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"At first, I was so confused.
Our plan had failed, hadn't it?
Why was I brought back to life?
...
You.
With your guidance.
I realized the purpose of my reincarnation.
Power."

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"At --->'''Fallen Child:''' At first, I was so confused.
confused.\\
Our plan had failed, hadn't it?
it?\\
Why was I brought back to life?
...
You.
life?\\
...\\
You.\\
With your guidance.
guidance.\\
I realized the purpose of my reincarnation.
reincarnation.\\
Power."
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new fridge brilliance with sans no-hitting the player

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* Some particularly skilled players pride themselves on killing Sans (as well as many other video game bosses) without taking any avoidable damage. However, due to his [[OneHitPointWonder sole use of dodging attacks]] to avoid dying, Sans [[SugarWiki/MomentOfAwesome "no-hits" many players numerous times in a row]].
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*** Additionally, the reason for the SOUL WARNING's is becsuse the SOUL's ''themselves'' are warning you about Flowey using then.

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*** Additionally, the reason for the SOUL WARNING's is becsuse because the SOUL's ''themselves'' are warning you about Flowey using then.them.

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* In Undyne’s Genocide Route Song Battle Against a True Hero, you can hear a sped-up version of Don’t Give Up. Of course, she is [[ArcWords determined]] to strike you down.
* Also, both Papyrus’ and Undyne’s catchphrases sound very similar (“NYEH HEH HEH!” and “NGAHHHH!!”)
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* In the Neutral ending where Asgore, Toriel, and Undyne (but not necessarily Papyrus) are dead, Mettaton becomes the new ruler. After all, to spare him, you have to boost his ratings to an ungodly degree.
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* In the True Pacifist Route, everyone except Papyrus is covered in two vines: Papyrus is covered in ''four''. Undyne also mentions that Papyrus is "pretty freakin' tough", Papyrus implies on an aborted Genocide Route that he has Gaster Blasters, and if you keep doing the Neutral Route, Flowey mentions that it took him a while to get bored of Papyrus. Putting all that together, it's implied that [[RageBreakingPoint Flowey fucked up enough to make Papyrus go all-out]], ''[[HorrifyingTheHorror and he was so brutal that Flowey had to be careful with Papyrus and make sure he doesn't do that again]]''.
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-->''[[KillEmAll Strive every day to increase your "LOVE."]] [[GenocideFromTheInside Remember, "LOVE" comes easiest from friends]] [[SelfMadeOrphan and family]]. [[SlasherSmile =)]]''

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-->''[[KillEmAll Strive every day to increase your "LOVE."]] [[GenocideFromTheInside Remember, "LOVE" comes easiest from friends]] [[SelfMadeOrphan and family]].and]] [[SiblingMurder fam]][[OffingTheOffspring ily]]. [[SlasherSmile =)]]''
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* Flowey is the only monster in the Underground capable of bringing even a Pacifist player's HP to 1, and he takes several swipes by Chara to destroy. This is because Flowey is not a monster or a human and thus not subjected to the same rules. He's more of a Amalgamate without a SOUL, or a flower possessed by a monster rather than a monster himself. In Undertale monsters are so weak to humans because they possess almost no actual physical matter, being made up of magic, while humans are made up of physical matter almost entirely. As such, Flowey is significantly more powerful and takes more to kill because he's made up of much more physical matter than any other being in the Underground besides the player themselves.
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** Although none of these theories would quite make sense since, y'know, monsters turn into dust when killed...

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** Although none of these theories would quite make sense since, y'know, monsters turn into dust when killed... They're more likely to be made out of cardboard which is another popular [[{{Fanon}} fan interperation]], if anything.
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** Although none of these theories would quite make sense since, y'know, monsters turn into dust when killed...
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** He and Papyrus were also ordered by Undyne to capture any human that falls down. A fallen child would pass the ruins, thus him being right by the entrance would be the correct place to be. Depending on which run the player goes for, he will either regret his decision to listen to Toriel instead of Undyne or not.
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*** The game strongly implies that Papyrus learned fighting properly from Undyne and that Sans learned some fighting from Papyrus. Considering what a nightmare Sans attack BEFORE his special attack is and that Papyrus complains that his special attack got stolen by the dog, it might well be that if not for the dog, players could have been ''decimated'' if Papyrus had not lost his bones.
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*** It's more likely that it's because it seems likely that [[https://www.reddit.com/r/Undertale/comments/9tej2w/delta_rune_revealed_why_sans_bleeds_tiny_dr/ Sans is a Darkener, and ''not'' a Monster]]. While Monsters are made up of ''Mercy'', compassion and love, Darkeners are made up of flesh and bone like humans. Sans doesn't give the option of MercyInvincibility not because you don't necssarily deserve it, but beause he's a Darkener and can willingly choose to give you that option ''because he isn't made up of Mercy''.
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* Why does Sans constantly teleport around and change his expression as he's attacking you? Because he's trying to distract ''you'', the Player, by making you look at him rather than his attacks.
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* Alphy's master plan, as explained by Mettaton is to make the human like her so much, they won't want to leave. If she had suceeded, it would actually accomplish the goal that Asgore had assigned her. Keep the human from reaching the Palace.

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FridgeLogic: On the [[Headscratchers/{{Undertale}} headscratchers]] page.

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\n----
FridgeLogic: On the [[Headscratchers/{{Undertale}} headscratchers]] page.page.
----
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* Why didn't Flowey act sociopathic until later on? Because people who once had the capacity for empathy, only to lose it, retain their sense of morality. Why did he snap anyway? He himself admitted to being in a permanent state of fragmentation near the end of the Genocide Route.

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* Why didn't Flowey act sociopathic until later on? Because people who once had the capacity for empathy, only to lose it, retain their sense of morality. Why did he snap anyway? He himself admitted to being in a permanent state of fragmentation near the end of the Genocide Route. Not to mention the discovery of saving and loading was bound to get boring after a while with no emotions.




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* Why is Asriel the only one to ask why Frisk went to the mountain to begin with? Because Chara admitted their own reason to Asriel, even if Asgore and Toriel were not aware of it. For all we know, when Asriel says "everyone" knows the mountain as a place of no return, he might only mean the humans, and monsters might not even be aware how the humans think of their home.

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* Sans’s judgments, as well as the Neutral Endings, are good or bad precisely in the order of how good or bad the player acted, which is more complicated than just “higher kill count means worse judgment and ending”:
** First, the best possible judgment you can get is only if you have killed nobody. This is not necessarily a True Pacifist Run though, because a player might still mess up and kill Asgore or Flowey, and even if they don’t they’ll still get a Neutral ending if they don’t go to the True Lab. However, killing Asgore or Flowey would be rather out of character for the player at that point, since they have learned how to solve their problems nonviolently.
** Approaching Sans with more than 0 Exp., but still LV 1, will make him disgusted with you. After all, it’s pretty much impossible that any player would do this without intending to, considering that there is no reason for a Neutral player to stop killing before having leveled up unless they already know the twist in advance, so Sans knows you’re just doing it to see what he’ll say.
** The same applies to a LV 2 player, with Sans saying “who gets to lv2 on accident?” Killing any monster outside the Ruins will put you above LV 2, and within the Ruins, you will reach that level in at most five battles (and that only in the unlikely case that they are all Whimsuns) which is less than the number of encounters you’ll have just making it to Toriel’s house. The Exp. curve just in the Ruins means that you’d likely get just enough Exp. to reach LV 3 unless you deliberately stopped fighting while still in the Ruins, which no first-timer would ever do. It may not be strictly ''impossible'' to reach LV 2 and no higher by accident, but it’s so unlikely that there is no need to consider it.
** Being at LV 3 gives the player the only judgment other than 0 Exp. that isn’t a TheReasonYouSuckSpeech in disguise. This is because someone playing the game blind will almost certainly be at this level when they reach Toriel and first start being shamed for killing monsters, so once they Reset and find a way to spare Toriel they will likely be a pacifist from then on, avoiding any unnecessary kills for the remainder of the game. Since the player still killed someone Sans still doesn’t give them a ''good'' grade, but recognizes that they weren’t doing it on purpose and so can be forgiven.
** Between LV 4 and 9 he says that the player deliberately killed at least some monsters, but admits that it may have been in self-defense so he isn’t sure how to judge them. It’s actually somewhat hard to reach New Home with a LOVE of exactly 4, due to how much Exp. monsters in later areas give out, so the most likely way would be if a player level grinded in the Ruins and, not knowing about the Genocide Route, was horrified upon first hearing the “And nobody came” message and resolved to spare everyone else. As for LV 5 through 9, a player will be towards the higher end of that range if they just play through like a normal RPG and kill all their RandomEncounters but don’t go out of their way to grind. Undyne alone will put them at LV 7 or 8, and since sparing her is a GuideDangIt, and she is the first monster to actually try to kill the player, it could be considered self-defense. And of course, killing a random monster outside the Ruins (doing this in the CORE gives enough Exp. to go from LV 1 to 5) is only likely to happen if one is doing it on purpose, since one would have to know how to spare by then.
** Between LV 10 and 14, Sans says that you’re failing and that you’ve probably already heard his judgment before and just want to hear them all, and at this point he’s right. Killing all the bosses won’t give you enough Exp. to reach LV 10 on their own, and even the encounters in the Ruins and Snowdin are a drop in the bucket compared to how much Exp. is required to level up at this point, so you must have been killing most of the RandomEncounters and even start to seek some out just to kill them. Though a player must have spared at least enough monsters to avoid fighting Undyne the Undying (and thus, Mettaton NEO) their excessively high body count means that they don’t value other lives and only demonstrated restraint to avoid fighting the Genocide-only bosses.
** Most players don’t know this, but it is actually possible to reach LV 15 or higher on a Neutral Route. Doing so by aborting a Genocide Run in Hotland will still have you fight Mettaton NEO and set your LOVE to 19 regardless of kill count, but just killing 40 monsters in Hotland is enough to do it even if one was a pacifist up to this point. As such, since you were either trying to go for the Genocide Route and failed, or killed a bunch of people in Hotland for no real gain, Sans says you suck at even being evil, and are certainly a horrible person regardless.
** And of course, if you actually killed ''everybody'' then Sans realizes that you cannot be reasoned with and must be stopped before you destroy everything, and since judging you would be pointless, decides to make you ''[[ThatOneBoss suffer]]''.
* As for the endings, it’s a similar idea, based on what Toby Fox thought a player who got such an ending deserved:
** If you kill no one but don’t meet the requirements for a True Pacifist ending, then you get the only Neutral ending that can be considered happy: everyone’s alive except [[DeathSeeker Asgore]] and the monsters are working on a way out without needing anyone’s soul. Of course, since Toby Fox wanted every player to fight Photoshop Flowey, he made some of the True Pacifist requirements only possible after getting at least one Neutral Ending, so this ending is only a placeholder until the player inevitably goes through the True Lab and gets the real ending. Note that Alphys can be here if the player went on her date but didn’t go to the Lab, showing that merely finishing the FetchQuest is not enough.
** If Toriel’s alive but at least one monster was killed, then things aren’t too bad, but the game really drives home how the monsters are pretty much stuck at the status quo ante. Since the most likely way the player got this ending was by being a pacifist up to befriending Undyne and then killing someone just to see what would happen, Undyne’s part of the conversation exists solely to guilt-trip them for doing such a horrible thing. This ending could also happen if a player killed monsters in the Ruins before realizing [[DeconstructionGame what kind of game this is]], and then went out of their way to avoid killing after that, so in that case there is instead an ending where Undyne is upset with you, but no one else is, since you didn’t know you were doing anything wrong and stopped when you figured it out.
** If you killed more than ten monsters, or any bosses, on the other hand, then it’s clear that you did kill at least one monster on purpose despite knowing its unnecessary. If you left all the bosses alive, then the game is shaming you for [[WhatMeasureIsAMook showing favoritism to the characters you can personally befriend and not caring about anyone else]]. Papyrus will always spare you before you can deplete his HP, so killing him cannot possibly be rationalized as self-defense. It’s still possible that someone playing blind would do it for the Exp., but at that point they’re already showing the weakness of character that would push them to do a Genocide Run later, hence they’d deserve it when Sans says they’re not welcome. As for killing Undyne, the very fact that you made it past Toriel nonlethally means you should be assuming that the same applies to all monsters, so killing Undyne means you’re too lazy to figure out a way to spare her, and don’t really deserve a happy ending. But you still aren’t nearly as bad as you could be, so Frisk and mankind are safe at least.
** If Toriel is dead, then not only did the player not even try to spare her, but it didn’t occur to them to reload their save to bring her back, if she was killed by accident. The game assumes the latter if the player does ''not'' kill Undyne since doing so is also very unintuitive, implying the player is doing it on purpose and as such, doesn’t deserve a better ending than one where the player character, and possibly humanity in general, is in danger.
** On the other hand, it is possible for a first-time player to end up killing both Toriel and Undyne just because they mistakenly think they have no choice. In that case the game doesn’t really hold it against them, though the endings where Mettaton and Papyrus are in charge are both pretty melancholy. Hey, you ''did'' kill someone.
** If a player just plays through like a normal RPG the whole way, then that entails killing all the bosses. The suckiness of this ending isn’t solely to punish the player, but just to point out the logical consequences of their actions, and hopefully get them to listen to Flowey’s recommendation not to kill anyone next time.
** Aborting a Genocide Run in Hotland is only likely to happen if the player is aware of the consequences of completing the run, so Alphys [[TheReasonYouSuckSpeech tells you exactly what kind of a horrible person you are]].
** The ending where the Annoying Dog becomes king, everyone is happy, and ''Sans doesn’t even care that you killed his brother'' is the anomaly here, since the requirements are such that nobody would ever get it by accident, due to Papyrus always offering the player mercy. But the ending is a joke anyway. It was likely done just because the ''other'' bosses could plausibly be killed by a first-timer who thinks they have no choice, and to get this ending one would need to deliberately avoid killing any normal civilians, who are all innocent in this, showing that the player can distinguish right from wrong.

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* The only Neutral endings in which Alphys appears are the very worst Neutral ending where you fail a Genocide Run (abort a Genocide Run in Hotland) and the very best Neutral ending where you fail a True Pacifist Run (kill no one, deliver Undyne’s letter, but don’t go to the True Lab).
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** Sans is a Pundead.
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** This brings YourSoulIsMine to a whole new physical level.
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* The track "Respite" at the end of the Pacifist Run seems like a sweet, calming, happy song at first; however, the word "respite" means "a short period of rest or relief from something difficult or unpleasant. So why would the end of an era of suffering for monsters be just a brief moment before utter despair? Because Toby knows that you are going to go reset the game and slaughter everyone. The actual track even has static crackling in the background, reminding the player that this is all just a fabrication to them, just a fleeting moment of joy and satisfaction before the player destroys everything. No matter what happens, these characters will always be at the mercy of the player, and most of them don't even realize it.

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* The track "Respite" at the end of the Pacifist Run seems like a sweet, calming, happy song at first; however, the word "respite" means "a short period of rest or relief from something difficult or unpleasant. So why would the end of an era of suffering for monsters be just a brief moment before utter despair? Because Toby knows that you are going to go reset the game and slaughter everyone. The actual track even has static crackling in the background, reminding the player that this is all just a fabrication to them, just a fleeting moment of joy and satisfaction before the player destroys they destroy everything. No matter what happens, the fate of these characters will always be at in the mercy hands of the player, and most of them don't even realize it.
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* The track "Respite" at the end of the Pacifist Run seems like a sweet, calming, happy song at first; however, the word "respite" means "a short period of rest or relief from something difficult or unpleasant. So why would the end of an era of suffering for monsters be just a brief moment before utter despair? Because Toby knows that you are going to go reset the game and slaughter everyone. The actual track even has static crackling in the background, reminding the player that this is all just a fabrication to them, just a fleeting moment of joy and satisfaction before the player destroys everything. No matter what happens, these characters will always be at the mercy of the player, and most of them don't even realize it.
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* Toriel asks you to fight here to "prove" that you can survive in the underground. But, despite how much damage you inflict on her, she never surrenders, never admits that you're strong enough. So, either she's trying to stop you at all costs even if it'll kill her... or [[SuicideByCop she actively wants you to kill her because she can't take it anymore]].
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* If you run from Undyne, she eventually collapses in Hotland due to the hot temperature heating up her armor and overheating her. If you leave Undyne rather than sparing her by giving her water from the tank just a few feet away, she dies of heat exhaustion. Assuming you spared Papyrus earlier, Sans will be sleeping at his sentry station just a short distance away from where this happens, and you even run right past him while being chased by Undyne. Imagine his reaction when he wakes up and sees that Undyne died almost right in front of him while he was sleeping, with the means to save her being in plain view.
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* Undyne seems baffled as to how Sans keeps getting hired to run different sentry stations, but it makes perfect sense why Asgore would want Sans working for him. Sans can be incredibly capable when necessary, but he's too lazy to take his job hunting humans seriously otherwise. This attitude makes it take that much longer for another human to be captured and killed, which Asgore really wants to put off as long as possible.
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Don't have to make the whole sentence a Pothole, it's an eyesore if it's an All Blue Entry.


* The fact that the player character develops a separate, homicidal personality is actually even more of Undertale's meta-commentary on games in general. Certain stereotypes aside, it's likely a player who encounters the Fallen Child isn't actually a killer in real life, or even wants to be; they only are killing everyone in-game just to see how deep the rabbit hole goes, or are probably just fanatical at LevelGrinding. To them, the character they're controlling is a ''different person''. [[LiteralGenie So, that's what the game gives you; a]] VillainProtagonist [[LiteralGenie completely at peace with the idea of killing every living thing in order for a player to see what happens. Chara even refers to themselves in the context of being a player character in a game, as a "demon" that is summoned when their name is called (i.e., when you name them at the beginning of any game) and claiming "Time after time, I will appear. And, with your help. We will eradicate the enemy and become strong. HP. ATK. DEF. GOLD. EXP. LV. Every time a number increases, that feeling... That's me."]] Hands up: Who here thinks such an [[CardCarryingVillain individual]] would [[TheStarscream react badly]] to finally being told "no?" Karma can be a tough old broad, can't she?

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* The fact that the player character develops a separate, homicidal personality is actually even more of Undertale's meta-commentary on games in general. Certain stereotypes aside, it's likely a player who encounters the Fallen Child isn't actually a killer in real life, or even wants to be; they only are killing everyone in-game just to see how deep the rabbit hole goes, or are probably just fanatical at LevelGrinding. To them, the character they're controlling is a ''different person''. [[LiteralGenie So, that's what the game [[LiteralGenie gives you; a]] you]]; a VillainProtagonist [[LiteralGenie completely at peace with the idea of killing every living thing in order for a player to see what happens. Chara even refers to themselves in the context of being a player character in a game, as a "demon" that is summoned when their name is called (i.e., when you name them at the beginning of any game) and claiming "Time after time, I will appear. And, with your help. We will eradicate the enemy and become strong. HP. ATK. DEF. GOLD. EXP. LV. Every time a number increases, that feeling... That's me."]] " Hands up: Who up; who here thinks such an [[CardCarryingVillain individual]] would [[TheStarscream react badly]] to finally being told "no?" Karma can be a tough old broad, can't she?
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* When you abort a Genocide run, Flowey is annoyed that "Chara" quit after getting so close to succeeding, but decides they must want to try everything else out first and tells them he'll be waiting when they're done messing around. People have pointed out that he still says this even if you reset at the screen to ''kill him'' in the Genocide run — after he (rightfully) got scared that Chara would kill him, betrayed them by running off to Asgore, and broke down into tears with Chara advancing on them to kill. Why on earth would he react to the reset with such nonchalance when he was so scared of Chara? Well, we know Chara used to make creepy faces for Asriel's entertainment, and we know that Asriel ''adored'' Chara and has a huge blindspot for them even as the soulless Flowey. From Flowey's perspective, Chara made a creepy face at him, but crucially ''never actually attacked him;'' so when they reset without actually attacking or killing him, all he could assume is that that's all it was — oh, it was just Chara making a face to scare him like they used to, golly, it's embarrassing that he still falls for it. Now that he thinks Chara isn't really out to kill him, he's exasperated that they pulled a joke like that, but he accepts it as their type of humor. No, most people wouldn't react to Chara the same after that; but both Flowey and Chara are sadistic soulless killers at this point, so ''Flowey'' would think that it's not a big deal.

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* When you abort a Genocide run, Flowey is annoyed that "Chara" quit after getting so close to succeeding, but decides they must want to try everything else out first and tells them he'll be waiting when they're done messing around. People have pointed out that he still says this even if you reset at the screen to where you can ''kill him'' in the Genocide run — after he (rightfully) got scared that Chara would kill him, betrayed them by running off to Asgore, and broke down into tears with Chara advancing on them to kill. Why on earth would he react to the reset with such nonchalance when he was so obviously scared of Chara? Well, we know Chara used to make creepy faces for Asriel's entertainment, and we know that Asriel ''adored'' Chara and has a huge blindspot for them even as the soulless Flowey. From Flowey's perspective, Chara made a creepy face at him, but crucially ''never actually attacked him;'' so when they reset without actually attacking or killing him, all he could assume is that that's all it was — oh, it was just Chara making a face to scare him like they used to, golly, it's so embarrassing that he still falls for it. Now that he thinks Chara isn't really out to kill him, he's exasperated that they pulled a joke like that, that at such a critical point, but he accepts it as their type of humor. No, most people wouldn't react to Chara the same after that; but both Flowey and Chara are sadistic soulless killers at this point, so ''Flowey'' would think that it's not a big deal.



* During Undyne's friendship "date" she tells the tale of how she became the head of the Royal Guard. As a kid Undyne tried to fight Asgore, who both dodged ever attack of hers and utterly refused to fight back. Which is exactly what the player must do not just with Undyne but everyone up to that point in order to befriend Undyne and hear that story to begin with. You have to emulate her idol to gain Undyne's friendship and stick with it throughout the game order to keep it.

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* During Undyne's friendship "date" she tells the tale of how she became the head of the Royal Guard. As a kid Undyne tried to fight Asgore, who both dodged ever every attack of hers and utterly refused to fight back. Which is exactly what the player must do do, not just with Undyne Undyne, but everyone up to that point in order to befriend Undyne and hear that story to begin with. You have to emulate her idol to gain Undyne's friendship and stick with it what she admires about Asgore throughout the game order to keep it.
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* At the end of a post Genocide True Pacifist run, Chara has everything they could want. They are out of the barrier at last, in full control of Frisk's body and SOUL, in the perfect position to slaughter all of the monsters without any of them knowing it's coming, and can finally go out and ravage the world as they please. However, Chara will still let you Reset the game and makes no attempt to stop you despite the fact that they have no reason to allow it and every reason to want to prevent it. This is because they can't stop you. Even before we get into save file manipulation you can reset everything, True Pacifist, Pacifist, Genocide whenever you want to and Chara can't do a thing about it. Ultimately, for all their fourth wall breaking, Chara is just another NPC like the rest, completely a slave to the whims of the player.
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* Why does Sans sleep a lot? The kid at Snowed Inn mentions that sleeping raised your HP above max. Since Sans's max HP is only one, one hit would normally kill him. By sleeping a lot, he decreases his chance of dying even accidentally.

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