully, we're let off the hook. Anyway, we make our way to Waterfall again, this time with the intent of sparing Undyne. This time, some new dialogue occurs. Papyrus comes to tell Undy to perhaps reconsider killing us.
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But it seems that his convincing didn't work because Undyne still chases after us as usual. And we can certainly run but not hide as eventually we have to confront Undy face to face. So, as we've done with every single monster, we do
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accordingly with Undyne. But if you read what Undyne says, if we face danger headon and persist, we can actually flee the battle and try to run. Sure, she catches up, but all of this is to delay long enough to run to hot land, where,
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as she's a fish, she ends up drying out. Now, we could leave her here, but we're kind people, so we take this conveniently placed water cooler and give her some water. Enough for her to actually escape back to Waterfall, at
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least. Seeing as she ran away, we can actually go visit her house now to check on her condition. Now, she doesn't seem too happy that we're in her presence, but after Papyrus convinces her and we spend a bit more time with her, she
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eventually comes around. Perfect. Next destination, a pit stop at Alfus's lab. Then we can go to Hotland. Now, there isn't any change in dialogue for Alfus.
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But this area will be important in a bit. Our main business in Hotland is one thing, to get to Medaton's hotel, which will trigger a cut scene from Undyne.
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So, we solve the puzzles, casually burn down a kitchen. We spare Muffet, just the regular things. Well, actually, she kind of spares us because we didn't hurt a single spider back at the ruins.
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Finally, back at the hotel, and there should be nothing stopping us. Oh god, it's him. As we step inside this hotel restaurant, melancholic music fill our ears over the sounds of clinking cutlery. This time we've hardly got a
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chance to smell our flowers on this run. The ambiencece seems calm, too calm almost. Sans speaks about how he's rooting for us to escape and how us leaving the underworld reminds him of himself and how he once gave up trying
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to go back a really long time ago. He talks to us about conversations he had with Toriel and how Toriel asked Sans to keep a watchful eye on us. A that sounds nice. Well, I wonder what would happen
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if you didn't. Oh well. Okay then. What kind of game is this? The equalizer. We brush aside his silly death threats and of course we make our way to Medaton EX. However, rather than killing him by force, we
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decide to kill him with our killer dance moves. And honestly, Medaton realizes that his GPT isn't strong enough to handle our dance moves and tragically combusts. Perfect. Now, we're finally in the position to get the call from Undyne. The reason why this call is
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important is because Undy gives us a letter. Do you remember how I said that Alphus' lab would be important? Well, that's because we slide this letter underneath to Alphus to go through another arduous practice date. But all of this is for one reason, and that is
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to access a secret area in Alphus' lab. It might be hard to recall, but at the start of the video, I mentioned how Flowey was created by Alphus injecting determination into flowers. Well, it turns out that Flowey wasn't the only
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experiment she conducted. Alphus has a lot of secrets, but amongst them all, this is the largest. She writes a letter telling us that who she truly is and what she truly did has been undercovers.
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But it's about time that we learn about the truth about her and her studies. So, we pull the curtain and head downstairs into the true lab. It's here that we see the true extent of Alfus' research. The notes on the wall suggest that the goal
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was simple, to try and use the remnants of Azriel to try and combine human souls with monster souls. We venture deeper into this dark crypt and learn that fallen monsters were the subject of Alphus' experiments. Such as it is, we
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make our way through this operating room and we decide to wash our face and we end up seeing exactly what her experiments resulted in. Ladies and gentlemen, these aren't my kindergarten art projects. These are amalgamates.
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Failed attempts at combining dead monsters with human souls. Dead or not, we have to spare them nonetheless. Need to collect these keys that seem to be powering up an elevator. So, basically, Undertale becomes Five Nights in the True Lab, and we navigate our way
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deeper. As we're looking for more of the same keys, we encounter more amalgamates, like this treble cleft looking thing, stingray guy, spaceship with legs, and before we know it, we make it to the main room of the true
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lab. We enter a room with a TV and numerous VHS tapes, all depicting the same story I explained at the beginning.
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The death of Cara and the subsequent desire to flee the underground. We persist despite the spooky creatures we meet. And eventually, with all keys in place, the main elevator opens up towards a power room. As the main generator is there, we hear sounds and
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steps behind us and they turn out to be Alfus, who comes in thanking us first, but then explaining her position and involvement in this research. Those monsters are actually melted together monsters that couldn't sustain themselves with the injected
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determination. Regardless, Alphus now has a change of heart and is willing to come clean about her experiments to the families affected. With pretty much all loose ends tied together, we step towards the elevator, eager for our journeys finale. But we recall one
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missing detail. Alfus did inject determination into a flower. Right. As we press the button towards an upper floor, we receive an anonymous call.
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It's been a long time, hasn't it? But you've done well. Thanks to you, everything is in place. Well, you're welcome, I guess. Anyway, as we approach our journeys end, we walk towards the castle walls, past the mirror that
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reflects our journey, and meet Asgore face to face. It's a gorgeous day in the flower fields with the birds chirping and the buttercup flowers blooming. We reflect on our path so far, and we vow to continue it. But as we face him,
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Toriel knocks him away. She says she couldn't leave us just yet. But it's not only her. We're accompanied by Undyne, Alfie, Papyrus, Sands, Medaton. All of them are here in our favor. Maybe, just maybe, this whole idea of escaping isn't
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what we should really consider. We've made so many friends, helped so many people, why would we leave now? So, as we're this close to our happy ending, all gathered together, the same principle leads to the very worst outcome. Because there's one person
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missing from this reunion. Flowey. Flowey misled Papyrus into bringing everyone here. a diversion good enough to snag the souls whilst the opportunity was there. As it would turn out, Flowey's idea of sparing was only for his own benefit. Finally, he gives us
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the ultimatum that we've heard since the beginning. Kill or be killed. One by one, he takes our friends's souls and harnesses them to achieve his final form. Crazy go. I mean, Azreal Dreamer.
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Via the souls of our friends, he now has the power of all of them combined. And by no means is this an easy fight, but it raises the question, how do we approach it? With our friends dead, do
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we take revenge or do we spare him? Well, this is the pacifist run after all. So, we persist, dodging and leaving it up to pure hope. With the timeline in Azriel's hand, all he wants is to reset it. Reset everything to absolute zero.
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So, as crazy star powers and rainbow nan cap blasters damage us, the only thing that are keeping us alive are hopes and dreams. But then he uses his special attack, drugs. Somehow, he absorbs the entire timeline himself and gains
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immense power. And we can't even move. So with that, this is it. The culmination of our peaceful run, the happy ending, whatever you want. It ends here. It's legitimately just an endless loop of dying. But the only thing that's
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stitching us together is our pure determination and hope. With our options running out, he tells us that there's no point in saving as soon we won't be able to do anything, and all the memories and friends that we made along the way will
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soon be gone. But we decide that if anything, we may as well make one last stitch effort to try and save our friends's memories. So with our back against the wall, we reach deep within Azriel and we end up finding that the
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friends that we thought were dead are actually alive, just corrupted. So with the scraps of the conversations that we remember and the little tidbits that made these characters so charming, we're able to soul by soul recover their memories. So we're able to save our
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friends, but deep down we know that there's one more person that needs saving. Azriel himself. as we overload him with mercy when he tries to kill us, it's too much for him to handle. And we learn about his true character. We learn
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that behind all of the power, at the end of the day, it's just a scared kid. And regardless of the fact that Azreel tried to kill us, we reach out to throw bone to one more person. With each attack he
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throws at us, we spare him each and every single turn until finally we see Azreel as he normally is, just a kid. In this pacifist run, we're able to make our final verdict. Do we grant him mercy or not? And despite all the pain that he
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gave everyone, we decide to forgive him. And with that, he breaks the barrier. As we wake up, we meet up with all of our friends. And the last thing we do before we leave the underground is to pass by
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all the places where we made memories. Be it the castle, Medaton's Hotel, Hot Land, Waterfall, Snowden, and finally the ruins. In the bed of the flowers that we landed in, we find Azreel watering the buttercups. We make one
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last attempt to bring him with us, but to no avail. We go back to the barrier and with our friends, we make it to the surface. As we look off into the sunset, accompanied with what we thought were
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once enemies, we finally get our happy ending. But with those same enemies as friends. So, we did it. We've granted our friends the peaceful ending. But one ending remains. Flowey looks at us. We can give the monsters what they want,
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their peaceful ending, their happy ending, and allow them to roam freely. But we reflect on that adage that Flowey told us, kill or be killed.
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Immediately as we reset our save, our focus shifts from sparing to murdering every single monster. If you think about it, every RPG follows the same principle. And actually, if you do a genocide run in Undertale, it's impossible to ever get a true pacifist
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run. Nothing really changes from the beginning. We break Flow's ankles and start navigating the ruins. As we get our first encounter, it's important that we basically kill every monster and then some. To do this, we have to walk around
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and forcefully trigger encounters, not sparing a single monster. We're so merciless in our murder that we know that we're on the right track when upon triggering an encounter, we realize that no monster is even there for us to
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fight. Immediately, there's a tone shift. The music becomes somber and slower than before. And encounter by encounter, we realize that we've eradicated this entire area. As usual, we have one intent, to get out of these ruins. It's not long till we get bored
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of Toriel's house and then we ask her to leave. And as she intends to destroy our only way out, the only thing left to do is well yeah, we one-shot her. It turns out that she wasn't protecting us from the
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outside world. Rather, she should have shifted her focus to protect the outside world from us. As her soul fades, we see Flowey again, whose memories were reset along with our pacifist save file.
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Flowey thinks that our ideologies fit perfectly with this plan now and that we're much the same. Little does he know that we have something in store for him later. So, with the ruins cleared, our next goal becomes to clear out Snowden.
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Again, we see a figure behind us. Who could it be? All right, you know, that's the last time I'm doing it. I promise. However, the dialogue definitely does change. The funny cutscenes of the other runs contrast completely with these ones that
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hold a much darker undertone. When we press the save button, we see an interesting feature. It begins to countdown every soul in that area in deep red. Well, we can't stop now. We eradicate any snow drake. This dog over
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here, even that snowman that wishes to see the surface becomes just a meaningless pile of water. As if the game understands our intent, we notice that most puzzles are either omitted or solved for us. most likely by Flowey. As
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we talk to Sans over here, he tells us that if we keep persisting in our murderous intent, we're gonna have a bad time. Regardless, we ignore his comments and go back to our favorite activity, kill farming. As the music slows down,
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Snowden has just one person left that we need to kill. Papyrus. Upon walking in Snowden's town, the stores, the houses, every single area is left vacant. As the once lively town seems a gasast, we steal from behind the counter of the
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store, reading the only note left there. Please don't hurt my family. We discard the note and walk past the barren town and head to where we need to be. As we aim to fight Papyrus, the game tries to
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make you abandon that path. Papyrus thinks that such as we are, we still have an opportunity to become a better person. As he offers his mercy, we take that as a wonderful opportunity to kill him dead. And as in the final moments he
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hopes for a better future for us, he passes away. His dust scattering across the snow. So with Snowden complete, our next goal becomes waterfall. We slowly eradicate each and every single portion of the area. And we find items that make
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our life a little easier, such as the ballet shoes that allow us to triple hit monsters. Slowly, we notice that the exclamation mark is replaced with a smile upon each encounter, hinting that the player is gaining more pleasure from
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killing rather than shock. The same flowers that preach the dreams of Monster Kind are now silent. We persist onwards until we see Monster Kid over here near the bridge. The only friendly person, I guess, to us thus far. And he
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tells us that Undy wants him to stay away from us. But as he was the last remaining soul in Snowden, we should eradicate him too, right? As we step forward to kill him, Undy takes the brunt of the hit. Well, it seems that
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Monster Kid was useful after all, as he led us straight to Undyne. That slash definitely seemed like enough to kill her, no doubt. But as Undyne's soul is fizzing out, she seems to be holding on with the thoughts of her friends. For
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the first time, we face the protagonist as we are the final boss. So rather than dying, she basically mega evolves into Undying the Undying. Unlike the previous monsters, this one's a little tougher.
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Even the music gets pretty epic, which is a shame because her attacks aren't too much harder from normal. She's the toughest by far, bar none. We'll give her that as she has more health than any monster we face. But attack by attack,
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we're able to chip her down. And if you don't play too many rhythm games, this part can get kind of too hard. However, no cute outfit change or banger music is enough to kill us just yet. As we send
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her to the same place as the rest of them, he tries to hold on, telling us that she has her friends behind her and that Alfus was watching in the background should anything go wrong. All to evacuate any monsters that we might
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try and kill. By now, Asgore has been told to absorb the six souls himself.
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So, as our greatest foe evaporates, the clock is ticking. Most of Hotland should be vacated. But at the very least, there's one person who wouldn't mind a guest. That would be Metaton. So, as we enter Alfus' vacant lab, our next goal
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becomes simple. Kill the rest of these monsters one by one and get back to that hotel where the last line of defense awaits us. The core in our sights, Muffet and her spiders, which were once boss monsters, are reduced to just a
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click of a button. And before long, we find ourselves in Metaton's hotel. Fitting the theme, all puzzles are turned off for us. But much to our delight, Metaton is still here. And it turns out that GPT5 over here actually
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has a new form, GPT6. Medaton has a new form called Medaton Neo, which was the original form designed to actually kill humans. But unfortunately, the fight is not that interesting as he gets one shot. Well, the only thing that remains
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is getting out of here. So, we go into Asgore's home lest he uses those six souls. But actually, as we arrive here, we meet up with Flowey. He seems to be a little shook, but we learn more about
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his lore as a character and how when he turned into a flower, nobody came to assist him. The presence of a real soul had turned Flowey emotionless, going from peaceful runs to neutral runs and killing just like we did in every single
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timeline. But as we enter the final area, he tells us that among everyone, he could never predict us. He says that we're connected in a way, and even if we had to, we wouldn't hesitate to kill Flowey if we got in each other's way.
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But he should have been wiser to say that to such a merciless killer as ourselves as Flowie is now pissing himself trying to retract his statement.
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But it's no problem. We'll save him for after Asgore. All that's left is the final corridor where we meet Sans. We're prepared for the usual spiel that our actions have consequences. Yada yada yada. Of all the people we fought thus
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far, somehow this comedian is the last line of defense. Sans tells us not to step any further or he'll be forced to fight. So with pleasure, we ask him to entertain us as he is a comedian. after all. And honestly, do I even have to
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explain this fight? All of a sudden, those attacks string together, that music kicks in, and we realize that we're here in the end game. Strangely enough, our attacks aren't doing any damage to him, so we know we're in for a
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long one. We notice that despite Sans's usually aloof behavior, there's much behind the scenes that we don't see.
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Sans definitely isn't like the rest of them. He does have weird abilities, but it seem he has the ability to read and understand timelines and save files.
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Such as he is, we can slowly notice that he is getting tired. Swing after swing and attack after attack, Sans Undertale finally has to use his special attack of pausing the fight and not allowing us to attack, keeping us here until the end of
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time. However, little does Sans know we have 200 IQ. As the fatigue sets in and his breathing becomes heavy, he slowly falls asleep. With that, we move our way to the attack button and catching him off guard, we kill the last remaining
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monster in the underworld. With that, Sans has been killed and we have now reached level 20, the maximum we can go.
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Only Asgore remains in our pursuit of clearing this world for good. This is a piece of cake compared to the rest though, as we don't even have to slash him. Rather, Flowey comes in and steals the glory, killing him for us. I almost
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forgot about Flowey, actually. Seeing that we've grown far beyond anyone's power, even his. Flowey gets pretty scared and tries everything he can do to make sure we don't kill him. as his final words echo into the empty expanse.
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Please don't kill me. We slash him not once, not twice, but until he becomes compost. So, as it fades to black with the world destroyed, we meet a character that I've spoken at length about, but we've never actually seen Cara. As
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Flowey was a mix of Cara and Azriel, Cara thanks us for fulfilling our plan.
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As this world has been cleared monster by monster, she asks us one thing, to erase this pointless world forever and move on to the next. As this decision weighs on our mind, I'd like you, the viewer, to pause and think about how you
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would end the game. Would it be neutral, sparing those who you formed connections with? Would it be the pacifist run, making friends with everyone and sparing the underworld? Or would it be this one, murdering souls with glee and granting
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every soul pain, eager to erase this world and move on to the next run?
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Whatever this verdict may be, I leave this decision up to you.
Topics:UndertaleUndertale loreFloweyAzrielTorielAsgoreSansAlphysUndynepacifist run
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