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Players can feel however they want. If it\'s not a characterization of the player the game brings up, it\'s not worth listing. It never brings that one up because that plan MAKE NO SENSE as that\'s explicitly not how the afterlife in this game works.
Deleted line(s) 70 (click to see context) :
* DespairEventHorizon: Any player who becomes too attached to Asriel, will eventually consider a No Mercy run, due the fact you cannot save him from his grim destiny. By killing anyone, everyone will end up in the afterlife. Considering that you can trade your soul to the Fallen Child for the world to be restored, is especially jarring to any player, which rather wish to give up their own soul to grant Asriel a true happy ending.
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* GoneHorriblyWrong: When the Fallen Child takes control over your actions, if you planned the No Mercy run out of the aforementioned Despair Event Horizont.
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* VileVillainSaccharineShow: In a game about friendship, hope, and ThePowerOfLove, The Fallen is a sociopathic OmnicidalManiac who committed suicide as a ThanatosGambit to incite a race war and has now been resurrected by pure hatred in order to commit genocide.
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Changed line(s) 73 (click to see context) from:
GoneHorriblyWrong: When the Fallen Child takes control over your actions, if you planned the No Mercy run out of the aforementioned Despair Event Horizont.
to:
* GoneHorriblyWrong: When the Fallen Child takes control over your actions, if you planned the No Mercy run out of the aforementioned Despair Event Horizont.
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You might not be the player who felt this way, but several others certainly do.
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* DespairEventHorizon: Any player who becomes too attached to Asriel, will eventually consider a No Mercy run, due the fact you cannot save him from his grim destiny. By killing anyone, everyone will end up in the afterlife. Considering that you can trade your soul to the Fallen Child for the world to be restored, is especially jarring to any player, which rather wish to give up their own soul to grant Asriel a true happy ending.
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GoneHorriblyWrong: When the Fallen Child takes control over your actions, if you planned the No Mercy run out of the aforementioned Despair Event Horizont.
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When monsters die, their essence is on whatever their body falls on. They\'re not going to a single afterlife together. And even if they were, they would all die eventually anyway.
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* BlueAndOrangeMorality: Depends on the kind of person you are. If you play trough all the routes for just the experience. Sans is the only one, close of guessing this alignment in a No Mercy run.
to:
* BlueAndOrangeMorality: Depends on the kind of person you are. If you play trough all the routes for just the experience. experience, Sans in the No Mercy route is the only one, one who comes close of guessing this alignment in a No Mercy run.to considering that's why someone would do that.
Deleted line(s) 70 (click to see context) :
* DespairEventHorizon: Any player who becomes too attached to Asriel, will eventually consider a No Mercy run, due the fact you cannot save him from his grim destiny. By killing anyone, everyone will end up in the afterlife. Considering that you can trade your soul to the Fallen Child for the world to be restored, is especially jarring to any player, which rather wish to give up their own soul to grant Asriel a true happy ending.
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* GoneHorriblyWrong: When the Fallen Child takes control over your actions, if you planned the No Mercy run out of the aforementioned Despair Event Horizont.
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Changed line(s) 77 (click to see context) from:
* LackOfEmpathy: To get the No Mercy ending, you have to be seriously detached from the characters begging you to stop. Subverted, if you personally see the killing as a means to get anyone in the afterlife, so everyone is together in he end with Asriel. Afterall the body is but a medium for the soul.
to:
* LackOfEmpathy: To get the No Mercy ending, you have to be seriously detached from the characters begging you to stop. Subverted, if you personally see the killing as a means to get anyone in the afterlife, so everyone is together in he the end with Asriel. Afterall the body is but a medium for the soul.
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* BlueAndOrangeMorality: Depends on the kind of person you are. If you play trough all the routes for just the experience. Sans is the only one, close of guessing this alignment in a No Mercy run.
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* AGodIAm: Flowey will call you out on your tries to shape destiny, especially true if you abuse it for your own amusement.
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* DespairEventHorizon: Any player who becomes too attached to Asriel, will eventually consider a No Mercy run, due the fact you cannot save him from his grim destiny. By killing anyone, everyone will end up in the afterlife. Considering that you can trade your soul to the Fallen for the world to be restored, creates a sour note to any player, which rather wished to give up their own soul to give Asriel a true happy ending.
to:
* DespairEventHorizon: Any player who becomes too attached to Asriel, will eventually consider a No Mercy run, due the fact you cannot save him from his grim destiny. By killing anyone, everyone will end up in the afterlife. Considering that you can trade your soul to the Fallen Child for the world to be restored, creates a sour note is especially jarring to any player, which rather wished wish to give up their own soul to give grant Asriel a true happy ending.
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* GoneHorribleWrong: When the Fallen takes control over your actions, if you planned the No Mercy run out of aforementioned Despair Event Horizont.
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* GoneHorribleWrong: GoneHorriblyWrong: When the Fallen Child takes control over your actions, if you planned the No Mercy run out of the aforementioned Despair Event Horizont.
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* LackOfEmpathy: To get the No Mercy ending, you have to be seriously detached from the characters begging you to stop.
to:
* LackOfEmpathy: To get the No Mercy ending, you have to be seriously detached from the characters begging you to stop. Subverted, if you personally see the killing as a means to get anyone in the afterlife, so everyone is together in he end with Asriel. Afterall the body is but a medium for the soul.
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* WellIntentionedExtremist: See Despair Event Horizont
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* WellIntentionedExtremist: See Despair Event HorizontHorizont.
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* WoobieDestroyerOfWorlds: See Despair Event Horizont
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* WoobieDestroyerOfWorlds: See Despair Event HorizontHorizont.
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* DespairEventHorizon: Any player who becomes too attached to Asriel, will eventually consider a No Mercy run, due the fact you cannot save him from his grim destiny. By killing anyone, everyone will end up in the afterlife. Considering that you can trade your soul to the Fallen for the world to be restored, creates a sour note to any player, which rather wished to give up their own soul to give Asriel a true happy ending.
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* GoneHorribleWrong: When the Fallen takes control over your actions, if you planned the No Mercy run out of aforementioned Despair Event Horizont.
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* WellIntentionedExtremist: See Despair Event Horizont
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* WoobieDestroyerOfWorlds: See Despair Event Horizont
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Changed line(s) 155 (click to see context) from:
* TheUnfought: The only villain of the game that is never really battled. Your only real encounter with them is at the end of the No Mercy route, where they ''destroy the world''.
to:
* TheUnfought: The only villain of the game that is never really battled. Your only real encounter with them is at the end of the No Mercy route, when it's already too late to do anything against them and where they ''destroy the world''.
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Changed line(s) 125 (click to see context) from:
* HumanoidAbomination: It is unclear exactly what the Fallen Child is now, but they certainly are a horrifying world-ender when we meet them face to face in the genocide ending. If the first human who fell into the Underground existed as a character in the game, it is safe to say that the Fallen Child is no longer that person, or has evolved into something much, much more powerful and frightening as a result of the player's actions in the genocide run. They claim to be 'the demon that comes when people call its name', and the literal incarnation of the desire of RPG players to kill in order to become stronger.
to:
* HumanoidAbomination: It is unclear exactly what the Fallen Child is now, was in life, but they certainly are a horrifying world-ender when we meet them face to face in the genocide ending. If the first human who fell into the Underground existed as a character in the game, it is safe to say that the Fallen Child is no longer that person, or has evolved into something much, much more powerful and frightening as a result of the player's actions in the genocide run. They claim to be 'the demon that comes when people call its name', and the literal incarnation of the desire of RPG players to kill in order to become stronger.
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* SymbioticPossession: The player controls most of Frisk's actions, but a more benevolent player acts closely to Frisk's desires anyway. And Frisk is a child, they arguably couldn't complete their quest without you even if they could use determination on their own.
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Changed line(s) 67 (click to see context) from:
* TheCorrupter: In the No Mercy route, it's your unbridled cruelty that awakens/resurrects The Fallen Child and allows them to possess Frisk. It's even hinted that your corrupting influence extends to The Fallen Child themselves, as they are far more cruel and debased in their re-incarnated form than they were in their original life (and they mention in the Genocide route ending that it was your guidance that made them this way and gave them purpose). Oh, and should you complete a No Mercy route and choose to reset the game, you sell your soul to The Fallen Child, allowing him to possess any future incarnation of Frisk at any time (and, presumably, destroy everything).
to:
* TheCorrupter: Frisk's LV is a measure of their KillingIntent, and the player is responsible if it's above the lowest level. In the No Mercy route, it's your unbridled cruelty that awakens/resurrects The Fallen Child and allows them to possess Frisk. It's even hinted that your corrupting influence extends to The Fallen Child themselves, as they are far more cruel and debased in their re-incarnated form than they were in their original life (and they mention in the Genocide route ending that it was your guidance that made them this way and gave them purpose). Oh, and should you complete a No Mercy route and choose to reset the game, you sell your soul to The Fallen Child, allowing him to possess any future incarnation of Frisk at any time (and, presumably, destroy everything).
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* InvincibleVillain: There is nothing the characters can do to stop you, aside from trying to talk you out of it or hoping you'll get bored and give up. With your Determination, every defeat is just a setback. If you want to replace their happy ending with a genocide, you can. If you want to kill the same character over and over again, you can.
to:
* InvincibleVillain: There is nothing the characters can do to stop you, aside from trying to talk you out of it or hoping you'll get bored and give up. With your Determination, every defeat is just a setback. If you want to replace their happy ending with a genocide, you can. If you want to kill the same character over and over again, you can. The only one you ''can't'' beat, without manually altering game files, is the Fallen Child after you've sold your soul to them.
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[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/pointing_finger_mg.gif]]
[[caption-width-right:350:You have the power to reset everything.]]
[[caption-width-right:350:You have the power to reset everything.]]
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Changed line(s) 148,149 (click to see context) from:
* RiddleForTheAges:
** What was the Fallen Child like before their ThanatosGambit? Did they UsedToBeASweetKid that got pushed over the edge? Or were they always an EnfantTerrible that only saw their adoptive family as stepping stones for their revenge? There's no definitive answer, and the few hints we're given could point to either extreme or anything in between, and as a result their ultimate reasons and motivations for doing what they do are also shrouded in mystery.
** What was the Fallen Child like before their ThanatosGambit? Did they UsedToBeASweetKid that got pushed over the edge? Or were they always an EnfantTerrible that only saw their adoptive family as stepping stones for their revenge? There's no definitive answer, and the few hints we're given could point to either extreme or anything in between, and as a result their ultimate reasons and motivations for doing what they do are also shrouded in mystery.
to:
* RiddleForTheAges:
**RiddleForTheAges: What was the Fallen Child like before their ThanatosGambit? Did they UsedToBeASweetKid that got pushed over the edge? Or were they always an EnfantTerrible that only saw their adoptive family as stepping stones for their revenge? There's no definitive answer, and the few hints we're given could point to either extreme or anything in between, and as a result their ultimate reasons and motivations for doing what they do are also shrouded in mystery.
**
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Changed line(s) 98 (click to see context) from:
* BloodKnight: To a literally genocidal extreme in the Genocide playthrough, the ! encounter icon will be replaced with :). To wit, after you've killed everyone, the Fallen will attempt to engage in a fight with ''nothing'', repeatedly.
to:
* BloodKnight: To a literally genocidal extreme in the Genocide playthrough, playthrough; the ! encounter icon will be replaced with :). To wit, after you've killed everyone, every random encounter in an area, the Fallen will attempt to engage in a fight with ''nothing'', repeatedly.
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Changed line(s) 95 (click to see context) from:
* AsLongAsThereIsEvil: In the no Mercy route, the Fallen Child is implied to be the negative aspect of DETERMINATION - for progression at all costs, without regard to compassion. Even with their soul long since destroyed, as long as their name is called, they will always come back.
to:
* AsLongAsThereIsEvil: In the no Mercy Genocide route, the Fallen Child is implied to be the negative aspect of DETERMINATION - for progression at all costs, without regard to compassion. Even with their soul long since destroyed, as long as their name is called, they will always come back.
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* TheBadGuyWins: If you go through with getting the No Mercy ending, the First Child wins. ''Forever''. Even on subsequent playthroughs.
* BloodKnight: To a literally genocidal extreme in the No Mercy playthrough, the ! encounter icon will be replaced with :). To wit, after you've killed everyone, the Fallen will attempt to engage in a fight with ''nothing'', repeatedly.
* BloodKnight: To a literally genocidal extreme in the No Mercy playthrough, the ! encounter icon will be replaced with :). To wit, after you've killed everyone, the Fallen will attempt to engage in a fight with ''nothing'', repeatedly.
to:
* TheBadGuyWins: If you go through with getting the No Mercy Genocide ending, the First Child wins. ''Forever''. Even on subsequent playthroughs.
* BloodKnight: To a literally genocidal extreme in theNo Mercy Genocide playthrough, the ! encounter icon will be replaced with :). To wit, after you've killed everyone, the Fallen will attempt to engage in a fight with ''nothing'', repeatedly.
* BloodKnight: To a literally genocidal extreme in the
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* HumanoidAbomination: It is unclear exactly what the Fallen Child was originally, but they certainly are a horrifying world-ender when we meet them face to face in the genocide ending. If the first human who fell into the Underground existed as a character in the game, it is safe to say that the Fallen Child is no longer that person, or has evolved into something much, much more powerful and frightening as a result of the player's actions in the genocide run. They claim to be 'the demon that comes when people call its name', and the literal incarnation of the desire of RPG players to kill in order to become stronger.
to:
* HumanoidAbomination: It is unclear exactly what the Fallen Child was originally, is now, but they certainly are a horrifying world-ender when we meet them face to face in the genocide ending. If the first human who fell into the Underground existed as a character in the game, it is safe to say that the Fallen Child is no longer that person, or has evolved into something much, much more powerful and frightening as a result of the player's actions in the genocide run. They claim to be 'the demon that comes when people call its name', and the literal incarnation of the desire of RPG players to kill in order to become stronger.
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* ManipulativeBastard: The Fallen did pressure Asriel into a plan that would ultimately involve murdering humans no matter what. It is unknown if the living Fallen loved the family or not, if they truly planned to use the souls to break the barrier, if they deliberately manipulated everyone to start a war, or if the Fallen even knew how absorbed souls would behave in the first place.
* MisanthropeSupreme: They've long since developed a hatred of their home village and planned to kill everyone in it. One interpretation of the character is that the results of their revenge plan and/or seeing the state of the monsters at humanity's hands caused it to snowball into a full-blown desire to see humanity exterminated.
* MisanthropeSupreme: They've long since developed a hatred of their home village and planned to kill everyone in it. One interpretation of the character is that the results of their revenge plan and/or seeing the state of the monsters at humanity's hands caused it to snowball into a full-blown desire to see humanity exterminated.
to:
* ManipulativeBastard: The Fallen did pressure pressured Asriel into a plan that would ultimately involve murdering humans no matter what. It is unknown if the living Fallen truly loved the family or not, if but they truly planned to use the souls to break the barrier, if they deliberately manipulated everyone to start a war, or if the Fallen even knew how absorbed souls would behave in the first place.
don't have any qualms using them either way. Or murdering them.
* MisanthropeSupreme:They've long since They developed a hatred of their home village and planned to kill everyone in it. One interpretation of the character is that the results of their revenge plan and/or seeing the state of the monsters at humanity's hands caused it to snowball into a full-blown desire to see humanity exterminated.it.
* MisanthropeSupreme:
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** In the timeframe of the game proper, there's also the question of whether the First Child started out as the world-ending HumanoidAbomination we get to know during the genocide run, or whether the player's own bloodlust twists them into an OmnicidalManiac over the course of the No Mercy run.
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It\'s made very clear that the Fallen Child is evil. You don\'t get more evil than manipulating your family for your own selfish goals, destroying the game, and offering it back at the cost of your soul. Nothing about that is ambiguous..
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* AmbiguouslyEvil: We know very little about their true nature prior to the events of the game. The question of why they hated humans - indeed, whether they had a good reason at all - is never explained, nor is their relationship to their adoptive family elaborated on (such as whether he [[UsedToBeASweetKid genuinely cared for them]] or [[ManipulativeBastard simply used them as a means to an end]]). Asriel never spills the beans on what their plan entailed, beyond The Fallen Child sacrificing themselves so the two of them could merge and enter through the barrier. There are plenty of speculations as to what The Fallen Child's original end goal was - claiming human souls to open the barrier and free the monsters (either out of altruistic loyalty to their adoptive people, a desire for revenge against the people of their hometown, or in the hopes that the war between humans and monsters would resume), using their new powers to annihilate humanity utterly, or simply destroying everything are all possibilities. In the genocide route, [[OmnicidalManiac their motives and goals are much more straightforward.]]
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Changed line(s) 46 (click to see context) from:
* LovecraftLite: Asides the fact that they won't drive you insane when you look at them, they are disqualified for full Lovecraft status by, well, being rather nice once you get to know them.
to:
* LovecraftLite: Asides the fact that While they are quite horrific to look at and possess bizarre glitch-like abilities, they won't drive you insane when you look at them, they them and are further disqualified for from full Lovecraft Lovecraftian status by, well, being rather nice once you get to know them.
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* LovecraftLite: Asides the fact that they won't drive you insane when you look at them, they are disqualified for full Lovecraft status by, well, being rather nice once you get to know them.
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* BigFriendlyDog: If you coax Endogeny over, you can pet it like the other dogs. It's described as being very affectionate in some of the quotes.
* BlobMonster: Endogeny is described as being amorphous, and is a vaguely dog-shaped that can disperse itself into floating particles.
* BlobMonster: Endogeny is described as being amorphous, and is a vaguely dog-shaped that can disperse itself into floating particles.
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* PunnyName: En'''dog'''eny.
to:
* PunnyName: En'''dog'''eny. It's comprised of the parents of the Royal Guard dogs.
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Changed line(s) 1,2 (click to see context) from:
As the name indicates, ''everyone'' on this page is a WalkingSpoiler to the point that their very existence is a major plot twist, thus this page contains '''''no spoiler-marking at all'''''.
to:
As the name indicates, ''everyone'' on this page is a WalkingSpoiler to WalkingSpoiler, even more than the point that already spoilery main characters. Even their very existence is a major plot twist, thus twist. Thus this page contains '''''no spoiler-marking at all'''''.
all'''''. You've been warned. '''[[AC:You wouldn't want a bad time, would you?]]'''
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Changed line(s) 11 (click to see context) from:
* AssholeVictim: It's implied that at least a couple of them managed to rack up a lot of EXP before they were killed, most prominently the dark blue soul.
to:
* AssholeVictim: It's implied that at least a couple of them managed to rack up a lot of EXP before they were killed, most prominently the dark blue soul.soul (whose items are described as "dangerous" and covered in dust[[note]]what monsters turn into when they die[[/note]]) and the yellow soul (who had a real gun)
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* KilledOffForReal: They fell in various points during the Underground, it's implied the farthest any of the other souls made it was Hotland.
to:
* KilledOffForReal: They fell in various points during the Underground, it's implied the farthest any of the other souls made it was Hotland.Hotland (the yellow one).
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Changed line(s) 68 (click to see context) from:
* ForTheEvulz: Why would anyone want to cause harm to others unless they had a reason? What was your reason? Oh, right. [[ForTheEvulz Boredom.]]
to:
* ForTheEvulz: Why would anyone want to cause harm to others unless they had a reason? What was your reason? Oh, right. [[ForTheEvulz Boredom.]]
Changed line(s) 70,72 (click to see context) from:
* HeelFaceTurn:
** Possibly in the True Ending. You're still in control of everything, and Flowey directly addresses you before you reload your game after clearing it -- plus, there's a strange flashback scene in the true final boss fight that further implies there's still a connection. But not only is your role not confirmed, but the option of the True Reset casts how sincere the turn actually is in doubt if there is one at all. Or if you were a Heel to begin with (should you respect Flowey's/Asriel's wish). It's very ambiguous, we're not here to cast aspersions on you.
** The game allows a player on the No Mercy path to step off it up until the Mettaton NEO fight. When Papyrus, for example, offers to Spare you, it's a genuine offer with no strings attached, and will set the game back to Neutral mode.
** Possibly in the True Ending. You're still in control of everything, and Flowey directly addresses you before you reload your game after clearing it -- plus, there's a strange flashback scene in the true final boss fight that further implies there's still a connection. But not only is your role not confirmed, but the option of the True Reset casts how sincere the turn actually is in doubt if there is one at all. Or if you were a Heel to begin with (should you respect Flowey's/Asriel's wish). It's very ambiguous, we're not here to cast aspersions on you.
** The game allows a player on the No Mercy path to step off it up until the Mettaton NEO fight. When Papyrus, for example, offers to Spare you, it's a genuine offer with no strings attached, and will set the game back to Neutral mode.
to:
* HeelFaceTurn:
** Possibly in the True Ending. You're still in control of everything, and Flowey directly addresses you before you reload your game after clearing it -- plus, there's a strange flashback scene in the true final boss fight that further implies there's still a connection. But not only is your role not confirmed, but the option of the True Reset casts how sincere the turn actually is in doubt if there is one at all. Or if you were a Heel to begin with (should you respect Flowey's/Asriel's wish). It's very ambiguous, we're not here to cast aspersions on you.
**HeelFaceTurn: The game allows a player on the No Mercy path to step off it up until the Mettaton NEO fight. When Papyrus, for example, offers to Spare you, it's a genuine offer with no strings attached, and will set the game back to Neutral mode.
** Possibly in the True Ending. You're still in control of everything, and Flowey directly addresses you before you reload your game after clearing it -- plus, there's a strange flashback scene in the true final boss fight that further implies there's still a connection. But not only is your role not confirmed, but the option of the True Reset casts how sincere the turn actually is in doubt if there is one at all. Or if you were a Heel to begin with (should you respect Flowey's/Asriel's wish). It's very ambiguous, we're not here to cast aspersions on you.
**
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Changed line(s) 208 (click to see context) from:
[[folder:Dr. W.D. Gaster]]]
to:
[[folder:Dr. W.D. Gaster]]]Gaster]]
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Changed line(s) 84 (click to see context) from:
[[folder:The First/Fallen Child/"Playername"/Chara ([[IHaveManyNames et al.]])]]
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[[folder:The First/Fallen Child/"Playername"/Chara ([[IHaveManyNames et al.]])]]Child/"Playername"/Chara]]
Changed line(s) 99 (click to see context) from:
* CanonName: The Fallen Child's name is whatever you chose at the start of the game, though the names of some characters will be denied. However, [[https://www.youtube.com/watch?v=xUZ_-bKTxZw promotional material for the game]] had the player's name set as "Chara" (as in character), which is said to be the "true name" if you input it. "Chara[=/=]Truechara" is what Frisk and Fallen's files [[DevelopmentGag are named within the game]] and what the game defaults to if the player skips the title screen through hacking.
to:
* CanonName: The Fallen Child's name is whatever you chose at the start of the game, though the names of some characters will be denied. However, [[https://www.youtube.com/watch?v=xUZ_-bKTxZw promotional Promotional material for the game]] had the player's name set as "Chara" (as in character), which is said to be the "true name" if you input it. "Chara[=/=]Truechara" is what Frisk and Fallen's files [[DevelopmentGag are named within the game]] and what the game defaults to if the player skips the title screen through hacking.
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!! Human [=SOULs=]
to:
[[folder:Human [=SOULs=]]]
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%%* HumanSacrifice: In order to break the barrier.
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!! The Amalgamates
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[[folder:The Amalgamates]]
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!! The Player
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[[folder:The Player]]
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!! The First/Fallen Child/"Playername"/Chara ([[IHaveManyNames et al.]])
to:
[[folder:The First/Fallen Child/"Playername"/Chara ([[IHaveManyNames et al.
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** Playing through two No Mercy runs causes the Fallen Child to accuse you of having a "perverted sentimentality" that they cannot fully comprehend. They even feel the need to suggest going for another ending. [[spoiler: This is a ruse. The Fallen Child wants you to go for a better ending so they can destroy humanity themselves.]]
to:
** Playing through two No Mercy runs causes the Fallen Child to accuse you of having a "perverted sentimentality" that they cannot fully comprehend. They even feel the need to suggest going for another ending. [[spoiler: This is a ruse. The Fallen Child wants you to go for a better ending so they can destroy humanity themselves.]]
Changed line(s) 159,160 (click to see context) from:
!! Asriel Dreemurr
to:
[[folder:Asriel Dreemurr]]
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!! Dr. W.D. Gaster
to:
[[folder:Dr. W.D.
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* VaguenessIsComing: Among Alphys' reports, there is the elusive Entry #17 in which Gaster talks about doing research on a ever expanding darkness. He then asks what two unknown people think about it.
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* VaguenessIsComing: Among Alphys' reports, there is the elusive Entry #17 in which Gaster talks about doing research on a ever expanding darkness. He then asks what two unknown people think about it.it.
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!! Human [=SOULs=]
[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/tumblr_nvrnlyew2u1rfnjtto1_1444080455_cover.png]]
[[caption-width-right:350:You're filled with DETERMINATION.]]
Six Humans that were killed before you.
----
* AssholeVictim: It's implied that at least a couple of them managed to rack up a lot of EXP before they were killed, most prominently the dark blue soul.
* BigDamnHeroes: After calling out to them enough, they resonate with Frisk and begin turning the fight against Flowey. And when he uses his save state powers to undo his defeat, they unite to utterly destroy him in one shot, saving Frisk from a truly unwinnable situation.
* ColourCodedForYourConvenience: Separately from your red [=SOUL=] and grey monster [=SOULs=]; they come in orange, yellow, green, teal, purple, and dark blue.
* EmpathicWeapon: Even after death, they can still feel emotion and respond to your fight against Flowey.
%%* HumanSacrifice: In order to break the barrier.
* KilledOffForReal: They fell in various points during the Underground, it's implied the farthest any of the other souls made it was Hotland.
* LivingMacGuffin: Not so much living anymore. Still semiconscious, though.
* TakeUpMySword: All of the Gear in the game, with exception to the Temmie Armor and the items in New Home were gear used by them before they died. In the battle against Flowey, it is even shown in attack phases [[http://undertale.wikia.com/wiki/List_of_Human_Souls which colored soul used which weapon]]:
** Cyan = Toy Knife and Faded Ribbon
** Orange = Tough Glove and Manly Bandanna
** Blue = Ballet Shoes and Old Tutu
** Purple = Torn Notebook and Foggy Glasses
** Green = Burnt Pan and Stained Apron
** Yellow = Empty Gun and Cowboy Hat
* ImprobableWeaponUser: Including ballerina shoes, a notebook, and a frying pan.
* RippleEffectProofMemory: Them having this is the only saving grace in the Omega Flowey fight. Even if you die and Flowey reloads, they remember that you've called to them, and they still want to help you. This contributes to them rebelling after you "defeat" Flowey and he reminds you that he can just reload back to full health.
* WhatHappenedToTheMouse: They're mentioned as missing in the Neutral and True endings, but what happened otherwise is unexplained.
!! The Amalgamates
[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/amalgamates.png]]
[[caption-width-right:350:no No NO NO NO NO NO]]
Endogeny, Lemon Bread, Reaper Bird, So Cold, and the Memoryheads. Amalgamations of monsters caused by a terrible accident.
----
* AndIMustScream: All of them (especially Lemon Bread) are at least slightly aware of their plight, but they can't do anything about it due to Alphys keeping them a secret, and they can't die by normal means.
* BodyHorror: Several "normal" monsters combined into one.
* CallBack: By the time you face them, you'll likely have faced all of their "components" earlier in the game. The method of defeating them tends to be similar.
* CameBackWrong: The result of Alphys' experiments with injecting monster souls with Determination.
* DualBoss: The Memoryheads are a ''triple'' boss, but in practice it's just one enemy, as you can't kill them and they're all Spared at the same time.
* EldritchAbomination: Some of them toe the line. Their encounters play out like video game glitches, with bizarre names and strange dialogue. The Memoryheads' ACT options are your menu buttons until you use the "CALL" command". The Reaper Bird's flavor text and dialogue is multiple overlapping lines of text. Lemon Bread's dialogue comes from 12 separate speech bubbles covering the top of the screen. The only ones that don't really get it are Endogeny, who's UglyCute, and So Cold, who's just sad.
* EyeScream: So Cold has ''Vegetoid faces'' in the place where a Snowdrake's eyes would be.
* TheGrotesque: Despite their horrific appearances, they turn out to be no more violent or evil than any other enemy you've faced throughout the game. Alphys eventually decides to quit keeping them a secret and lets them join the other monsters in the Underground, where they seem to get along peacefully enough.
* MeaningfulName: Lemon Bread is named after a type of pudding, and one of its constituent parts is Moldbygg, a gelatin monster.
* MythologyGag: In ''VideoGame/TheHalloweenHack'', another one of Toby Fox's games, an enemy called the "Amalgamate" shows up in the late-game, and has the same base idea as the Amalgamates in this game (several monster parts combined to create one new monster). However, the Amalgamates in ''Undertale'' are important to the story, rather than generic baddies.
* MoreTeethThanTheOsmondFamily: Lemon Bread, whose teeth are actually made up of pieces of a Moldbygg. Their face consists of two angry eyes and a huge mass of gelatinous teeth. Their attack also consists of lots of teeth trying to crush your SOUL.
* NoSell: They're completely unable to be killed. Fortunately, this means you can't ruin your Pacifist run by accidentally killing one.
* OurGhostsAreDifferent: They are essentially undead monsters.
* PunnyName: En'''dog'''eny.
* TheUnintelligible: The Reaper Bird begins speaking with multiple dialogues overlapping over each other. It eventually separates in to the individual components if you spare it. The Memoryheads can also speak in a horrible distorted screech that resembles a dial-up modem.
* VoluntaryShapeshifting: They disguise themselves in a variety of ways, such as being water in a sink (Memoryheads), a refrigerator (So Cold), floating particles (Endogeny), a save point (Lemon Bread), and even a text box (Reaper Bird).
* WasOnceAMan: All of them used to be ''multiple'' monsters. Monster bodies don't have the same physicality as human bodies, so their transplanted Determination caused their bodies to melt and fuse together instead of simply allowing their souls to persist after death.
* WeaksauceWeakness: Endogeny is a dog, so the Stick will instantly pacify it as it does with all other dogs. If you already used your stick, then the Hush Puppy you can get at the hotel has the same effect.
* WhatHappenedToTheMouse: The Memoryheads and Reaper Bird completely disappear from the story after you deal with them in the True Lab. This is because, unlike the other three Amalgamates, they have no connections to existing characters.
!! The Player
[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/pointing_finger_mg.gif]]
[[caption-width-right:350:You have the power to reset everything.]]
It's you.
----
* AsLongAsThereIsEvil: The fact that you exist and can restart the game at any time - erasing everyone in its memories - makes you the single most potentially evil - and unstoppable - entity in the story. The First Child even refers to themselves as the desire to kill embedded in your heart. Whether or not they win depends on if you give in or not.
* BigBad: Depends on the kind of person you are. Your actions directly influence the course of the game and beyond, and they also decide on just how much influence the Fallen Child has on Frisk by the end. Considering how many times certain characters refer to you and not Frisk, it's safe to say your choices are acknowledged within the game, making you instrumental to the plot. If you do bad things, the Fallen will be in control at the end.
%% Please don't merge BigBad and BigGood together even though they both have the same description. Otherwise, you'll be breaking rules on ExampleIndentation. Instead, please consider rewriting one of them so that they're different.
* BigGood: Depends on the kind of person you are. Your actions directly influence the course of the game and beyond, and they also decide on just how much influence the Fallen Child has on Frisk by the end. Considering how many times certain characters refer to you and not Frisk, it's safe to say your choices are acknowledged within the game, making you instrumental to the plot. If you do good, The Fallen does not possess Frisk and Frisk's true personality shines through.
* TheCorrupter: In the No Mercy route, it's your unbridled cruelty that awakens/resurrects The Fallen Child and allows them to possess Frisk. It's even hinted that your corrupting influence extends to The Fallen Child themselves, as they are far more cruel and debased in their re-incarnated form than they were in their original life (and they mention in the Genocide route ending that it was your guidance that made them this way and gave them purpose). Oh, and should you complete a No Mercy route and choose to reset the game, you sell your soul to The Fallen Child, allowing him to possess any future incarnation of Frisk at any time (and, presumably, destroy everything).
* FaceHeelTurn: Any player who gets the True Pacifist ending, resets and starts a No Mercy run pulls one. You can't even use the excuse of "alternate dimensions/timelines" - the game makes it quite clear you're snatching the characters' happy ending away from them and replacing it with [[TheBadGuyWins death, doom and despair]]. For a while you still have a chance [[HeelFaceTurn to turn back]], reset with virtually no damage and do a True Pacifist ending again. But if you go far enough, you will never be able to get a good ending again (it is usually considered that beating Sans and resetting is not too late, but entering the throne room and initiating the ending is).
* ForTheEvulz: Why would anyone want to cause harm to others unless they had a reason? What was your reason? Oh, right. [[ForTheEvulz Boredom.]]
* HeelFaceDoorSlam: Felt bad about the Fallen Child's decision to completely destroy the world? Tough. They'll kill you and destroy it no matter how you respond in the end. In fact, going that far leads to a ''permanent'' HeelFaceDoorSlam, as all Pacifist Runs are tainted from there on without cheating with the game's files.
* HeelFaceTurn:
** Possibly in the True Ending. You're still in control of everything, and Flowey directly addresses you before you reload your game after clearing it -- plus, there's a strange flashback scene in the true final boss fight that further implies there's still a connection. But not only is your role not confirmed, but the option of the True Reset casts how sincere the turn actually is in doubt if there is one at all. Or if you were a Heel to begin with (should you respect Flowey's/Asriel's wish). It's very ambiguous, we're not here to cast aspersions on you.
** The game allows a player on the No Mercy path to step off it up until the Mettaton NEO fight. When Papyrus, for example, offers to Spare you, it's a genuine offer with no strings attached, and will set the game back to Neutral mode.
* InvincibleVillain: There is nothing the characters can do to stop you, aside from trying to talk you out of it or hoping you'll get bored and give up. With your Determination, every defeat is just a setback. If you want to replace their happy ending with a genocide, you can. If you want to kill the same character over and over again, you can.
* LackOfEmpathy: To get the No Mercy ending, you have to be seriously detached from the characters begging you to stop.
* NoKillLikeOverkill: Your damage becomes ''ridiculously'' excessive in the No Mercy route.
* OmnicidalManiac: In the No Mercy run, which is discussed heavily throughout. To what extent are you willing to annihilate an entire world and its inhabitants just to [[ForTheEvulz slake your own boredom]] or [[OneHundredPercentCompletion to satisfy a completionist urge?]] Accordingly, the line between you and the Fallen Child is deliberately blurry and it can be hard to tell where you end and they begin.
* PlayerAndProtagonistIntegration:
** You start controlling Frisk as a HeroicMime, and in most playthroughs, that is all that you are. Only Flowey knows that you’re not really Frisk. On the No Mercy path, it starts becoming clearer that you are a separate entity. The distinction between you and the First Child is… vague to say the least.
** Although the First Child takes the name you give them and is a dark take on the behaviour of a [[https://en.wikipedia.org/wiki/Bartle_Test Club or Diamond]] kind of player, they clearly become their own person if you let them get their way. [[PlayingThePlayer They consider you their pawn]] and on a second No Mercy ending find it curious how you wish to recreate ''Undertale'' over and over to toy around with its people even at the expense of your soul -- a different flavor of depravity than their own.
* TalkToTheFist: On the No Mercy path, you often walk up to the major characters and one hit-kill them without a word.
* TheUnfettered: ''Undertale'' is heavy on meta commentary about how your actions can affect the game's world for the worse, what might be your reasons for pursuing bad outcomes and even how much you're willing to cheat to take what you want from the game. If the worst comes to pass, Sans accuses you of having done it all just because you could and the Fallen Child outright calls you the sort of person who thinks themselves to be above consequences and who acts on perverted feelings for the game's setting. You can prove that and assert your power over the game by erasing the extra files that record your deal with the Fallen. On the other hand, there are plenty of people out there who have resisted the temptation of doing a No Mercy run and who even hesitate in doing a True Reset after listening to Flowey's last request.
* WhatTheHellHero: Beating the game on the True Pacifist Run and restarting the game gets you this lecture from '''Flowey''' of all characters, calling you out on taking the characters' happy ending away from them because you were bored, and [[EvilerThanThou referring to you as a worse person than him]].
* YankTheDogsChain: How the aforementioned permanent HeelFaceDoorSlam manifests. Even if you do everything right and get a Pacifist Ending, in the end, the Fallen Child is revealed to still possess your soul, after which they'll possess Frisk and kill everyone again, anyway.
!! The First/Fallen Child/"Playername"/Chara ([[IHaveManyNames et al.]])
[[quoteright:100:http://static.tvtropes.org/pmwiki/pub/images/truecharaprofile.png]]
[[caption-width-right:100:Greetings.]]
It's me.
----
* AmbiguouslyEvil: We know very little about their true nature prior to the events of the game. The question of why they hated humans - indeed, whether they had a good reason at all - is never explained, nor is their relationship to their adoptive family elaborated on (such as whether he [[UsedToBeASweetKid genuinely cared for them]] or [[ManipulativeBastard simply used them as a means to an end]]). Asriel never spills the beans on what their plan entailed, beyond The Fallen Child sacrificing themselves so the two of them could merge and enter through the barrier. There are plenty of speculations as to what The Fallen Child's original end goal was - claiming human souls to open the barrier and free the monsters (either out of altruistic loyalty to their adoptive people, a desire for revenge against the people of their hometown, or in the hopes that the war between humans and monsters would resume), using their new powers to annihilate humanity utterly, or simply destroying everything are all possibilities. In the genocide route, [[OmnicidalManiac their motives and goals are much more straightforward.]]
* AmbiguousGender: Just like Frisk, the Fallen Child's gender is left ambiguous.
* AmbiguouslyHuman: Spiritually, their sheer desire for revenge on their home and their actions through Frisk in the No Mercy route cause several monsters to wonder if they're even human ''or'' monster. Physically, if the Fallen ''was'' human in their life, they stopped being one after the player embarks on the No Mercy run, becoming more of an abstract representation of powergaming and completionist tendencies.
* AsLongAsThereIsEvil: In the no Mercy route, the Fallen Child is implied to be the negative aspect of DETERMINATION - for progression at all costs, without regard to compassion. Even with their soul long since destroyed, as long as their name is called, they will always come back.
* BadassAdorable: That cute little kid with the rosy cheeks and the sweet smile can ''easily'' destroy your entire world, take your SOUL, and use your body to murder everyone you love.
* TheBadGuyWins: If you go through with getting the No Mercy ending, the First Child wins. ''Forever''. Even on subsequent playthroughs.
* BloodKnight: To a literally genocidal extreme in the No Mercy playthrough, the ! encounter icon will be replaced with :). To wit, after you've killed everyone, the Fallen will attempt to engage in a fight with ''nothing'', repeatedly.
* BlushSticker: Well, aren't those the most pinchable mass murderer cheeks?
* CameBackWrong: Downplayed, given that the Fallen Child is stated by Asriel to have never been the best person to begin with, but it becomes pretty apparent that their resurrected form in the no mercy run is something much, much worse (and the Fallen Child even states that, until "you" (the player) provided guidance to them, they weren't even sure why they were reincarnated at all or what they were supposed to be doing). Sans, and even their own adoptive father, fail to even recognize them as ''human'' by the time it's all over.
* CanonName: The Fallen Child's name is whatever you chose at the start of the game, though the names of some characters will be denied. However, [[https://www.youtube.com/watch?v=xUZ_-bKTxZw promotional material for the game]] had the player's name set as "Chara" (as in character), which is said to be the "true name" if you input it. "Chara[=/=]Truechara" is what Frisk and Fallen's files [[DevelopmentGag are named within the game]] and what the game defaults to if the player skips the title screen through hacking.
* CreepyMonotone: In the ending of a No Mercy playthrough, the Fallen Child speaks in a deadpan tone, without VoiceGrunting and in mostly short sentences.
* CruelAndUnusualDeath: Killed themselves intentionally by eating relatively-fresh buttercups. It's probably better you don't know [[https://en.wikipedia.org/wiki/Ranunculus#Toxicity what eating buttercups]] can do to your digestive system and bowels.
* DemonicPossession:
** In the No Mercy route, the Fallen gradually begins to act independently of the player's inputs, and many of the text boxes related to examining objects and people will be written in the first person rather than the second person, as the Fallen child's grip on Frisk's soul grows stronger and stronger. This culminates in them killing Asgore and Flowey without any input from the player, and ignoring your choice to not destroy the world in the No Mercy ending.
** They gradually take control of whoever summoned them, influencing them until they can claim the victim's SOUL and fully take over. Asriel is the first victim (though he resists). It is implied that the Fallen latches onto Frisk when they land on the Fallen's grave, the patch of golden flowers in the Ruins. The player's actions determine how much the Fallen's violent tendencies take hold. If you're playing the No Mercy route, this control gradually becomes so strong the Fallen starts making their own actions and observations. Namely, checking the mirror in NEW HOME in a Pacifist run states "Despite everything, it's still you." A No Mercy check says "It's me, (name)." If you sell Frisk's SOUL in the ending and reset for True Pacifist, the Fallen escapes the Underground under the guise of Frisk.
* TheDeterminator: The Fallen Child is an interesting example of this trope, as one interpretation holds that they embody the determination of completionists who care only about playing a game to death and then moving on to the next one. In order to achieve OneHundredPercentCompletion, you have to do some pretty horrible things, but that doesn't matter if you think like the Fallen. Thus, they're not just a determinator, they are "determination" itself.
* DissonantSerenity: Once the Fallen Child introduces themselves, they look the same as Frisk but with their eyes wide open and a hearty smile instead. That gentle facade will fall apart if you try to defy them, though.
* EnemyWithout: In the No Mercy ending, they break free of listening to you and start doing their own bloodthirsty thing so they can keep killing and destroying forever.
* EvenEvilHasStandards:
** Playing through two No Mercy runs causes the Fallen Child to accuse you of having a "perverted sentimentality" that they cannot fully comprehend. They even feel the need to suggest going for another ending. [[spoiler: This is a ruse. The Fallen Child wants you to go for a better ending so they can destroy humanity themselves.]]
** Even Jerry outright disgusts the Fallen Child enough that they could spare him right at the start of battle just to get rid of him.
* EvilCounterpart: TheAntiChrist to Frisk's possible MessianicArchetype. The two kids even look the same, except for the color of their clothes and Fallen's disturbingly sunny disposition.
* EvilLaugh: It happens after the EyeAwaken. It's even more horrible than Omega Flowey's!
* EvilPrince: They become royalty by adoption, which technically counts.
* EvilerThanThou: By the end of a No Mercy playthrough even ''Flowey'' is terrified of them, and is eventually reduced to begging to be spared. Should you feel remorse and refuse to destroy the world, they'll point out you don't have any say before taking care of things themself.
* EvilOnlyHasToWinOnce: No matter how many times you finish the game with a Pacifist ending, all it takes is for you to reset the game and finish it with one No Mercy end, and ''all of your runs from then on will be doomed to end with a horrible ending, no matter what you do''.
* EvilWeapon: We don't see what the Real Knife looks like in-game, [[http://www.steamcardexchange.net/index.php?gamepage-appid-391540 but look at the Steam badge for it.]] It glows blood-red!
* EyeAwaken: If you happen to clear a Pacifist run and stay with Toriel after selling your soul to the Fallen, then the last cutscene of Toriel bringing pie to Frisk ends with them standing up after she leaves, glaring at you with [[RedEyesTakeWarning red eyes]] and a huge smirk.
* TheFaceless: Has their face hidden in the intro and in Asriel's flashbacks. It's only in the No Mercy route when we see their face.
* FauxAffablyEvil: They're quite genial and even grateful towards a No Mercy player for aiding in their victory. But if the player chooses to disobey them at the very end, their [[EldritchAbomination true self]] comes out immediately.
* {{Foreshadowing}}: During No Mercy cutscenes, Frisk will sometimes walk forward despite your controls not working. The Fallen Child is assuming direct control.
* GreaterScopeVillain: The First Child is this during the Neutral and Pacifist runs due to being responsible for all of the recent problems in the Underworld. They become the BigBad if you successfully did a No Mercy playthrough.
%%* HeartbeatSoundtrack: When they speak with you in the No Mercy run.
* HelloInsertNameHere: When asked to enter a name at the beginning of the game, they are the person you are naming, rather than the character you are controlling.
* HumanoidAbomination: It is unclear exactly what the Fallen Child was originally, but they certainly are a horrifying world-ender when we meet them face to face in the genocide ending. If the first human who fell into the Underground existed as a character in the game, it is safe to say that the Fallen Child is no longer that person, or has evolved into something much, much more powerful and frightening as a result of the player's actions in the genocide run. They claim to be 'the demon that comes when people call its name', and the literal incarnation of the desire of RPG players to kill in order to become stronger.
* IdenticalStranger: The reason Flowey confuses Frisk for the Fallen Child is because they look almost identical in appearance and even fashion sense.
* IHaveManyNames: Within the game, The Fallen Child is variously referred to as the First Child, the Fallen Child, the Angel of Death, and a near-infinite amount of alternatives, as this is the only character the player names at the beginning ("Chara" being the default name in this case, called the "true name" in the naming screen). This does not help the interpretation of the Fallen's character as a demon or the incarnation of Satan.
* IllGirl: [[AmbiguousGender Or something like that.]] You learn on the Neutral path that they suddenly became very ill and died, with no explanation given; this leads to Asriel's death, Asgore's vow of revenge, and Toriel's departure. On the True Pacifist path, you find out that [[SubvertedTrope they deliberately poisoned themself]] as a ThanatosGambit.
* InterspeciesAdoption: Being adopted into Asriel's family and raised with the same care and love certainly counts.
* KilledOffForReal: Unlike Asriel, they are completely dead at the start of the game. It's only in the No Mercy run that your excessive violence awakens them from death.
* KnifeNut: The first red text you get from Fallen is them wondering where Toriel keeps her knives. [[BrickJoke At the end of the game]], the [[UrbanLegendOfZelda rumored]] Real Knife replaces the Worn Dagger as the strongest weapon in the game. ''About time.''
* {{Leitmotif}}: Slow "Anticipation" down and you get the Fallen's oppressively mechanical theme.
* ManipulativeBastard: The Fallen did pressure Asriel into a plan that would ultimately involve murdering humans no matter what. It is unknown if the living Fallen loved the family or not, if they truly planned to use the souls to break the barrier, if they deliberately manipulated everyone to start a war, or if the Fallen even knew how absorbed souls would behave in the first place.
* MisanthropeSupreme: They've long since developed a hatred of their home village and planned to kill everyone in it. One interpretation of the character is that the results of their revenge plan and/or seeing the state of the monsters at humanity's hands caused it to snowball into a full-blown desire to see humanity exterminated.
* MyDeathIsJustTheBeginning: The First Child convinced Asriel to go along with a plan to poison them, so that Asriel could absorb their soul, and the two could pass through the barrier, allowing them to take the souls of six additional humans to open the barrier. This plan fails when Asriel gets cold feet and resists the First Child's attempt to attack the humans at the village they arrive in.
* NarratorAllAlong: Possibly. When the text boxes change over to the first person to show the fallen child assuming control over Frisk's body, there's no change in the font or scrolling sound of the narration, or any other indication that the entity narrating those text boxes has changed. Some have interpreted this as the fallen child being the narrator for all of the second person text boxes in the neutral and pacifist runs as well.
* NightmareFace: In the No Mercy ending, if you refuse to erase the world, the child simply says you have no control in the matter, if at all. Their eyes then go black, and start bleeding a black ooze as they rush towards the camera to kill you.
* NoKillLikeOverkill: When the Fallen Child takes over in the No Mercy ending, its attack will fill the entire screen with 9's, crashing the game.
* OhCrap: There is ''nothing'' the Fallen Child is ''afraid'' of...but when they have to fight '''[[SNKBoss Sans]]''', they're certainly sweating a bit.
--> ''[[ThisIsGonnaSuck You feel like you're going to have a bad time.]]''
--> ''You feel your sins crawling on your back.''
* OmnicidalManiac: Toriel and Asgore thought the First Child would be the one to bring peace between monsters and humans, not realizing they were plotting murder of six humans to break the barrier (using Asriel) and wreak bloody vengeance upon their own hometown. Their revenge on humanity was denied when Asriel changed his mind, and in the genocide route, with Frisk as a host, their sole goal after the player revives them with killing intent is to slaughter ''every single person'' they meet.
* PerpetualSmiler: Once their true appearance is revealed, you see they're pretty satisfied with what you both did. This trait is what distinguishes the Fallen from Frisk's stoic expression. In fact, you can tell they're giggling to themselves whenever a random enemy appears on a No Mercy run.
* RainbowSpeak: Certain interactions in a No Mercy route will have text with blood red coloring; these are the Fallen putting in their two cents rather than Frisk's blunt observations. There are a few instances that don't use the red text, but are more obvious, such as equipping the Locket[[note]] "Right where it belongs."[[/note]] and the Real Knife[[note]] "About time."[[/note]].
* RedEyesTakeWarning: In the Soulless Pacifist version of the scene where Frisk is shown living with Toriel, the Fallen's eyes glow red as they remind you they now own Frisk's soul.
* RewardedAsATraitorDeserves: After Flowey kills his father (after trying to warn him of you), he tries to make himself seem useful so you won't kill him. He gets torn into pieces for his trouble. Try to back out your run at the last second and they'll kill '''you'''.
* RiddleForTheAges:
** What was the Fallen Child like before their ThanatosGambit? Did they UsedToBeASweetKid that got pushed over the edge? Or were they always an EnfantTerrible that only saw their adoptive family as stepping stones for their revenge? There's no definitive answer, and the few hints we're given could point to either extreme or anything in between, and as a result their ultimate reasons and motivations for doing what they do are also shrouded in mystery.
** In the timeframe of the game proper, there's also the question of whether the First Child started out as the world-ending HumanoidAbomination we get to know during the genocide run, or whether the player's own bloodlust twists them into an OmnicidalManiac over the course of the No Mercy run.
* SpeakOfTheDevil: References this concept if you complete two No Mercy runs, calling themselves "The demon that comes when it is called."
* TheStarscream: Want to back out of your own No Mercy run in the last minute? Or want to go Pacifist after you already helped them achieve their goals? The Fallen One will turn on you.
* SuperPoweredEvilSide: Yours, and possibly Frisk's. They're everything destructive and terrible you've done in a video game brought to life, and barely even exist if you don't provide them with ample LOVE.
* TalkToTheFist: Beyond what the player does through the No Mercy path, the Fallen will increasingly walk forward during conversations, engage in fights and strike enemies without any input from the player.
* ThanatosGambit: The recollection of NEW HOME's monsters would have you believe that the Fallen suddenly fell terminally ill. The truth is that the Fallen ''poisoned themselves'' and convinced Asriel into a DemonicPossession. It is unclear whether the goal really was just to get souls to break the barrier, but the Fallen ultimately ends up wanting to destroy their hometown. Their success is mixed: Asriel resists before anyone can come to harm, but ends up mortally wounded in the process, dying not long after, and eventually being reborn as Flowey. In the No Mercy run the player's actions push their resurrection into a HumanoidAbomination which eventually takes over Frisk's body.
* TrademarkFavoriteFood: Chocolate. Toriel keeps a bar of it in her fridge out of sentimentality, and if you check Asgore's fridge at the end of the game the Fallen Child grouses that he doesn't have any.
* TroublingUnchildlikeBehavior: It is largely unknown what they were like before their nightmare-inducing soulless No Mercy incarnation. However, at five to thirteen years old (like Frisk, their age is ambiguous) they were, at the very least, a misanthrope with a chip on their shoulder for the people of their hometown. They planned their own slow agonizing suicide via buttercup poisoning, convinced Asriel to assist with said suicide plan to fuse souls to pass through the barrier, and they were planning to kill at a minimum of six humans in their hometown for their souls. They also have a fixation with knives, the Worn Dagger/Real Knife being the Fallen's default weapon.
* TheUnfought: The only villain of the game that is never really battled. Your only real encounter with them is at the end of the No Mercy route, where they ''destroy the world''.
* UngratefulBastard: Toriel, Asgore and Asriel essentially gave them a new life and loving family away from their hated old village. The Fallen Human's hatred of humans was so strong it culminated in the buttercup plan and essentially broke that family apart.
* WasOnceAMan: Despite being an avatar of the player's desire for power and progress, the Fallen Child was once a regular human that ''really'' hated their home village. It's in their attempt to take revenge on them that they became what they are now.
* WhamLine: Anything the Fallen says, really. But especially the first few lines, in either white or red text, that announce the beginning of a No Mercy run.
-->"It's me, (Player name)."
-->'''"Where are the knives."'''
* WoobieDestroyerOfWorlds: Possibly, depending on interpretations of their hatred of humanity, and how they fit into the neutral and pacifist routes. Asriel notes their reason to climb Mt. Ebott (where people disappear never to return) wasn't very happy.
* WouldHurtAChild: The opening lines to their "fight" with the Monster Child in the genocide route is "In my way." And if you examine the enemy, the description is "Looks like free EXP." Fortunately, Undyne intervenes.
!! Asriel Dreemurr
[[quoteright:100:http://static.tvtropes.org/pmwiki/pub/images/asriel6.png]]
[[caption-width-right:100:It's me, your best friend.]]
[[quoteright:121:[[labelnote:Click here to see his powered-up form.]]http://static.tvtropes.org/pmwiki/pub/images/asriel2.png[[/labelnote]]]]
Crown Prince of the Underground and dearest friend to the First Child.
----
* AbnormalLimbRotationRange: When using his sword attack, he rotates his head 360 degrees.
* {{Animesque}}: In the final battle, he crosses the BishonenLine, calls his attacks, and the attacks themselves are visually stunning and look like complete overkill. It's actually a kind of sad twist on this trope by reminding you that under that almost demonic looking exterior, he's just an eight-year old fighting like how he would have seen in a cartoon or read in a comic.
* TheAntiNihilist: In contrast to Flowey, once redeemed Asriel expresses the opinion that while the world can be a dark place filled with Floweys, what should be strived for is an existence where nobody kills and nobody is killed.
* ArmCannon: One set of his attacks in the first stage of his boss fight has him morph one of his arms into a gun.
* BerserkerTears: Once you save the souls of all your closest friends from within him, he starts to break down. He'll begin to sob while ''BEGGING'' you to let him win, that you and he will be happy together, eventually bursting into a bawling scream as he fires a point-blank DeathRay at you.
* BishonenLine: His final boss form is far more powerful than the boss form he assumed as Flowey in the Neutral run, and is also much more anthropomorphic, simply being a grown up version of himself with slightly demonic features. This ends up getting played with a bit upon his second form, which is strange and mechanical-looking, but is still ''nowhere near'' the abomination Flowey became.
* BlackEyesOfEvil: In his BishonenLine form his sclera are black with narrowed white pupils, contrasting both of his parents who have standard white sclera and black pupils.
* CallingYourAttacks: During the first phase of his fight, the text box will announce which attack he'll use. The same attack types even have multiple variants with different names.
* CameBackWrong: As is said early in the game, when a monster's ashes are scattered onto their favorite thing, their essence lives on, permeates it, even without a SOUL. Unfortunately for Alphys, she had no idea the flower she'd chosen for to bring to life through Determination was carrying Asriel within it. Thus, the product was a soulless vessel carrying the will and intelligence of their crown prince and tainted by the soul of the Fallen Child, with no capacity for any kind of love: [[BigBad Flowey]].
* EvenEvilHasLovedOnes: In fact, it's the driving force behind his villainy. He simply cannot let go of the Fallen Child.
* FightingFromTheInside: Tragically, while this doesn't happen when he's Flowey, when spoken to in the True Pacifist's epilogue he states that the Fallen Child wanted to use their combined power to annihilate the humans living in their hometown. Asriel resisted, and they were mortally wounded as a result.
* HoistByHisOwnPetard: Throughout the game, especially in a Pacifist run, he repeatedly exploits the trust and compassion of the people around him in order to get all monster and human souls in one room and devour them simultaneously. When he finally does, he gains the power of a god - but also regains his own compassion, and Frisk's pacifism turns him from a sociopathic maniac to a sobbing wreck who can't bring himself to hurt people anymore. And if you do the True Reset, he points out you're even worse than he is because you're enacting the very same insane, evil plan he was trying to do after even he himself had let it go.
* IHatePastMe: In the epilogue of the True Pacifist playthrough, he expresses sincere remorse for his actions as Flowey, to the point where he asks Frisk to consider his two forms to be separate individuals should they meet again after he's reverted to being Flowey.
-->'''Asriel:''' Let's be honest. I did some weird stuff as a flower.
* IJustWantToHaveFriends: It's up for debate whether it's an overstatement or not, but the Fallen Child was the closest thing Asriel had to a friend and simply cannot let go his memories of him, to the point of projecting the Fallen onto Frisk; he just wants to see his friend again that badly. This is part of why his Flowey persona is so elated to see Fallen!Frisk at the beginning of the No Mercy route.
* ItsAllMyFault: He explains his "[[TheSocialDarwinist Kill or be Killed]]" outlook as Flowey came from him blaming himself for preventing the Fallen Child from attacking the humans, which resulted in them dying and Asriel being reborn as a flower.
* {{Leitmotif}}: "Your Best Friend" and "His Theme".
* LivingOnBorrowedTime: In the PlayableEpilogue of the True Pacifist, he's restored to his true form, but says that without a soul he'll eventually return to being Flowey.
* NamesToRunAwayFromVeryFast: Asriel looks similar to Azrael, the name of the Archangel of Death.
* OneWingedAngel: After absorbing the Fallen's SOUL, Asriel was stated to have undergone a transformation into a powerful form, which is presumably the same form he takes during the first stage of his boss fight and simply resembles an adult version of his species, similar to his parents. His second form also qualifies, as it resembles a winged, demonic version of himself.
* OnlyFriend: Chara. The entire reason he's putting you through this fight is that if the player gets their "happy ending", they'll leave, taking Chara with them.
* OurGhostsAreDifferent: Unlike the Blook family, Asriel is dead and only persists due to having been accidentally revived as Flowey. Once he collects all the [=SOULs=] in the Underground, he gains enough power to recreate himself, but chooses to restore everyone instead.
* PhysicalGod: In his Boss Monster form he not only has the power of six human [=SOULs=] but of all the other monsters the Child has encountered except Napstablook, making him even more powerful than Omega Flowey.
* {{Portmanteau}}: Asgore + Toriel = Asriel. [[BrickJoke Asgore really is bad at naming things.]]
* SignificantAnagram: His name is an anagram of "Serial Murderer", of all things.
* SuicideByCop: Unintentional, but Asriel purposely held back his power and the Fallen Child's influence when the latter went to attack his hometown. The humans merely saw a monster and decided to slay it - Asriel accepted this fate rather than let the Fallen annihilate them and kickstart another war.
* ThatManIsDead: Invokes it on ''himself'' to Frisk, claiming Flowey is so different that he's someone else.
* TimeCrash: Seeks to cause one after another using the power of the Six Human [=SOULs=] along with every Monster SOUL - locking Frisk in an eternal loop of life with him so he'll never have to let them go.
* TragicVillain: He clung desperately to the memory of the First Child, never realizing that they never loved him back at all. In fact, he was used as a little more than their pawn, and was ForcedIntoEvil as a result of their unholy influence. He has suffered more than any other character.
* TrueFinalBoss: Of the True Pacifist ending, which requires having gotten the Neutral-Pacifist ending.
* UsedToBeASweetKid: Every indication from the story is that Asriel was just as kind as his parents, if not more so. Things quickly went downhill following his [[FalseFriend "friendship"]] with the Fallen Child, the subsequent DemonicPossession, and finally his reconstruction as Flowey without a soul. The betrayal and inability to feel twisted him into something totally unrecognizable from his former self.
* VillainRespect: Being able to stay alive after being attacked by barrage after barrage of his god-like power makes him admit that Frisk really is "something special."
* {{Yandere}}: Just like his Flowey persona and for the same reasons, his desire to keep Frisk in the Underground is a platonic variant. Unlike Flowey however, he grows out of it when he finally comes to his senses.
* WoobieDestroyerOfWorlds: Much less ambiguously than the Human SOULS or the Fallen Child. The worst thing Asriel ever did was take the Fallen Child in and try to be friends with them, and the tapes in Alphys's True Lab indicate that even though he wanted to help the Fallen complete their plan out of platonic love for them, he still had his reservations about it, and furthermore he tried to stop them when it came to fruition. It's because of the Fallen Child's evil that he died, lost everyone close to him, was stripped of his emotions, and gradually turned into what he is when you fight him. So, while his omnicidal actions aren't ''justified'' per se, anything he might have been responsible for that brought him to that point was only in the best of intentions, and the greater scope of everything bad that happened wasn't really his fault so much as it was someone else abusing his good will.
!! Dr. W.D. Gaster
[[quoteright:100:http://static.tvtropes.org/pmwiki/pub/images/sfgjsf.png]]
[[caption-width-right:100:DARK DARKER YET DARKER]]
The man who speaks in hands.
----
* AndIMustScream: You can find figments of him through the world lamenting his horrible fate. The mystery man himself appears trapped in a VoidBetweenTheWorlds. If Gaster's talked to, he gets startled and fades away.
* BeyondTheImpossible: His report mentions negative photon readings, which is a physical impossibility.
* BodyHorror: One of the [=NPCs=] who speaks of him is holding a miniature of his head.
* DummiedOut: An examination of the horrors of this trope. Gaster is lost through the game's files, unable to interact with anyone and aware that life goes on without him as if he's [[RetGone never existed.]] Players can search for him, but there's no way to help and so they can only wonder WhatCouldHaveBeen if Gaster wasn't so unfortunate to be a cut character.
* TheGhost: His existence is only vaguely hinted at through the game. Dr. Gaster was the previous royal scientist before Alphys, but his experiments have gotten him shattered across the time-space continuum. His predicament is so bad that players are only learning about him [[NoFourthWall by fixing a "typo" in the game's save file]] (changing the "fun" item to "Fun" and setting it to certain values) and then trying to puzzle it out through data mining and trial and error.
* GhostlyGape: Gaster is probably a skeleton like Sans and Papyrus, but with that particular expression and the cracks on his face he ends up looking like a ghost.
* HoistByHisOwnPetard: Non-villainous version. Gaster was the one who designed and built the Core, providing the Underground with electricity. Unfortunately, an accident caused him to plummet into the Core's... core, the damage of which was so severe that it blasted him and possibly some of his colleagues across time and space.
* ItsAWonderfulPlot: For poor Dr. Gaster, this trope appears to have gone horribly wrong; one of his grey figments asks the player about the prospect of a world where everything is exactly the same except you don't exist, everything functioning perfectly without you. What's worse is that he wasn't erased from history, and yet life still went on; one might assume that nobody mourned. And it even seems to be worse than that. Other [=NPCs=] needed to be coded back into the game to get any information on him. Whatever happened was so bad it did the same to ''anyone who knew much about him.'' (except Sans who's implied to also know him).
* {{Leitmotif}}: [[https://www.youtube.com/watch?v=n0dgaYe2LZw "Gaster's Theme"]], a song that can only be heard in a secret SoundTest screen that only features a few apparently ''[[DummiedOut unused]]'' songs...
* MeaningfulName: Named after the Wingdings font, which he uses to speak and write.
* TheMissingno: His existence is an exploration of this trope, and what such a character would be like within the context of the game world itself.
* NumberOfTheBeast: There is data in the game for a possible battle encounter against Gaster. For some reason or other, his attributes are all variants of 666. 66 is also the Fun value you need to get the door to his room to appear at Waterfall.
* TheProfessor: A tall skeleton(?) with a goofy grin who speaks entirely in Wingdings. Also the most brilliant mind in all of monsterkind.
* TheUnintelligible: Like Sans and Papyrus, Gaster speaks in the font he is named after - in this case, Wingdings, which... probably aren't a "dialect" the player will understand. Fortunately, lots of translation tools exist online.
* VaguenessIsComing: Among Alphys' reports, there is the elusive Entry #17 in which Gaster talks about doing research on a ever expanding darkness. He then asks what two unknown people think about it.
[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/tumblr_nvrnlyew2u1rfnjtto1_1444080455_cover.png]]
[[caption-width-right:350:You're filled with DETERMINATION.]]
Six Humans that were killed before you.
----
* AssholeVictim: It's implied that at least a couple of them managed to rack up a lot of EXP before they were killed, most prominently the dark blue soul.
* BigDamnHeroes: After calling out to them enough, they resonate with Frisk and begin turning the fight against Flowey. And when he uses his save state powers to undo his defeat, they unite to utterly destroy him in one shot, saving Frisk from a truly unwinnable situation.
* ColourCodedForYourConvenience: Separately from your red [=SOUL=] and grey monster [=SOULs=]; they come in orange, yellow, green, teal, purple, and dark blue.
* EmpathicWeapon: Even after death, they can still feel emotion and respond to your fight against Flowey.
%%* HumanSacrifice: In order to break the barrier.
* KilledOffForReal: They fell in various points during the Underground, it's implied the farthest any of the other souls made it was Hotland.
* LivingMacGuffin: Not so much living anymore. Still semiconscious, though.
* TakeUpMySword: All of the Gear in the game, with exception to the Temmie Armor and the items in New Home were gear used by them before they died. In the battle against Flowey, it is even shown in attack phases [[http://undertale.wikia.com/wiki/List_of_Human_Souls which colored soul used which weapon]]:
** Cyan = Toy Knife and Faded Ribbon
** Orange = Tough Glove and Manly Bandanna
** Blue = Ballet Shoes and Old Tutu
** Purple = Torn Notebook and Foggy Glasses
** Green = Burnt Pan and Stained Apron
** Yellow = Empty Gun and Cowboy Hat
* ImprobableWeaponUser: Including ballerina shoes, a notebook, and a frying pan.
* RippleEffectProofMemory: Them having this is the only saving grace in the Omega Flowey fight. Even if you die and Flowey reloads, they remember that you've called to them, and they still want to help you. This contributes to them rebelling after you "defeat" Flowey and he reminds you that he can just reload back to full health.
* WhatHappenedToTheMouse: They're mentioned as missing in the Neutral and True endings, but what happened otherwise is unexplained.
!! The Amalgamates
[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/amalgamates.png]]
[[caption-width-right:350:no No NO NO NO NO NO]]
Endogeny, Lemon Bread, Reaper Bird, So Cold, and the Memoryheads. Amalgamations of monsters caused by a terrible accident.
----
* AndIMustScream: All of them (especially Lemon Bread) are at least slightly aware of their plight, but they can't do anything about it due to Alphys keeping them a secret, and they can't die by normal means.
* BodyHorror: Several "normal" monsters combined into one.
* CallBack: By the time you face them, you'll likely have faced all of their "components" earlier in the game. The method of defeating them tends to be similar.
* CameBackWrong: The result of Alphys' experiments with injecting monster souls with Determination.
* DualBoss: The Memoryheads are a ''triple'' boss, but in practice it's just one enemy, as you can't kill them and they're all Spared at the same time.
* EldritchAbomination: Some of them toe the line. Their encounters play out like video game glitches, with bizarre names and strange dialogue. The Memoryheads' ACT options are your menu buttons until you use the "CALL" command". The Reaper Bird's flavor text and dialogue is multiple overlapping lines of text. Lemon Bread's dialogue comes from 12 separate speech bubbles covering the top of the screen. The only ones that don't really get it are Endogeny, who's UglyCute, and So Cold, who's just sad.
* EyeScream: So Cold has ''Vegetoid faces'' in the place where a Snowdrake's eyes would be.
* TheGrotesque: Despite their horrific appearances, they turn out to be no more violent or evil than any other enemy you've faced throughout the game. Alphys eventually decides to quit keeping them a secret and lets them join the other monsters in the Underground, where they seem to get along peacefully enough.
* MeaningfulName: Lemon Bread is named after a type of pudding, and one of its constituent parts is Moldbygg, a gelatin monster.
* MythologyGag: In ''VideoGame/TheHalloweenHack'', another one of Toby Fox's games, an enemy called the "Amalgamate" shows up in the late-game, and has the same base idea as the Amalgamates in this game (several monster parts combined to create one new monster). However, the Amalgamates in ''Undertale'' are important to the story, rather than generic baddies.
* MoreTeethThanTheOsmondFamily: Lemon Bread, whose teeth are actually made up of pieces of a Moldbygg. Their face consists of two angry eyes and a huge mass of gelatinous teeth. Their attack also consists of lots of teeth trying to crush your SOUL.
* NoSell: They're completely unable to be killed. Fortunately, this means you can't ruin your Pacifist run by accidentally killing one.
* OurGhostsAreDifferent: They are essentially undead monsters.
* PunnyName: En'''dog'''eny.
* TheUnintelligible: The Reaper Bird begins speaking with multiple dialogues overlapping over each other. It eventually separates in to the individual components if you spare it. The Memoryheads can also speak in a horrible distorted screech that resembles a dial-up modem.
* VoluntaryShapeshifting: They disguise themselves in a variety of ways, such as being water in a sink (Memoryheads), a refrigerator (So Cold), floating particles (Endogeny), a save point (Lemon Bread), and even a text box (Reaper Bird).
* WasOnceAMan: All of them used to be ''multiple'' monsters. Monster bodies don't have the same physicality as human bodies, so their transplanted Determination caused their bodies to melt and fuse together instead of simply allowing their souls to persist after death.
* WeaksauceWeakness: Endogeny is a dog, so the Stick will instantly pacify it as it does with all other dogs. If you already used your stick, then the Hush Puppy you can get at the hotel has the same effect.
* WhatHappenedToTheMouse: The Memoryheads and Reaper Bird completely disappear from the story after you deal with them in the True Lab. This is because, unlike the other three Amalgamates, they have no connections to existing characters.
!! The Player
[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/pointing_finger_mg.gif]]
[[caption-width-right:350:You have the power to reset everything.]]
It's you.
----
* AsLongAsThereIsEvil: The fact that you exist and can restart the game at any time - erasing everyone in its memories - makes you the single most potentially evil - and unstoppable - entity in the story. The First Child even refers to themselves as the desire to kill embedded in your heart. Whether or not they win depends on if you give in or not.
* BigBad: Depends on the kind of person you are. Your actions directly influence the course of the game and beyond, and they also decide on just how much influence the Fallen Child has on Frisk by the end. Considering how many times certain characters refer to you and not Frisk, it's safe to say your choices are acknowledged within the game, making you instrumental to the plot. If you do bad things, the Fallen will be in control at the end.
%% Please don't merge BigBad and BigGood together even though they both have the same description. Otherwise, you'll be breaking rules on ExampleIndentation. Instead, please consider rewriting one of them so that they're different.
* BigGood: Depends on the kind of person you are. Your actions directly influence the course of the game and beyond, and they also decide on just how much influence the Fallen Child has on Frisk by the end. Considering how many times certain characters refer to you and not Frisk, it's safe to say your choices are acknowledged within the game, making you instrumental to the plot. If you do good, The Fallen does not possess Frisk and Frisk's true personality shines through.
* TheCorrupter: In the No Mercy route, it's your unbridled cruelty that awakens/resurrects The Fallen Child and allows them to possess Frisk. It's even hinted that your corrupting influence extends to The Fallen Child themselves, as they are far more cruel and debased in their re-incarnated form than they were in their original life (and they mention in the Genocide route ending that it was your guidance that made them this way and gave them purpose). Oh, and should you complete a No Mercy route and choose to reset the game, you sell your soul to The Fallen Child, allowing him to possess any future incarnation of Frisk at any time (and, presumably, destroy everything).
* FaceHeelTurn: Any player who gets the True Pacifist ending, resets and starts a No Mercy run pulls one. You can't even use the excuse of "alternate dimensions/timelines" - the game makes it quite clear you're snatching the characters' happy ending away from them and replacing it with [[TheBadGuyWins death, doom and despair]]. For a while you still have a chance [[HeelFaceTurn to turn back]], reset with virtually no damage and do a True Pacifist ending again. But if you go far enough, you will never be able to get a good ending again (it is usually considered that beating Sans and resetting is not too late, but entering the throne room and initiating the ending is).
* ForTheEvulz: Why would anyone want to cause harm to others unless they had a reason? What was your reason? Oh, right. [[ForTheEvulz Boredom.]]
* HeelFaceDoorSlam: Felt bad about the Fallen Child's decision to completely destroy the world? Tough. They'll kill you and destroy it no matter how you respond in the end. In fact, going that far leads to a ''permanent'' HeelFaceDoorSlam, as all Pacifist Runs are tainted from there on without cheating with the game's files.
* HeelFaceTurn:
** Possibly in the True Ending. You're still in control of everything, and Flowey directly addresses you before you reload your game after clearing it -- plus, there's a strange flashback scene in the true final boss fight that further implies there's still a connection. But not only is your role not confirmed, but the option of the True Reset casts how sincere the turn actually is in doubt if there is one at all. Or if you were a Heel to begin with (should you respect Flowey's/Asriel's wish). It's very ambiguous, we're not here to cast aspersions on you.
** The game allows a player on the No Mercy path to step off it up until the Mettaton NEO fight. When Papyrus, for example, offers to Spare you, it's a genuine offer with no strings attached, and will set the game back to Neutral mode.
* InvincibleVillain: There is nothing the characters can do to stop you, aside from trying to talk you out of it or hoping you'll get bored and give up. With your Determination, every defeat is just a setback. If you want to replace their happy ending with a genocide, you can. If you want to kill the same character over and over again, you can.
* LackOfEmpathy: To get the No Mercy ending, you have to be seriously detached from the characters begging you to stop.
* NoKillLikeOverkill: Your damage becomes ''ridiculously'' excessive in the No Mercy route.
* OmnicidalManiac: In the No Mercy run, which is discussed heavily throughout. To what extent are you willing to annihilate an entire world and its inhabitants just to [[ForTheEvulz slake your own boredom]] or [[OneHundredPercentCompletion to satisfy a completionist urge?]] Accordingly, the line between you and the Fallen Child is deliberately blurry and it can be hard to tell where you end and they begin.
* PlayerAndProtagonistIntegration:
** You start controlling Frisk as a HeroicMime, and in most playthroughs, that is all that you are. Only Flowey knows that you’re not really Frisk. On the No Mercy path, it starts becoming clearer that you are a separate entity. The distinction between you and the First Child is… vague to say the least.
** Although the First Child takes the name you give them and is a dark take on the behaviour of a [[https://en.wikipedia.org/wiki/Bartle_Test Club or Diamond]] kind of player, they clearly become their own person if you let them get their way. [[PlayingThePlayer They consider you their pawn]] and on a second No Mercy ending find it curious how you wish to recreate ''Undertale'' over and over to toy around with its people even at the expense of your soul -- a different flavor of depravity than their own.
* TalkToTheFist: On the No Mercy path, you often walk up to the major characters and one hit-kill them without a word.
* TheUnfettered: ''Undertale'' is heavy on meta commentary about how your actions can affect the game's world for the worse, what might be your reasons for pursuing bad outcomes and even how much you're willing to cheat to take what you want from the game. If the worst comes to pass, Sans accuses you of having done it all just because you could and the Fallen Child outright calls you the sort of person who thinks themselves to be above consequences and who acts on perverted feelings for the game's setting. You can prove that and assert your power over the game by erasing the extra files that record your deal with the Fallen. On the other hand, there are plenty of people out there who have resisted the temptation of doing a No Mercy run and who even hesitate in doing a True Reset after listening to Flowey's last request.
* WhatTheHellHero: Beating the game on the True Pacifist Run and restarting the game gets you this lecture from '''Flowey''' of all characters, calling you out on taking the characters' happy ending away from them because you were bored, and [[EvilerThanThou referring to you as a worse person than him]].
* YankTheDogsChain: How the aforementioned permanent HeelFaceDoorSlam manifests. Even if you do everything right and get a Pacifist Ending, in the end, the Fallen Child is revealed to still possess your soul, after which they'll possess Frisk and kill everyone again, anyway.
!! The First/Fallen Child/"Playername"/Chara ([[IHaveManyNames et al.]])
[[quoteright:100:http://static.tvtropes.org/pmwiki/pub/images/truecharaprofile.png]]
[[caption-width-right:100:Greetings.]]
It's me.
----
* AmbiguouslyEvil: We know very little about their true nature prior to the events of the game. The question of why they hated humans - indeed, whether they had a good reason at all - is never explained, nor is their relationship to their adoptive family elaborated on (such as whether he [[UsedToBeASweetKid genuinely cared for them]] or [[ManipulativeBastard simply used them as a means to an end]]). Asriel never spills the beans on what their plan entailed, beyond The Fallen Child sacrificing themselves so the two of them could merge and enter through the barrier. There are plenty of speculations as to what The Fallen Child's original end goal was - claiming human souls to open the barrier and free the monsters (either out of altruistic loyalty to their adoptive people, a desire for revenge against the people of their hometown, or in the hopes that the war between humans and monsters would resume), using their new powers to annihilate humanity utterly, or simply destroying everything are all possibilities. In the genocide route, [[OmnicidalManiac their motives and goals are much more straightforward.]]
* AmbiguousGender: Just like Frisk, the Fallen Child's gender is left ambiguous.
* AmbiguouslyHuman: Spiritually, their sheer desire for revenge on their home and their actions through Frisk in the No Mercy route cause several monsters to wonder if they're even human ''or'' monster. Physically, if the Fallen ''was'' human in their life, they stopped being one after the player embarks on the No Mercy run, becoming more of an abstract representation of powergaming and completionist tendencies.
* AsLongAsThereIsEvil: In the no Mercy route, the Fallen Child is implied to be the negative aspect of DETERMINATION - for progression at all costs, without regard to compassion. Even with their soul long since destroyed, as long as their name is called, they will always come back.
* BadassAdorable: That cute little kid with the rosy cheeks and the sweet smile can ''easily'' destroy your entire world, take your SOUL, and use your body to murder everyone you love.
* TheBadGuyWins: If you go through with getting the No Mercy ending, the First Child wins. ''Forever''. Even on subsequent playthroughs.
* BloodKnight: To a literally genocidal extreme in the No Mercy playthrough, the ! encounter icon will be replaced with :). To wit, after you've killed everyone, the Fallen will attempt to engage in a fight with ''nothing'', repeatedly.
* BlushSticker: Well, aren't those the most pinchable mass murderer cheeks?
* CameBackWrong: Downplayed, given that the Fallen Child is stated by Asriel to have never been the best person to begin with, but it becomes pretty apparent that their resurrected form in the no mercy run is something much, much worse (and the Fallen Child even states that, until "you" (the player) provided guidance to them, they weren't even sure why they were reincarnated at all or what they were supposed to be doing). Sans, and even their own adoptive father, fail to even recognize them as ''human'' by the time it's all over.
* CanonName: The Fallen Child's name is whatever you chose at the start of the game, though the names of some characters will be denied. However, [[https://www.youtube.com/watch?v=xUZ_-bKTxZw promotional material for the game]] had the player's name set as "Chara" (as in character), which is said to be the "true name" if you input it. "Chara[=/=]Truechara" is what Frisk and Fallen's files [[DevelopmentGag are named within the game]] and what the game defaults to if the player skips the title screen through hacking.
* CreepyMonotone: In the ending of a No Mercy playthrough, the Fallen Child speaks in a deadpan tone, without VoiceGrunting and in mostly short sentences.
* CruelAndUnusualDeath: Killed themselves intentionally by eating relatively-fresh buttercups. It's probably better you don't know [[https://en.wikipedia.org/wiki/Ranunculus#Toxicity what eating buttercups]] can do to your digestive system and bowels.
* DemonicPossession:
** In the No Mercy route, the Fallen gradually begins to act independently of the player's inputs, and many of the text boxes related to examining objects and people will be written in the first person rather than the second person, as the Fallen child's grip on Frisk's soul grows stronger and stronger. This culminates in them killing Asgore and Flowey without any input from the player, and ignoring your choice to not destroy the world in the No Mercy ending.
** They gradually take control of whoever summoned them, influencing them until they can claim the victim's SOUL and fully take over. Asriel is the first victim (though he resists). It is implied that the Fallen latches onto Frisk when they land on the Fallen's grave, the patch of golden flowers in the Ruins. The player's actions determine how much the Fallen's violent tendencies take hold. If you're playing the No Mercy route, this control gradually becomes so strong the Fallen starts making their own actions and observations. Namely, checking the mirror in NEW HOME in a Pacifist run states "Despite everything, it's still you." A No Mercy check says "It's me, (name)." If you sell Frisk's SOUL in the ending and reset for True Pacifist, the Fallen escapes the Underground under the guise of Frisk.
* TheDeterminator: The Fallen Child is an interesting example of this trope, as one interpretation holds that they embody the determination of completionists who care only about playing a game to death and then moving on to the next one. In order to achieve OneHundredPercentCompletion, you have to do some pretty horrible things, but that doesn't matter if you think like the Fallen. Thus, they're not just a determinator, they are "determination" itself.
* DissonantSerenity: Once the Fallen Child introduces themselves, they look the same as Frisk but with their eyes wide open and a hearty smile instead. That gentle facade will fall apart if you try to defy them, though.
* EnemyWithout: In the No Mercy ending, they break free of listening to you and start doing their own bloodthirsty thing so they can keep killing and destroying forever.
* EvenEvilHasStandards:
** Playing through two No Mercy runs causes the Fallen Child to accuse you of having a "perverted sentimentality" that they cannot fully comprehend. They even feel the need to suggest going for another ending. [[spoiler: This is a ruse. The Fallen Child wants you to go for a better ending so they can destroy humanity themselves.]]
** Even Jerry outright disgusts the Fallen Child enough that they could spare him right at the start of battle just to get rid of him.
* EvilCounterpart: TheAntiChrist to Frisk's possible MessianicArchetype. The two kids even look the same, except for the color of their clothes and Fallen's disturbingly sunny disposition.
* EvilLaugh: It happens after the EyeAwaken. It's even more horrible than Omega Flowey's!
* EvilPrince: They become royalty by adoption, which technically counts.
* EvilerThanThou: By the end of a No Mercy playthrough even ''Flowey'' is terrified of them, and is eventually reduced to begging to be spared. Should you feel remorse and refuse to destroy the world, they'll point out you don't have any say before taking care of things themself.
* EvilOnlyHasToWinOnce: No matter how many times you finish the game with a Pacifist ending, all it takes is for you to reset the game and finish it with one No Mercy end, and ''all of your runs from then on will be doomed to end with a horrible ending, no matter what you do''.
* EvilWeapon: We don't see what the Real Knife looks like in-game, [[http://www.steamcardexchange.net/index.php?gamepage-appid-391540 but look at the Steam badge for it.]] It glows blood-red!
* EyeAwaken: If you happen to clear a Pacifist run and stay with Toriel after selling your soul to the Fallen, then the last cutscene of Toriel bringing pie to Frisk ends with them standing up after she leaves, glaring at you with [[RedEyesTakeWarning red eyes]] and a huge smirk.
* TheFaceless: Has their face hidden in the intro and in Asriel's flashbacks. It's only in the No Mercy route when we see their face.
* FauxAffablyEvil: They're quite genial and even grateful towards a No Mercy player for aiding in their victory. But if the player chooses to disobey them at the very end, their [[EldritchAbomination true self]] comes out immediately.
* {{Foreshadowing}}: During No Mercy cutscenes, Frisk will sometimes walk forward despite your controls not working. The Fallen Child is assuming direct control.
* GreaterScopeVillain: The First Child is this during the Neutral and Pacifist runs due to being responsible for all of the recent problems in the Underworld. They become the BigBad if you successfully did a No Mercy playthrough.
%%* HeartbeatSoundtrack: When they speak with you in the No Mercy run.
* HelloInsertNameHere: When asked to enter a name at the beginning of the game, they are the person you are naming, rather than the character you are controlling.
* HumanoidAbomination: It is unclear exactly what the Fallen Child was originally, but they certainly are a horrifying world-ender when we meet them face to face in the genocide ending. If the first human who fell into the Underground existed as a character in the game, it is safe to say that the Fallen Child is no longer that person, or has evolved into something much, much more powerful and frightening as a result of the player's actions in the genocide run. They claim to be 'the demon that comes when people call its name', and the literal incarnation of the desire of RPG players to kill in order to become stronger.
* IdenticalStranger: The reason Flowey confuses Frisk for the Fallen Child is because they look almost identical in appearance and even fashion sense.
* IHaveManyNames: Within the game, The Fallen Child is variously referred to as the First Child, the Fallen Child, the Angel of Death, and a near-infinite amount of alternatives, as this is the only character the player names at the beginning ("Chara" being the default name in this case, called the "true name" in the naming screen). This does not help the interpretation of the Fallen's character as a demon or the incarnation of Satan.
* IllGirl: [[AmbiguousGender Or something like that.]] You learn on the Neutral path that they suddenly became very ill and died, with no explanation given; this leads to Asriel's death, Asgore's vow of revenge, and Toriel's departure. On the True Pacifist path, you find out that [[SubvertedTrope they deliberately poisoned themself]] as a ThanatosGambit.
* InterspeciesAdoption: Being adopted into Asriel's family and raised with the same care and love certainly counts.
* KilledOffForReal: Unlike Asriel, they are completely dead at the start of the game. It's only in the No Mercy run that your excessive violence awakens them from death.
* KnifeNut: The first red text you get from Fallen is them wondering where Toriel keeps her knives. [[BrickJoke At the end of the game]], the [[UrbanLegendOfZelda rumored]] Real Knife replaces the Worn Dagger as the strongest weapon in the game. ''About time.''
* {{Leitmotif}}: Slow "Anticipation" down and you get the Fallen's oppressively mechanical theme.
* ManipulativeBastard: The Fallen did pressure Asriel into a plan that would ultimately involve murdering humans no matter what. It is unknown if the living Fallen loved the family or not, if they truly planned to use the souls to break the barrier, if they deliberately manipulated everyone to start a war, or if the Fallen even knew how absorbed souls would behave in the first place.
* MisanthropeSupreme: They've long since developed a hatred of their home village and planned to kill everyone in it. One interpretation of the character is that the results of their revenge plan and/or seeing the state of the monsters at humanity's hands caused it to snowball into a full-blown desire to see humanity exterminated.
* MyDeathIsJustTheBeginning: The First Child convinced Asriel to go along with a plan to poison them, so that Asriel could absorb their soul, and the two could pass through the barrier, allowing them to take the souls of six additional humans to open the barrier. This plan fails when Asriel gets cold feet and resists the First Child's attempt to attack the humans at the village they arrive in.
* NarratorAllAlong: Possibly. When the text boxes change over to the first person to show the fallen child assuming control over Frisk's body, there's no change in the font or scrolling sound of the narration, or any other indication that the entity narrating those text boxes has changed. Some have interpreted this as the fallen child being the narrator for all of the second person text boxes in the neutral and pacifist runs as well.
* NightmareFace: In the No Mercy ending, if you refuse to erase the world, the child simply says you have no control in the matter, if at all. Their eyes then go black, and start bleeding a black ooze as they rush towards the camera to kill you.
* NoKillLikeOverkill: When the Fallen Child takes over in the No Mercy ending, its attack will fill the entire screen with 9's, crashing the game.
* OhCrap: There is ''nothing'' the Fallen Child is ''afraid'' of...but when they have to fight '''[[SNKBoss Sans]]''', they're certainly sweating a bit.
--> ''[[ThisIsGonnaSuck You feel like you're going to have a bad time.]]''
--> ''You feel your sins crawling on your back.''
* OmnicidalManiac: Toriel and Asgore thought the First Child would be the one to bring peace between monsters and humans, not realizing they were plotting murder of six humans to break the barrier (using Asriel) and wreak bloody vengeance upon their own hometown. Their revenge on humanity was denied when Asriel changed his mind, and in the genocide route, with Frisk as a host, their sole goal after the player revives them with killing intent is to slaughter ''every single person'' they meet.
* PerpetualSmiler: Once their true appearance is revealed, you see they're pretty satisfied with what you both did. This trait is what distinguishes the Fallen from Frisk's stoic expression. In fact, you can tell they're giggling to themselves whenever a random enemy appears on a No Mercy run.
* RainbowSpeak: Certain interactions in a No Mercy route will have text with blood red coloring; these are the Fallen putting in their two cents rather than Frisk's blunt observations. There are a few instances that don't use the red text, but are more obvious, such as equipping the Locket[[note]] "Right where it belongs."[[/note]] and the Real Knife[[note]] "About time."[[/note]].
* RedEyesTakeWarning: In the Soulless Pacifist version of the scene where Frisk is shown living with Toriel, the Fallen's eyes glow red as they remind you they now own Frisk's soul.
* RewardedAsATraitorDeserves: After Flowey kills his father (after trying to warn him of you), he tries to make himself seem useful so you won't kill him. He gets torn into pieces for his trouble. Try to back out your run at the last second and they'll kill '''you'''.
* RiddleForTheAges:
** What was the Fallen Child like before their ThanatosGambit? Did they UsedToBeASweetKid that got pushed over the edge? Or were they always an EnfantTerrible that only saw their adoptive family as stepping stones for their revenge? There's no definitive answer, and the few hints we're given could point to either extreme or anything in between, and as a result their ultimate reasons and motivations for doing what they do are also shrouded in mystery.
** In the timeframe of the game proper, there's also the question of whether the First Child started out as the world-ending HumanoidAbomination we get to know during the genocide run, or whether the player's own bloodlust twists them into an OmnicidalManiac over the course of the No Mercy run.
* SpeakOfTheDevil: References this concept if you complete two No Mercy runs, calling themselves "The demon that comes when it is called."
* TheStarscream: Want to back out of your own No Mercy run in the last minute? Or want to go Pacifist after you already helped them achieve their goals? The Fallen One will turn on you.
* SuperPoweredEvilSide: Yours, and possibly Frisk's. They're everything destructive and terrible you've done in a video game brought to life, and barely even exist if you don't provide them with ample LOVE.
* TalkToTheFist: Beyond what the player does through the No Mercy path, the Fallen will increasingly walk forward during conversations, engage in fights and strike enemies without any input from the player.
* ThanatosGambit: The recollection of NEW HOME's monsters would have you believe that the Fallen suddenly fell terminally ill. The truth is that the Fallen ''poisoned themselves'' and convinced Asriel into a DemonicPossession. It is unclear whether the goal really was just to get souls to break the barrier, but the Fallen ultimately ends up wanting to destroy their hometown. Their success is mixed: Asriel resists before anyone can come to harm, but ends up mortally wounded in the process, dying not long after, and eventually being reborn as Flowey. In the No Mercy run the player's actions push their resurrection into a HumanoidAbomination which eventually takes over Frisk's body.
* TrademarkFavoriteFood: Chocolate. Toriel keeps a bar of it in her fridge out of sentimentality, and if you check Asgore's fridge at the end of the game the Fallen Child grouses that he doesn't have any.
* TroublingUnchildlikeBehavior: It is largely unknown what they were like before their nightmare-inducing soulless No Mercy incarnation. However, at five to thirteen years old (like Frisk, their age is ambiguous) they were, at the very least, a misanthrope with a chip on their shoulder for the people of their hometown. They planned their own slow agonizing suicide via buttercup poisoning, convinced Asriel to assist with said suicide plan to fuse souls to pass through the barrier, and they were planning to kill at a minimum of six humans in their hometown for their souls. They also have a fixation with knives, the Worn Dagger/Real Knife being the Fallen's default weapon.
* TheUnfought: The only villain of the game that is never really battled. Your only real encounter with them is at the end of the No Mercy route, where they ''destroy the world''.
* UngratefulBastard: Toriel, Asgore and Asriel essentially gave them a new life and loving family away from their hated old village. The Fallen Human's hatred of humans was so strong it culminated in the buttercup plan and essentially broke that family apart.
* WasOnceAMan: Despite being an avatar of the player's desire for power and progress, the Fallen Child was once a regular human that ''really'' hated their home village. It's in their attempt to take revenge on them that they became what they are now.
* WhamLine: Anything the Fallen says, really. But especially the first few lines, in either white or red text, that announce the beginning of a No Mercy run.
-->"It's me, (Player name)."
-->'''"Where are the knives."'''
* WoobieDestroyerOfWorlds: Possibly, depending on interpretations of their hatred of humanity, and how they fit into the neutral and pacifist routes. Asriel notes their reason to climb Mt. Ebott (where people disappear never to return) wasn't very happy.
* WouldHurtAChild: The opening lines to their "fight" with the Monster Child in the genocide route is "In my way." And if you examine the enemy, the description is "Looks like free EXP." Fortunately, Undyne intervenes.
!! Asriel Dreemurr
[[quoteright:100:http://static.tvtropes.org/pmwiki/pub/images/asriel6.png]]
[[caption-width-right:100:It's me, your best friend.]]
[[quoteright:121:[[labelnote:Click here to see his powered-up form.]]http://static.tvtropes.org/pmwiki/pub/images/asriel2.png[[/labelnote]]]]
Crown Prince of the Underground and dearest friend to the First Child.
----
* AbnormalLimbRotationRange: When using his sword attack, he rotates his head 360 degrees.
* {{Animesque}}: In the final battle, he crosses the BishonenLine, calls his attacks, and the attacks themselves are visually stunning and look like complete overkill. It's actually a kind of sad twist on this trope by reminding you that under that almost demonic looking exterior, he's just an eight-year old fighting like how he would have seen in a cartoon or read in a comic.
* TheAntiNihilist: In contrast to Flowey, once redeemed Asriel expresses the opinion that while the world can be a dark place filled with Floweys, what should be strived for is an existence where nobody kills and nobody is killed.
* ArmCannon: One set of his attacks in the first stage of his boss fight has him morph one of his arms into a gun.
* BerserkerTears: Once you save the souls of all your closest friends from within him, he starts to break down. He'll begin to sob while ''BEGGING'' you to let him win, that you and he will be happy together, eventually bursting into a bawling scream as he fires a point-blank DeathRay at you.
* BishonenLine: His final boss form is far more powerful than the boss form he assumed as Flowey in the Neutral run, and is also much more anthropomorphic, simply being a grown up version of himself with slightly demonic features. This ends up getting played with a bit upon his second form, which is strange and mechanical-looking, but is still ''nowhere near'' the abomination Flowey became.
* BlackEyesOfEvil: In his BishonenLine form his sclera are black with narrowed white pupils, contrasting both of his parents who have standard white sclera and black pupils.
* CallingYourAttacks: During the first phase of his fight, the text box will announce which attack he'll use. The same attack types even have multiple variants with different names.
* CameBackWrong: As is said early in the game, when a monster's ashes are scattered onto their favorite thing, their essence lives on, permeates it, even without a SOUL. Unfortunately for Alphys, she had no idea the flower she'd chosen for to bring to life through Determination was carrying Asriel within it. Thus, the product was a soulless vessel carrying the will and intelligence of their crown prince and tainted by the soul of the Fallen Child, with no capacity for any kind of love: [[BigBad Flowey]].
* EvenEvilHasLovedOnes: In fact, it's the driving force behind his villainy. He simply cannot let go of the Fallen Child.
* FightingFromTheInside: Tragically, while this doesn't happen when he's Flowey, when spoken to in the True Pacifist's epilogue he states that the Fallen Child wanted to use their combined power to annihilate the humans living in their hometown. Asriel resisted, and they were mortally wounded as a result.
* HoistByHisOwnPetard: Throughout the game, especially in a Pacifist run, he repeatedly exploits the trust and compassion of the people around him in order to get all monster and human souls in one room and devour them simultaneously. When he finally does, he gains the power of a god - but also regains his own compassion, and Frisk's pacifism turns him from a sociopathic maniac to a sobbing wreck who can't bring himself to hurt people anymore. And if you do the True Reset, he points out you're even worse than he is because you're enacting the very same insane, evil plan he was trying to do after even he himself had let it go.
* IHatePastMe: In the epilogue of the True Pacifist playthrough, he expresses sincere remorse for his actions as Flowey, to the point where he asks Frisk to consider his two forms to be separate individuals should they meet again after he's reverted to being Flowey.
-->'''Asriel:''' Let's be honest. I did some weird stuff as a flower.
* IJustWantToHaveFriends: It's up for debate whether it's an overstatement or not, but the Fallen Child was the closest thing Asriel had to a friend and simply cannot let go his memories of him, to the point of projecting the Fallen onto Frisk; he just wants to see his friend again that badly. This is part of why his Flowey persona is so elated to see Fallen!Frisk at the beginning of the No Mercy route.
* ItsAllMyFault: He explains his "[[TheSocialDarwinist Kill or be Killed]]" outlook as Flowey came from him blaming himself for preventing the Fallen Child from attacking the humans, which resulted in them dying and Asriel being reborn as a flower.
* {{Leitmotif}}: "Your Best Friend" and "His Theme".
* LivingOnBorrowedTime: In the PlayableEpilogue of the True Pacifist, he's restored to his true form, but says that without a soul he'll eventually return to being Flowey.
* NamesToRunAwayFromVeryFast: Asriel looks similar to Azrael, the name of the Archangel of Death.
* OneWingedAngel: After absorbing the Fallen's SOUL, Asriel was stated to have undergone a transformation into a powerful form, which is presumably the same form he takes during the first stage of his boss fight and simply resembles an adult version of his species, similar to his parents. His second form also qualifies, as it resembles a winged, demonic version of himself.
* OnlyFriend: Chara. The entire reason he's putting you through this fight is that if the player gets their "happy ending", they'll leave, taking Chara with them.
* OurGhostsAreDifferent: Unlike the Blook family, Asriel is dead and only persists due to having been accidentally revived as Flowey. Once he collects all the [=SOULs=] in the Underground, he gains enough power to recreate himself, but chooses to restore everyone instead.
* PhysicalGod: In his Boss Monster form he not only has the power of six human [=SOULs=] but of all the other monsters the Child has encountered except Napstablook, making him even more powerful than Omega Flowey.
* {{Portmanteau}}: Asgore + Toriel = Asriel. [[BrickJoke Asgore really is bad at naming things.]]
* SignificantAnagram: His name is an anagram of "Serial Murderer", of all things.
* SuicideByCop: Unintentional, but Asriel purposely held back his power and the Fallen Child's influence when the latter went to attack his hometown. The humans merely saw a monster and decided to slay it - Asriel accepted this fate rather than let the Fallen annihilate them and kickstart another war.
* ThatManIsDead: Invokes it on ''himself'' to Frisk, claiming Flowey is so different that he's someone else.
* TimeCrash: Seeks to cause one after another using the power of the Six Human [=SOULs=] along with every Monster SOUL - locking Frisk in an eternal loop of life with him so he'll never have to let them go.
* TragicVillain: He clung desperately to the memory of the First Child, never realizing that they never loved him back at all. In fact, he was used as a little more than their pawn, and was ForcedIntoEvil as a result of their unholy influence. He has suffered more than any other character.
* TrueFinalBoss: Of the True Pacifist ending, which requires having gotten the Neutral-Pacifist ending.
* UsedToBeASweetKid: Every indication from the story is that Asriel was just as kind as his parents, if not more so. Things quickly went downhill following his [[FalseFriend "friendship"]] with the Fallen Child, the subsequent DemonicPossession, and finally his reconstruction as Flowey without a soul. The betrayal and inability to feel twisted him into something totally unrecognizable from his former self.
* VillainRespect: Being able to stay alive after being attacked by barrage after barrage of his god-like power makes him admit that Frisk really is "something special."
* {{Yandere}}: Just like his Flowey persona and for the same reasons, his desire to keep Frisk in the Underground is a platonic variant. Unlike Flowey however, he grows out of it when he finally comes to his senses.
* WoobieDestroyerOfWorlds: Much less ambiguously than the Human SOULS or the Fallen Child. The worst thing Asriel ever did was take the Fallen Child in and try to be friends with them, and the tapes in Alphys's True Lab indicate that even though he wanted to help the Fallen complete their plan out of platonic love for them, he still had his reservations about it, and furthermore he tried to stop them when it came to fruition. It's because of the Fallen Child's evil that he died, lost everyone close to him, was stripped of his emotions, and gradually turned into what he is when you fight him. So, while his omnicidal actions aren't ''justified'' per se, anything he might have been responsible for that brought him to that point was only in the best of intentions, and the greater scope of everything bad that happened wasn't really his fault so much as it was someone else abusing his good will.
!! Dr. W.D. Gaster
[[quoteright:100:http://static.tvtropes.org/pmwiki/pub/images/sfgjsf.png]]
[[caption-width-right:100:DARK DARKER YET DARKER]]
The man who speaks in hands.
----
* AndIMustScream: You can find figments of him through the world lamenting his horrible fate. The mystery man himself appears trapped in a VoidBetweenTheWorlds. If Gaster's talked to, he gets startled and fades away.
* BeyondTheImpossible: His report mentions negative photon readings, which is a physical impossibility.
* BodyHorror: One of the [=NPCs=] who speaks of him is holding a miniature of his head.
* DummiedOut: An examination of the horrors of this trope. Gaster is lost through the game's files, unable to interact with anyone and aware that life goes on without him as if he's [[RetGone never existed.]] Players can search for him, but there's no way to help and so they can only wonder WhatCouldHaveBeen if Gaster wasn't so unfortunate to be a cut character.
* TheGhost: His existence is only vaguely hinted at through the game. Dr. Gaster was the previous royal scientist before Alphys, but his experiments have gotten him shattered across the time-space continuum. His predicament is so bad that players are only learning about him [[NoFourthWall by fixing a "typo" in the game's save file]] (changing the "fun" item to "Fun" and setting it to certain values) and then trying to puzzle it out through data mining and trial and error.
* GhostlyGape: Gaster is probably a skeleton like Sans and Papyrus, but with that particular expression and the cracks on his face he ends up looking like a ghost.
* HoistByHisOwnPetard: Non-villainous version. Gaster was the one who designed and built the Core, providing the Underground with electricity. Unfortunately, an accident caused him to plummet into the Core's... core, the damage of which was so severe that it blasted him and possibly some of his colleagues across time and space.
* ItsAWonderfulPlot: For poor Dr. Gaster, this trope appears to have gone horribly wrong; one of his grey figments asks the player about the prospect of a world where everything is exactly the same except you don't exist, everything functioning perfectly without you. What's worse is that he wasn't erased from history, and yet life still went on; one might assume that nobody mourned. And it even seems to be worse than that. Other [=NPCs=] needed to be coded back into the game to get any information on him. Whatever happened was so bad it did the same to ''anyone who knew much about him.'' (except Sans who's implied to also know him).
* {{Leitmotif}}: [[https://www.youtube.com/watch?v=n0dgaYe2LZw "Gaster's Theme"]], a song that can only be heard in a secret SoundTest screen that only features a few apparently ''[[DummiedOut unused]]'' songs...
* MeaningfulName: Named after the Wingdings font, which he uses to speak and write.
* TheMissingno: His existence is an exploration of this trope, and what such a character would be like within the context of the game world itself.
* NumberOfTheBeast: There is data in the game for a possible battle encounter against Gaster. For some reason or other, his attributes are all variants of 666. 66 is also the Fun value you need to get the door to his room to appear at Waterfall.
* TheProfessor: A tall skeleton(?) with a goofy grin who speaks entirely in Wingdings. Also the most brilliant mind in all of monsterkind.
* TheUnintelligible: Like Sans and Papyrus, Gaster speaks in the font he is named after - in this case, Wingdings, which... probably aren't a "dialect" the player will understand. Fortunately, lots of translation tools exist online.
* VaguenessIsComing: Among Alphys' reports, there is the elusive Entry #17 in which Gaster talks about doing research on a ever expanding darkness. He then asks what two unknown people think about it.
