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Walking Spoiler / Video Games

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Walking Spoilers in video games.


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    A 
  • Little Mac is the Big Bad of Abobo's Big Adventure. More specifically, the one who kidnapped Aboboy.
  • Ace Combat 7: Skies Unknown has the twin super UAV AIs, Hugin and Munin. Dr. Schroeder only makes light of their existence by the final act, mentioning that he was only able to upload Mihaly's complete flight data into two experimental drones before Ionela destroys the data chip. From then on, he reveals that they're much more of a threat than anticipated due to their self awareness and subsequent plan for automated mass production, something which comes to a head when they show up at the end of the story and attempt to enact their plan despite Erusea's final defeat, setting them up as the final antagonists of Skies Unknown.
  • AI: The Somnium Files:
    • Manaka Iwai. Knowing that she's the corpse discovered in the fishery warehouse is one thing, but any more than that gives away that she was Iris's biological mother (and by extension, that So Sejima was her biological father).
    • Hayato Yagyu cannot be discussed without spoiling both the identity of "Prisoner #89" and the fact that his body is Kaname Date's original one.
    • Saito Sejima, the true Big Bad of the game and the one behind the Cyclops serial killings, also cannot be discussed in any capacity without giving away major spoilers about both Date's backstory and the game's main twist.
  • AI: The Somnium Files - nirvanA Initiative:
    • It is quite difficult to talk about Uru Somezuki, Tokiko Shigure, and Chikara Horadori without revealing the Uru's role as Tearer, and the latter two's roles in the Greater Scope Villains of the game. Tokiko, in particular, is even more difficult to talk about given her role in the Gainax Ending of the game where it's revealed the events within the present timeline was just a huge Batman Gambit for her to reach Moksha.
    • Revealing the Masked Woman's identity also reveals the fact that both her and Mizuki are cloned Designer Babies. Even more-so, revealing that she is playable in the game also reveals the biggest twist of the game (a.k.a. the initial timeline given to the players is a lie).
    • Amame Doi is an Ascended Extra for this game. And when we say that, we mean that she went from being a minor character in the first game to being the one that killed Tearer, and be the Final Boss of the game. Because of that as well as the fact she's actually the sister of Shoma, she is quite hard to talk about.
  • Alice: Madness Returns has Dr. Angus Bumby, a psychologist who presents himself as a man dedicated to helping his patients get over their past trauma. In reality, he is the true Big Bad of the game, responsible for raping Alice's sister Lizzie and brainwashing his patients to sell them into sexual slavery. He also caused the fire that killed Alice's family and reduced Alice to a mental wreck to cover up his rape, making him the Greater-Scope Villain of American McGee's Alice.
  • Akiba's Trip: Undead and Undressed has Rin, a local pop idol who turns out to be Shizuku's younger sister and like her, a Nighteater investigating Daishihon Pharmaceuticals for their connection to the Synthisters.
    • Soga also qualifies, due to being the Big Bad as well as Shizuku and Rin's older brother and the one helping Zenya Amo and Koma Sakaguchi.
  • In Anno 1800, the entire Pyrphorian faction is this in the main campaign. They are the Big Bad and responsible for all the events leading up to the campaign. The player doesn't even find out about their existence, until they help Isabel Sarmento in the new world.
  • Assassin's Creed:
    • Al Mualim is the mentor of Altair ibn-La'Ahad and the true villain of the the first game. It's really difficult to discuss him without spoiling The Reveal that he is the Big Bad when Robert de Sable tells Altair about the hidden tenth Templar.
    • Haytham Kenway from Assassin's Creed III was successfully kept a secret from audiences for years up until the release, yet the first three sequences are played as him and not the main character, his son Connor. The end of the third sequence reveals him to be a Templar, and he serves as the Big Bad alongside Charles Lee for the rest of the game. Since much of the game's major twists involve him and his relationship with his son, it's pretty hard having a spoiler-free discussion about him.
    • The Framing Device of the entire franchise is a huge spoiler in and of itself. The existence of the Animus was kept secret during the development of the first game, and official media for the sequels continue to say as little about the modern-day plot as humanly possible.
    • The Cult of Kosmos in Odyssey is an entire organization of walking spoilers as unmasking the members is an important part of the game and they are the game’s main antagonists who aren’t revealed until a good 3 chapters in. Deimos stands out among them, though, as even revealing their gender might give a solid clue about who they are and their importance in the game’s story.
    • Basim Ibn Ishaq in Valhalla is very much a walking spoiler since not only is he a member of the Hidden Ones but he's actually a Sage reincarnation of the Norse god Loki. On top of it all, his wife Aletheia from the aforementioned Odyssey is the Greater-Scope Villain of the game.
  • The Golden Spider/Chakravartin from Asura's Wrath, seeing he is the true Big Bad and the god of his universe, having manipulated all the events in the game for his own interest. note 

    B 
  • Banjo-Kazooie has The Mighty Jinjonator deliver the final blow to the final boss.
  • Batman: Arkham City:
    • Clayface, who for those familiar with his powers merely mentioning his name gives a big clue to a major twist just before the end of the game. Overlaps with Interface Spoiler as looking at The Joker with Batman's Detective Vision shows he has no bones or internal organs.
    • Simply mentioning Hush spoils the ending to the "Identity Theft" sidequest. Although, those familiar with the character can already guess who is responsible.
    • Discussing anything about the Mad Hatter spoils a (admittedly very short) sidequest as well as the source for a lot of Hugo Strange's influence and resources.
  • Bayonetta 2 has the Big Bad Loptr, who masterminded the events of the game.
  • Bear With Me: Three examples.
    • Flint Ashworth and the biggest bombshell about his fate is a massive spoiler especially in the climax of the game. It's impossible to talk about him without revealing that he's Dead All Along, which changes everything about Amber.
    • Amber Ashworth is also a massive spoiler character and is hard not to mention anything about Paper City without revealing the fact that Paper City is a made-up concept of her to cope with the trauma of losing Flint.
    • The Red Man is the BIGGEST spoiler character in the game, since he's revealed to be a piece of a fireman's cloth ripped by Amber. It's a spoiler as it reveals that Flint did not survive the fire and Amber ripped the cloth from the same fireman. It is impossible to talk everything about him without mentioning the climatic portion of the game.
  • Bear With Me: The Lost Robots: Lifty Workofsky is impossible to mention without revealing the biggest twist of the game that she's the game's true Big Bad who works with Barry and Harold, the criminal duo, and is the real culprit of the robots' disappearances.
  • The Binding of Isaac
    • The game takes the cake with five different examples, primarily due to the abundance of bonus levels. The first two, Mom's Heart and It Lives, are mostly out of this territory since their section of the dungeon is almost immediately unlocked. Satan, secret boss of Sheol, is considerably more of a spoiler, but probably more well-known since the Halloween update has been out for a while. The biggest is Isaac, the boss of the Cathedral in the DLC Wrath of the Lamb.
    • The Chest. It's the *deep breath* mega ultimate super-secret final level. It can only be reached by defeating, well, yourself in The Cathedral while holding The Polaroid (it's a Polaroid photograph depicting three people, most likely Isaac, his mother and his father). Getting through that and beating its boss (???/Blue Baby) will give you what the developers of the game themselves call the closest thing the game has to a canon ending.
    • The remake Rebirth adds a few more. The first is the Dark Room, a floor of equal standing to the Chest. You reach it by beating Satan enough times and unlocking a dark version of the Polaroid called the Negative. Its boss is a demon called The Lamb, and beating it unlocks an ending where Isaac goes missing.
    • Beating either ??? or The Lamb allows you to fight the statues in the Angel Rooms, who formerly just gave you items in the Wrath of the Lamb DLC. Beating two angel statues allows you to fight the definitive true final boss of the game: Mega Satan.
    • There's also the infamous Secret Character known as The Lost. He's a One-Hit-Point Wonder who has a very complicated unlock process (until Afterbirth).
    • Over the course of Rebirth's DLC, a few more spoileriffic superbosses, stages, and characters came to light. Most notable are Hush (a superboss unlocked by defeating Mom's Heart/It Lives ten times, then reaching and defeating said boss in under 30 minutes); Delirium (transforming superboss unlocked by defeating Hush once); the alternate floors and their final boss, Mother (unlocked by defeating Hush three times); Home, Dogma, and the Beast (all unlocked by defeating Mother once); and the Tainted versions of the player characters (unlocked by using either the Red Key or a Cracked Key to open a hidden door in Home).
  • Bioshock:
    • Bioshock 1:
      • Pretty much anything involving Fontaine. The game presents him as being a rival to Ryan, a smuggler, and he died several years ago.
      • In addition, the last name of the player character is a major spoiler. though the game does foreshadow it a bit before hand if you find several audio diaries.
    • In BioShock Infinite, reading anything online about Booker, Elizabeth, Father Comstock, or the Twins is a good way to spoil a huge chunk of The Reveal and the ending, as the spoilers are a core part of each characters' background. Even Comstock's real NAME is a spoiler as to the final revelation.
  • The Blackwell Series has Madeline. Very little is known about her, and even that small bit of information is full of spoilers.
  • BlazBlue: One for every game just about, and almost always revealed in the game's Golden Ending to boot.
    • Calamity Trigger:
      • It's nigh-impossible to talk about Hakumen without revealing that he is Jin Kisaragi from a previous iteration of the time loop.
      • The mild-mannered pacifist Captain Hazama was one himself, being the vessel for one of the Big Bad Ensemble, Yuuki Terumi.
    • Continuum Shift:
      • Saya appears to be Ragna and Jin's missing little sister. Turns out that she's actually The Man Behind the Man and the head of the organization the two have been fighting against the whole time.
      • Mu-12 was one as well, being Noel Vermillion's Superpowered Evil Side and revealing that she was created just like her sister units and being a clone of the aformentioned Saya.
    • Chronophantasma:
      • Izayoi for Chronophantasma continues the tradition of each game having one such character introduced. Specifically, it's the true form of the weapon that Tsubaki Yayoi has been using throughout the entire series.
    • Central Fiction:
      • Susanoo is Yuuki Terumi's One-Winged Angel form, and reveals his true identity as the original consciousness of the Susanoo Unit. Terumi also slayed Hakumen to achieve this form AND was the one who enabled humanity to find the Susanoo Unit and thereby make contact with the Master Unit kickstarting the events the entire series to begin with.
      • The game's title refers to Ragna himself, being the "dream observed by god" or more simply, the primary reason the time loops keep occurring. The Master Unit would constantly reset and change the world whenever Ragna died and so to ensure the world moves forward without interference, Ragna removes himself from the world as well as any memory that he ever existed.
  • Bloodborne presents itself originally as a Gothic Horror game with themes of Victoriana, werewolves, vampires and snakes. The big reveal roughly halfway through is that it's actually a Cosmic Horror - something that becomes increasingly obvious as the enemies become progressively more eldritch, culminating in suddenly being confronted by a giant eight armed spider with about thirty eyes and a tentacled almond for a head, immediately after killing a giant many-legged glowing pillbug. Just the existence of either of these, let alone some of the more exciting creatures, is enough to spoil the actual nature of the game world and thus the twist.
  • Bomberman:
    • Sirius in Bomberman 64 initially appears as a friendly ally to Bomberman. After you collect all 100 Gold Cards, it's revealed that Sirius was the original owner of the Omni Cube and had trapped even more galaxies in there than Altair, as he had a proper knowledge on how to use the cube. Sirius makes up lies to Bomberman that Altair had killed his family; however these are false and he uses them to get Bomberman on his side. After he reveals his true intentions to Bomberman, he callously throws him away and nearly destroys Planet Bomber.
    • In Bomberman Hero, Evil Bomber is the acting ruler of the Garaden Empire who masterminds the kidnapping of Princess Millian and the plot to resurrect Emperor Bagular, all to get revenge on Bomberman for defeating him prior.
  • Angel in Borderlands 2. It is very difficult to talk about her in any respect without revealing that she is working for Handsome Jack, is a Siren, and is also Handsome Jack's daughter.
  • Clare from Brave Soul is the answer to the game's biggest mystery. She's Rudy's "Moon Goddess", who's been appearing in Rudy's dreams for ten years… and she's also Shell, the dragon whose life he saved ten years ago, and his constant companion ever since. The two facts are related.
  • Bravely Default has Airy. It's pretty much impossible to go into details about the little fairy girl who has accompanied the protagonists since the beginning, without mentioning the late-game plot twist that she was Evil All Along and is the main antagonist, manipulating the protagonists into awakening the crystals so she can awaken Ouroboros.
  • Bug Fables:
    • It is difficult to talk about the Dead Landers without giving away that the greater world of the game is more screwed up than it appears to be, with bizarre horrors lurking around in areas not protected by Mother Crystals. The Dead Landers do not show up and are not mentioned until the final area of the game, and them even being bizarre monsters is meant to be a twist as every other enemy in the game has at least some explanation or is clearly based on something in Real Life.
    • Upper Snakemouth's scientists play a major role in both Leif's backstory and the setting of the Noob Cave, in addition to being surprisingly dark compared to most of what else is in the game. By the start, little is known about the Roaches in general, let alone that three of them ran a lab that ran tests on bugs and cordyceps to try to obtain immortality without the Everlasting Sapling.
  • Bugsnax has Elizabert Megafig. Her disappearance is what kicks off the plot, and it's pretty hard to say any more about her without spoiling the game's final section, where she explains that the Bugsnax are actually The Assimilator, while she possesses enough willpower to inflict an Assimilation Backfire and become the Queen of Bugsnax.

    C 
  • The Caligula Effect:
    • Wicked, as the game provided next to no information on her prior to its release. This was done to avoid spoiling The Reveal that Marie Mizuguchi and Wicked are the same person.
    • Thorn is hard to talk about without getting into heavy endgame spoilers. They at first appear to be Shogo's friend who committed suicide (which is quite a spoiler in and of itself) come Back from the Dead, but turns out to actually be another character entirely and turns out to be responsible for a lot of stuff that was initially attributed to μ.
  • Getting a good look at Dracula from Castlevania: Lords of Shadow 2 and Castlevania: Lords of Shadow – Mirror of Fate, or even hearing him speak, gives away the big twist from the end of the first Castlevania: Lords of Shadow.
  • In Caves of Qud, pretty much anything about the Tomb of the Eaters, particularly Herododicus and, in the Gates to Brightsheol, Rainwater Shomer; is a major part of the (current) end of the game's plot.
    • Pax Klanq would also qualify, being a major part of the story immediately before said final dungeon, and scarely - if at all - alluded to beforehand.
  • Everything in the Sacred Grounds in Cave Story due to the area's existence being a huge spoiler, which includes both of its bosses, the Heavy Press and Ballos.
  • It's extremely difficult to talk about Norah from Child of Light without mentioning The Reveal that her real name is Nox, and that she's the Big Bad's youngest daughter who was Evil All Along.
  • Chrono Cross:
    • Robo from Chrono Trigger, because he only exists in Cross as an obstacle that Lynx and FATE spent the entire game trying to bypass or eliminate in order to reach the Frozen Flame.
    • Bringing up Dark Serge will inevitably spoil that Serge and Lynx switch bodies after completing the first trek to Fort Dragonia.
    • The original Schala from Trigger is another Walking Spoiler, because it's only revealed in the endgame that the entire game was supposed to lead to her rescue from the clutches of the Time Devourer. She doesn't appear at all in the game until you find her crystallized inside the True Final Boss.
    • Home World Dario is impossible to bring up without spoiling that he's still alive for you to receive the Masamune from restoring his memories and defeating him in person as the Superboss, because the game otherwise gives you no indication that he's still alive (as his Another World counterpart is dead, and he appears nowhere else in Home World before the Masamune sidequest).
    • Lavos itself reprising the role of the Final Boss because bringing that fact up spoils that it survived its apparent death in Chrono Trigger.
  • Combat Instinct: The Hrumians, introduced in the cutscene preceding Stage 2 of 2, were the original rulers of the Gnork's home planet until the Gnork arrived and turned it into Planet Dead Ball. After you defeat 2's final boss, four Hrumian ion beamers blow up his warpgate and then land the final blow on him. Your bombing of Planet Dead Ball in 1 and detonating its nuclear reactor serves as the Hrumians' excuse to attack Hivez in 3 after the Gnork are destroyed. In 3, they assume combat forms upon reaching Hivez and their last survivor fuses with all their corpses to become the final final boss.
  • At the end of the Soviet campaign in Command & Conquer: Red Alert, Stalin's secretary is revealed to be none other than the Big Bad of the Command & Conquer: Tiberian Series, Kane.
  • Cuphead: The Delicious Last Course: Chef Saltbaker initially presents himself as a kindly fellow who bakes Chalice the Astral Cookie so she can temporarily come back to life, and offers to bake the Wondertart to do so permanently so long as she, Cuphead and Mugman go out and beat the bosses who hold the ingredients to it. In reality, it's a complete lie: he's a megalomaniac who wants to control the astral plane, and he neglects to mention that the main ingredient is a living soul until after he captures one of them so he can use theirs. Then there's also the fact that he pulls a genuine Heel–Face Turn over the course of his community service sentence repairing all the damage he's done, is allowed to rebuild his bakery which got wrecked over the course of his boss fight, and makes amends with both the island's bosses and the cups.

    D 
  • The D4DJ franchise, particularly its video game branch D4DJ Groovy Mix has Lumina Ichihoshi, who at first appears to be a human Virtual YouTuber with a cosmos theme; during a meeting discussing the formation of the DJ unit UniChØrd, the three people who are present in-person for the meeting notice a strange door labeled as "Keep out", assuming it's where Lumina operates and, out of respect for her (since VTubers generally keep their real-life identities secret), choose not to pry in. Later, when curiousity gets the better of them during a blackout, they enter Lumina's studio and find it empty, upon which Lumina reveals that she's actually an Artificial Intelligence, a reveal that completely changes every perception of her.
  • Dark Souls has all the bearers of the Lord Souls, who are little more than shadows of their former selves compared to their appearance in the prologue. This is mostly pronounced with the Witch of Izalith, who got turned into the Bed of Chaos after a disastrous attempt to re-create the First Fire, and ultimately gave birth to demons all over Lordran. Artorias of the Abyss adds Artorias himself, who is corrupted beyond recognition, and Manus, the Big Bad of the content and the former's corrupter.
  • Deadly Premonition
    • Forrest Kaysen. Many spoilers are required to conceal that the fat, jolly tree salesman is not only the Big Bad of the game, but a Humanoid Abomination to boot.
    • George gets quite a few spoilers too, by virtue of being both the Sheriff "helping" York with the investigation (and thus receiving a lot of screen time throughout the game) and the New Raincoat Killer; as does Thomas, due to his relationship with George, his own status as a minor villain, etc.
    • Zach, York's Not-So-Imaginary Friend. The first reveal of his origins, given midway through the game, is a big enough spoiler on its own, but there are spoilers behind those spoilers, escalating all the way up until the end of the game, when Zach's true nature as the real protagonist is revealed, and York is shown to be the imaginary one.
  • Given its nature as Undertale's sequel, Deltarune also has several characters who are saturated with spoilers: Namely, the two hidden bosses of the first two chapters (as of this writing), Jevil and Spamton. The lore they reveal about the mysterious individual(s) that drove them to insanity and potential future antagonists they hint at are massive spoilers, as well as the Shadow Crystals they hold, which serve a mysterious purpose.
    • Spamton in particular was the first character in the game to get his own page on this wiki, with almost all of them being spoilers to some degree. The fact that this seemingly random salesman NPC living in a dumpster is actually Chapter 2's Shadow Crystal holder is already enough of a surprise, but he's also very hard to talk about without revealing his role in the secret Weird Route, or his past and motivations.
  • Devil May Cry 5 turns Vergil into one since mentioning his presence in this game at all will spoil that the tritagonist V and the game's main Big Bad Urizen were each a Literal Split Personality of him that bring Vergil back when they manage a Fusion Dance. Some of the early cutscenes, dialogue lines, and even Capcom's pre-release marketing don't show his face nor mention his name in order to deliberately preserve The Reveal halfway through the story.
  • In Diablo III, the true identity of the Stranger that fell from the sky is not revealed until the very end of Act I, where it turns out to be a newly-human Tyrael who has sacrificed his angelic status to aid humanity directly against the last two Lords of Hell. He plays a major role in the rest of the game, serving as the de facto leader of your small party and even taking up his sword, El'druin, to battle alongside you at certain points in the final two acts.
  • Disc Creatures has Dr. Greype, a benevolent scientist who is later revealed to be the main antagonist, albeit a Well-Intentioned Extremist who decides to mutate Aubergee into Scourghan and use its newfound power to destroy the Disc Net after seeing humans use creatures as weapons over and over again, so that humans no longer have the power he has come to believe nature didn't design them to have.
  • Disco Elysium:
    • The killer: the Deserter, Iosef Lilianovich Dros. The player is introduced to him at the tail-end of the game as the final puzzle piece to the mystery. Very few clues in the game lead to his existence, and even though it's obvious in hindsight (and that he's a bigger part of the puzzle than it first seems, since he also killed the prior foreman of the Debardeurs' Union), the fact it wasn't Klaasje or Ruby invalidates a large portion of the mystery prior to the tribunal.
    • The Insulindian Phasmid, the second miracle you find on the inlet after Iosef, in the same clearing. The phasmid is only mentioned in hearsay and stories from Lena. From her description, it's tall, pale, and gangly, but the last thing you expect it to be is real. If you have Kim with you, you can even snag a photo of it, being the first ones to prove its existence.
  • Disgaea:
    • The mere existence of real Overlord Zenon spoils the first half of Disgaea 2: Cursed Memories. The identity of this person (revealed in the final five minutes AFTER the final boss) spoils the entire game.
    • Geoffrey is Mao's incredibly efficient butler in Disgaea 3: Absence of Justice. Anything beyond that description will turn the game on its head.
    • Nemo of Disgaea 4: A Promise Unforgotten is a mysterious figure working behind the scenes in the Corruptment. To say anymore about him would spoil a huge chunk of the game.
    • Xenolith from Disgaea Dimension 2. Even his character design is a pseudo spoiler, since his resemblance to Etna exposes a major plot twist.
    • In Disgaea 5, the only things you can talk about regarding Liezerota without spoiling many critical plot twists are her leoine features and that she's a Nice Girl. She's that much of a spoiler that Nippon Ichi accidentally spoiled one of the game's major twists several months before the release date with a seemingly harmless update to the game's website.
  • In Disney Princess: Enchanted Journey, Big Bad Zara appears only for the final boss fight.
  • Donkey Kong Country Returns: Tiki Tong. Normally, if you lose a life in a specific world's level, you get a silhouette of its leading instrument tiki's face as the screen transitions to the lose a life screen. In the volcano, which is the last world, Tiki Tong's face is replaced with a question mark before you meet him.
  • Dragon Age:
  • DragonFable: How do you mention the Mysterious Stranger without revealing that he was the true mastermind behind everything that happened over the entire first chapter of the game? You don't. How do you talk about Wargoth without revealing that the one you fight throughout the second chapter is actually Warlic's demonic half that split from his human half and took form after Warlic overloaded his mana pool, by creating a light sheild to protect Falconreach from the Mysterious Stranger? You don't. How do you mention Jannia, the Arc Villain of the third chapter, without addressing how she used to be a friend of both Warlic and Xan until she got frozen in everlasting ice during the same duel that turned Xan into the insane pyromancer he is, and that both of them lost their minds due to spending at least several decades trapped in their own mutually-exclusive magical prisons, immortal, but totally awake and aware of the passage of time? You don't.
  • Dragon Quest IV: The first time you meet Psaro the Manslayer, he pretends to be a poet but has a unique sprite, dressed in black and wielding a prominent large sword. Anyone paying attention in Chapter 2 could identify him.
  • In Dust: An Elysian Tail, we have the protagonist himself, Dust, who due to him being an Amnesiac Hero on a Quest for Identity, has a massive amount of spoilers regarding who he really is and what's in his past.
  • The infamous Hidden Fun Stuff from Dwarf Fortress. It's an Unusual Euphemism for Hell and its resident horde of demons, which will invade your fortress if you dig too deep. Many players use circus-themed euphemisms in reference to it, such as calling the demons "clowns", and referring to the adamantine metal that usually stands between the surface world and "the circus" as "cotton candy".

    E 
  • The Elder Scrolls Online has Darien Gautier, a Breton knight who assists the player character throughout several quests, and is seemingly lost at the end of the main questline. His return in the Summerset DLC reveals that not only did he survive, he's not actually human, but a creation of the daedric prince Meridia intended to serve her will. He ends Summerset with a Heroic Sacrifice and the reveal that Meridia is slowly stripping him of all memories and free will, thus making it very difficult to discuss Darien's character or Meridia (who was a Big Good during the main questline) without major spoilers.
  • Eternal Darkness:
    • Anthony isn't a spoiler in himself, and neither is his death; after all, he lived in the year 814, and the game's present day is 2000. What is a spoiler is that he technically survives his chapter as an undead abomination that must be finally put to rest by the next chronological visit to the cathedral, Paul Luther, as a miniboss. A full 670 years later.
    • Mantorok, one of the four Ancients in the story, appears at first to be on humanity's side in combating Pious Augustus, who sealed its body and power within a Cambodian temple in the 1100s. By achieving 100% Completion, you find out that it's not nearly as helpless as it might appear.
  • Since the plot revolves around trying to understand and defeat the monsters of Evolve, which initially appear to be nothing more than another dangerous species on Shear, any discussion that involves more detail than that carries major spoilers. Unusually, the biggest spoilers will occur in discussions instead of playing the game, as the expiration of TRS's contract and 2K subsequent cessation of support means The Reveal never got to happen in-game but was instead revealed by the developers in the last few hours when they had creative control.
  • In E.V.O.: Search for Eden, the Final Boss and Big Bad, Bolbox, as well as the Greater Scope Villains and Well Intentioned Extremists, the Whispers/Martians, are extremely spoilerifc. Bolbox isn't even hinted at until the end and the Whispers only appear in secret areas before the ending.

    F 
  • For Fairy Fencer F, there's Sherman, a handsome nice guy that believes in justice, wishes to bring peace to the world, and joins Fang and his group at one point. However, he later attacks Tiara shortly before the singularity happens and in the second timeline, he shows an evil side, kills the president of the Dorfa Corporation, taking his place, plans on sacrificing Tiara in order to awaken the Vile God so that he can create a new world of peace, is revealed to be the one that killed Tiara in the first timeline, and finally merges with the Vile God and becomes the Final Boss.
  • Fallout
    • When you finally meet President Eden face-to-face in Fallout 3, you were probably not expecting him to be an A.I.
    • Fallout 4:
      • It is very hard to talk about Shaun (aside from his initial kidnapping) without revealing that he has become the leader of the Institute.
      • From the Nuka World DLC of that game, the fact that John-Caleb Bradberton is alive with his head in the jar makes him a huge Walking Spoiler.
  • From Far Cry 3: Blood Dragon, we have the Battle Armored Dragon Assault Strike System or B.A.D.A.S.S. for short, a Blood Dragon that you get to pilot near the end of the game. It also talks and shoots lasers out of its fucking eyes.
  • Final Fantasy:
    • About 2/3 of the way through Final Fantasy V, the party meets Krile. She is a friendly young girl. This is the most detail you can describe her with if you don't want to reveal that she is Galuf's granddaughter, a princess (because he is really a king), or that she takes his place upon his death.
    • Final Fantasy VI has Terra Branford's esper form. These days the fact that she is half-Esper has entered It Was His Sled territory, even being a central part of her combat methods in Dissidia Final Fantasy, but at the time it was a pretty big surprise only revealed several hours into the game (although it was foreshadowed before then).
    • Final Fantasy IV: The After Years has the Creator. Not only is it impossible to describe without spoilers, its name and even its very existence are major spoilers.
    • Final Fantasy XII has Venat (presumed to be Dr. Cid's imaginary friend) as well as the rest of the Occuria, whose actions drive the plot of the game. In Venat's case she's actually on the cover of the game's case, albeit stylized in such a way that she's not easily identifiable.
    • Final Fantasy XIII:
      • Primarch Galenth Dysley is a clear and cut villain, but he is much more than he appears; his true identity as the fal'Cie Barthandelus is a major lategame surprise.
      • The fact that the other side of the Big Bad Duumvirate is Orphan, a fal'Cie who powers Cocoon, is also a major spoiler.
    • Final Fantasy XIII-2: At first glance, Alyssa Zaidelle seems to be a typical "nice secretary" for Hope, but her backstory becomes a major plot twist.
    • Lightning Returns: Final Fantasy XIII:
      • As his regressed appearance implies, Hope's role is far more complicated than simply being the Mission Control, and what happened to him, as well as his ties to Bhunivelze, are heavy endgame spoilers.
      • Speaking of which, Bhunivelze may seem like a benevolent god, but in truth, he's indirectly responsible for everything that happened across the trilogy, and is the Final Boss of the game. That being said, it isn't as surprising if you've been following the backstory and know what his children were up to in his absence.
      • Roaming the Wildlands is a white-and-green chocobo called the Angel of Valhalla. Its true identity as a reincarnated Odin, Lightning's Eidolon in the original game, is a major spoiler to one of the story missions.
    • Final Fantasy XIV:
      • Solus zos Galvus, the first Emperor of Garlemald, also known as the Ascian Emet-Selch, turns the entire storyline of the game on its head several times over during the later patches of Stormblood and the main story of Shadowbringers. Interestingly, the game does not spoiler-mark the achievement for his Superboss fight "Hades's Elegy", as it usually does for Walking Spoiler characters — it just uses a different name. By the time you know who Hades is, it's obvious you're going to need to fight him.
      • Gaius van Baelsar, a.k.a. Shadowhunter, as of patch 4.5 of Stormblood. While his appearance in 1.0 and A Realm Reborn isn't a spoiler, his survival is a significant twist that comes more than five real-world years after his presumed death.
      • Meteion, introduced in Endwalker, is this by virtue of being the catalyst that set into motion everything that went wrong, having caused the Final Days that ended the Ancient's civilization, which led into the creation of Zodiark and Hydaelyn, the Sundering of Etheirys, and the formation of the Ascians with all of their machinations.
    • Final Fantasy VII Remake has Zack Fair's appearance. Now Zack himself isn't a spoiler since he was in the original and is the protagonist of its prequel Crisis Core, but his appearance in this particular game is huge.
  • Fire Emblem:
    • Fire Emblem: Genealogy of the Holy War: The protagonist himself, Sigurd, is one for dying halfway through the game, leading to the Time Skip in which his son Seliph and the others of his generation finish what Sigurd started. This has become It Was His Sled by now, though, given that the fact that the story takes place over two generations is a key part of the game.
    • Fire Emblem: The Sacred Stones
    • Fire Emblem: Radiant Dawn:
      • It's almost impossible to discuss Zelgius without revealing that he's the Black Knight, which is a huge spoiler for both Radiant Dawn and its predecessor Path of Radiance.
      • Yune is even worse, as revealing who or what they are directly spoils the biggest twist of the duology.
      • Pelleas is very hard to talk about without spoiling one or both of the following: that you're forced to kill him on your first playthrough, or that he isn't really Ashnard's son.
      • Sephiran, an apparent side character who seems to just be a face for the Begnion senate, turns out to be much more than he seems - he is secretly Lehran, the "fourth" of the Three Heroes, and is also the Big Bad! His backstory is quite literally a full summary of the plot and mysteries of both Tellius games, which includes the three characters above.
    • Fire Emblem: Awakening:
      • "Marth" not actually being the original Marth is one of the few things that can be left unspoilered... but only if you construct the sentence without gendered pronouns, because this Marth is in fact Lucina, the main character's daughter from the future.
      • The Hierophant is introduced as simply someone high up in the Plegian order, but then they take off their hood and it's revealed they have the same appearance as the player-created Avatar...because they're actually the Avatar from the Bad Future, possessed by Grima.
    • Fire Emblem Fates:
    • Fire Emblem: Three Houses
      • Nemesis was shown in a cutscene at the beginning of the game, and referenced a few times throughout the story, but the truth behind Seiros's quest for vengeance, as well as the fact that resurrecting him is the ultimate goal of "those who slither in the dark" (at which they succeed in the Verdant Wind route), is one of the game's key plot twists that is only revealed in the Verdant Wind route.
      • Good luck talking about Rhea without revealing that she is Seiros (a.k.a. the goddess that killed Nemesis in the beginning of the game) as well as her motives in wanting to resurrect her mother. Said mother is also a Walking Spoiler thanks to her being Sothis (a.k.a. the girl that talks to Byleth at the first half of the game).
      • Edelgard is one of the main lords of the game, making her seem as if she is one of the protagonists. In truth, she is the Flame Emperor; making her a major antagonist in all routes, except Crimson Flower, her own route. In the Azure Moon route, it's taken up to the point where she is the Big Bad and the Final Boss. By extension, this makes it difficult to talk about the Black Eagles without spoiling that they are the only house to have two paths, based on whether or not Byleth chooses to side with Edelgard.
      • Lord Volkhard von Arundel, Tomas, and Monica are all secretly members of "those who slither in the dark", with Arundel being Thales, Tomas being Solon, and Monica being Kronya. Not to mention that it is implied that these people have killed and replaced the real versions of Arundel, Tomas, and Monica.
      • Speaking of Monica, hard to discuss spinoff game Fire Emblem Warriors: Three Hopes without revealing the Point of Divergence that makes this an alternate timeline is Shez saves Monica before she can be killed by "those who slither in the dark", leading to her exposing them, and a way different political situation than in Three Houses.
  • Five Nights at Freddy's has many spoiler-heavy characters, as each of the six games have a rather hidden and complex backstory:
    • Golden Freddy, Shadow Freddy and Shadow Bonnie, the former from the first game and the latter two from the sequel. Knowing even a little bit about them can ruin the surprise on the rare chance you run into them, and the former slowly comes into importance in the backstory.
    • The Purple Man and the Puppet, both debuting in the sequel, are incredibly important characters in the franchise's backstory. In fact, it's nearly impossible to not spoil the former since he only shows up in the backstory.
    • Springtrap in the third game is a massive one. It's hard to describe it without giving away the fact that there's a human corpse inside the suit. However, thanks to a few randomly-occurring boot-up screens, a good portion of the fanbase knows this already.
    • Both the child protagonist and his Big Brother Bully in Five Nights at Freddy's 4 are filled to the brim with spoilers. Without giving too much away, let's just say that they might have a very important connection to the franchise's Noodle Incident. It goes double for later games, which heavily imply a distinct connection to a certain someone and that the older brother grew up to be at least some of the other protagonists.
    • Fredbear from the same game has more than one reveal to be had, both of which make it harder to explain him without giving them away.
    • Circus Baby from Sister Location is more than players may assume her to be, making discussion of her role difficult. From the same game is Ennard, and talking about it is flat-out impossible without giving away a few major twists revealed on Night Five. And as of the Custom Night update, the true identity of protagonist Eggs Benedict is a massive twist on the franchise's lore.
    • In Freddy Fazbear's Pizzeria Simulator, Lefty is hard to talk about without giving away that it's actually the Puppet in disguise. Likewise, Cassette Guy's true role as the Big Good pulling a Batman Gambit to end the nightmare once and for all caused nearly his entire folder on the character page to be spoiled out.
    • Vanny/Vanessa is also hard to talk about without major spoilers, as she's heavily implied to be the player character of Help Wanted who undergoes a horrific fate by the time the game ends, as hinted by an Easter Egg in the DLC. She also plays a significant role in the Special Delivery unintended emails, and becomes an active threat in Security Breach.
  • For Freedom Planet 2, bringing up Princess Cordelia is difficult due to the fact that you don't learn about her until the postgame, her interactions with Merga as well as being her lover, and the fact that she's still alive.
  • FTL: Faster Than Light has the Crystal race, which is designed to be a secret in-universe and out. However, due to the requirements for their sector and ship being so infamously dependent on the RNG, they are squarely a case of It Was His Sled.

    G 
  • Genshin Impact:
    • Raiden Makoto is impossible to discuss without revealing that Ei, the current God of Eternity, isn't the original Electro Archon, but rather her Backup Twin who took over after Makoto perished during the Khaenri'ahn Cataclysm 500 years ago, and that most of Inazuma is unaware of this. Even before that comes The Reveal that the Raiden Shogun seen through the first half of Chapter II is actually a puppet duplicate, while the real Ei has been hiding in the Plane of Euthymia for centuries.
    • Chapter IV has Focalors, the Hydro Archon - more specifically, the real Focalors. Any discussion of her necessarily gives away that Furina isn't the actual Hydro Archon, but a cursed human enlisted to pose as her as part of Focalors' plan to avert The Prophecy of Fontaine's destruction. Not helping matters is that Focalors' plan involves orchestrating her own death, which occurs only minutes after she is properly introduced to the player.
    • The Second and Third Descenders also count - the former is only mentioned in some Story Breadcrumbs, but is indirectly responsible for the tyranny of the Heavenly Principles, and thus for the actions of both the Abyss Order and the Fatui. The latter, meanwhile, only has one concrete bit of information revealed - the Third Descender's remains were used to craft the Archons' Gnoses, which both sheds some light on the Tsaritsa's plan to collect all of the Gnoses and casts a shadow on the Traveler's relationship with the gods of Celestia going forward.
  • Yomiel, the mysterious Big Bad of Ghost Trick. When he shows up, the game pretty much heads into one Mind Screw and Plot Twist after another. For that matter, Ray and Sissel (the player character himself) also count since the game is about finding out what his identity was before he was killed.
  • Glory of Heracles III has Lord Baor, a character mentioned often in the story who becomes significant in the latter half of the game. His actions turn out to be a major part of the game's plot.
    • The two nameless party members—the Protagonist and the Hero—both turn out to be this, due to their true identities as Lord Baor and his son respectively.
  • It's virtually impossible to talk about Ren and Lindow A.K.A Corrosive Hannibal from God Eater Burst without completely spoiling the plot.
  • Granblue Fantasy has Yatima. Any information about her beyond her name or the fact that she's CENTCOM gives away massive twists for the side stories and events in the Society plotline.
  • Grand Theft Auto: San Andreas: Played with for Big Smoke. While he does have plenty of defining character traits (like quoting the bible and his large appetite, as well as being the kindest to CJ after the latter's return from Liberty City to his hometown in Los Santos), all of it is eventually revealed to mask and hint at his subsequent betrayal, which is later on discovered.
  • Guilty Gear: For players that have only known Bridget from her debut in XX, where she was introduced as a crossdressing boy, it's impossible to discuss her appearance in -STRIVE- without spoiling her Coming-Out Story as a transgender woman.

    H 
  • Haunting Ground: Lorenzo, who spends 3/4 of the game as a Mysterious Informant, can't be talked about without giving much away (especially given that his first cutscene is a Motive Rant about how he now has Fiona all to himself). Riccardo is also pretty spoiler-heavy.
  • Given the ways that the plots work in Hotline Miami and its sequel, most characters and their goals are quite spoiler-heavy:
  • In Hyperdimension Neptunia Victory, Rei fits this trope like a glove. Prior to release, she's only billed as one of the Seven Sages, aka the villains of the game. What Compile Heart doesn't reveal is that she's the one who sends Neptune into the past, pulls off an epic Slasher Smile, and surprising a lot of gamers, is the True Final Boss instead of Magiquone/Arfoire.
    • Its sequel Hyperdimension Neptunia Victory II, we have Kurome Ankokuboshi. Unlike Rei, she doesn't have any mention in some preview articles. However, one of the premises suggesting one of the main characters will fall into the dark side. At a first glance, many player believes Neptune is the one who fell into dark side, but it reveals that Uzume (particularly the original one) is the one who fell, as well as the one who responsible for the destruction of her Zerodimension's counterpart dimension and Gold Third incident.

    I 
  • Ib:
    • Since nearly all of Mary's screen time lends itself to her being a Jerkass Woobie Creepy Child with a palette knife (after being introduced as a Cheerful Child foil Ib), it's very difficult to have a spoiler-free discussion regarding her character.
    • Guertena is very difficult to discuss without revealing the fact that he's behind the creations of every artwork that came to life including Mary and how it (in)directly led to the main conflict of the game.
  • Iji has an entire species of this trope, the Komato, whose existence spoils both the true motivations of the Tasen and the second half of the game. Fortunately just mentioning their name them won't spoil anything, as there is a very early Interface Spoiler.
  • Inazuma Eleven:
    • Garshield Bayhan, essentially The Man Behind the Man to Kageyama Reiji, who seemed to be the Big Bad of the series in the first two games and the reason behind Daisuke's death. Garshield is the one who has been manipulating his plans all along and the one who attempted to kill Daisuke (but ultimately turns out he failed, which is another important reveal), making him the actual Big Bad.
    • It's hard to talk about Mr. Araya without revealing he's actually Endou Daisuke, Mamoru's long-thought deceased grandfather.
  • I Was a Teenage Exocolonist: The game is about a single group of people Settling the Frontier on a new planet and the player gets introduced to everyone within that group relevant to Sol's life quite quickly. A second ship always shows up mid-way through the game with no warning from Sol's perspective and it's possible to discover that the sentient species the planet had a long time ago left still-working elaborate Organic Technology behind. Both of those facts come with the existence of a few named characters who are quite difficult to talk about without getting into their affiliation with the second ship or their nature as alien Artificial Intelligence.

    J 
  • In Jade Empire, the three main antagonists - Death's Hand, Emperor Sun Hai and Master Sun Li - fall under this trope. Said characters play with the Big Bad and The Man Behind the Man tropes, causing a lot of spoiler tags on their entries in the character sheet.
  • Normally, Kor from Jak II: Renegade would just be your typical old man. Most of his tropes come from the fact that he's really the Metal Head Leader in disguise. What's particularly clever about this one is that Kor acts as The Mentor to The Kid and a Cool Old Guy towards Jak and Daxter. Most players likely won't bat an eye at some of the spoiler-tags because they might assume he suffers Mentor Occupational Hazard (justifying his absence from later games), and even then they might be misled into thinking that the secrets he's obviously hiding are considerably more benevolent than they turn out to be.

    K 
  • Kid Icarus: Uprising
    • After you defeat Medusa and the fake credits roll, the true villain, Hades, comes in and takes over the Underworld Army. And since we were led to believe that Medusa was the villain with no hints of Hades being in the game…
    • To a lesser extent, pretty much everyone who is introduced after Chapter 9, which is built to look as much like the final dungeon as possible. This is the reason why the character pages of Kid Icarus have no marked spoilers. The Chaos Kin is an especially strong example, since talking about it not only spoils that the game goes on after Chapter 9, but it is also likely to reveal much about the Chaos Kin's story arc, particularly Pit being trapped in a ring for three years and Palutena turning evil.
  • The Final Boss of killer7, Greg Nightmare, deals with this due to being killed before his debut and being involved with a massive conspiracy about the power of America.
  • Kingdom Hearts:
  • Many villains from Kirby end up as this trope, since most of them are quite darker than the rest of their respective games:
  • Klonoa
    • In Lunatea's Veil, the King of Sorrow's name alone gives away a large portion of the game's plot. Essentially, the kingdom he ruled over faded away, with him as the sole resident, when the rest of Lunatea chose to forget sorrow. Only problem was that someone had to take in the sadness they shunned, with that someone being said king. Because of this, he'd secretly manipulate Klonoa (and everyone else) throughout the game, unbeknownst to the player, so that they would make the Kingdom of Sorrow reappear and allow it to become part of Lunatea again. And he has no problem personally destroying the world when this backfires.
    • Additionally, Bagoo from Empire of Dreams first appears as the royal advisor to Emperor Jillius, who's plagued with insomnia and thus has banned dreaming in the eponymous Empire. We learn at the end that Bagoo was the one who caused Jillius' insomnia and placed a curse on the Empire in hopes of taking over.

    L 
  • The Mother from La-Mulana is impossible to talk about much without going into spoilers about just who she is and her importance to the plot. In fact, the opening cinematic even does its share of spoiling. Some might also argue the existence of Hell Temple as well as the "Treasure That Must Not Be Seen", though those are pretty squarely in It Was His Sled territory at this point.

  • The Legend of Zelda:
  • Live A Live:
    • All of the characters from the Middle Ages chapter are a case of this, as knowing about them spoils the reveal that the game continues after the initial 7 chapters are complete. In particular, Oersted, the protagonist of the chapter, is intentionally designed as a Flat Character for most of the chapter until his true character is revealed at the chapter's end, making it hard to talk about him without discussing the events of the chapter.
    • The original Lord of Dark can't be discussed without revealing that he's seemingly been dead from the beginning, a reveal that coincides with the moment the Middle Ages chapter's plot goes from "typical fantasy JRPG story" to "dark deconstruction of the genre".
    • Everything about Odio is this, as knowing of his existence spoils the reveal that the game's seemingly disconnected chapters (and more specifically, their Arc Villains) are all connected. It's also hard to discuss him without bringing up that he's Oersted, spoiling the reveal that the Middle Ages chapter is a Protagonist Journey to Villain story. And in the remake, there's Odio's final form, Sin of Odio, as knowing of this form spoils the fact that the remake doesn't end with the Boss Rush against the chapter's bosses like the original.
  • Killabilly from Lollipop Chainsaw, who appears only after Juliet has killed all five Dark Purveyors.
  • Lonely Wolf Treat: Mango, the old rabbit living with Treat's pack, has more to him than one might think as he plays a role in the backstory of his daughter Juju who thought he was eaten by wolves, hence why she's turned into what she is today.
  • Erim, the Sinistral of Death, in the Lufia series. She appears in different mortal guises throughout the series, and her role varies from game to game. One game has her unknowing reincarnation, one game has her observing and manipulating the heroes, and one game has her work with the heroes to try to stop the Sinistrals for good. Needless to say, it's very difficult to describe Erim's role in the plots without revealing who she is in each game.

    M 
  • Mass Effect:
    • Sovereign as the true Big Bad of Mass Effect is treated as extremely sensitive. The Reapers in general are not considered spoiler information, but he is.
    • Legion from Mass Effect 2, not only as a Geth protagonist (as they'd been the major enemy in the previous game), but also that they can join the player's squad.
    • Morinth from the same game. You can recruit her in place of her mother, Samara, if you choose to betray the latter during the climax of her loyalty mission, though to get the option to do so you need a sufficient Paragon or Renegade score. Even the fact that the Ardat-Yakshi is Samara's daughter is a twist.
    • The Human Reaper, final boss of ME2, whose existence has the entire Collector plot revolving around it, as well as being a huge reveal for the motivations of the Reapers.
    • Javik in Mass Effect 3, since his very existence spoils the fact that not all the Protheans are dead, since the first game had the few survivors' life pods run out of power while on Ilos, and by the time Shepard and company reach it they've all been powered down. Also ties into The Reveal in Mass Effect 2 that the Collectors are actually indoctrinated Protheans.
    • The Catalyst from the same game, since he literally only appears in the last scene of the game. This also spoils that he is an individual rather than an object.
    • The creatures from the Leviathan DLC of the same game, since they're the last remnants of the first race to be turned into a Reaper and give an epically spoileriffic Info Dump.
    • The Citadel DLC of the same game has its Arc Villain who turns out to be a clone of Commander Shepard. There's also Maya Brooks, who turns out to be Evil All Along and The Dragon to the Clone Shepard.
    • The Jardaan race in Mass Effect: Andromeda is impossible to talk about in substance without revealing that, in addition to creating the Remnant Vaults the player explores throughout the game, they created the angara race.
    • Likewise, the very existence of the race that created the Scourge to fight a war with the Jardaan constitutes a major end-game spoiler.
  • Master Detective Archives: Rain Code:
    • Makoto Kagutsuchi, the CEO of Amaterasu Corporation, is actually the Big Bad who was Evil All Along, and it's impossible to say anything about him beyond his surface-level persona presented prior to The Reveal without stating that he's the culprit behind the Great Global Mystery case who's been kidnapping criminals for Kanai Ward's food supply, or that he's actually Number One's homunculus clone, and his identity as a homunculus also spoils that everyone else in Kanai Ward is also a homunculus, as it's his own angst over being a homunculus that drives his extremist actions.
    • Dr. Huesca, Amaterasu Corporation's head researcher, where his existence also spoils the identity of the company's head researcher, a mystery unanswered prior to his reveal, and also reveals the story's Ontological Mystery, as his actions in the backstory caused the game's present day conflict as a result of his experiments. It's also impossible to describe him without, in turn, spoiling his relationship with Peacekeeper director Yomi, and, consequently, that said relationship is why Yomi manipulated Yakou Furio into killing him.
  • Mega Man
    • Mega Man V has Sunstar, which no mention of whatsoever is brought up until after you've defeated Dr. Wily. He turns out to be the ultimate Stardroid and becomes the Final Boss of the game.
    • Mega Man X
      • Lumine in 8, who's kidnapped at the very beginning of the game and isn't seen again until the end, when he (allegedly) kills Sigma off for real and reveals himself as the true mastermind of the game's events.
      • Sigma would count in some MMX games (just like Dr. Wily would technically count for the classic series), if him being The Man Behind the Man wasn't so common that someone else being the Big Bad of the game is a bigger twist.
      • Mega Man X: Command Mission has Colonel Redips, who sends Maverick Hunters X and Zero on a mission to quell the rebellion army. After you defeat Epsilon however, Redips quickly stabs them in the back after they return the supra-force metal to him, revealing himself as The Man Behind the Man to Epsilon and the real mastermind behind the game's events. Spider even more so, because he was Colonel Redips the whole time.
    • Megaman Zero 3 has Omega Zero, the pilot of the mysterious Omega, Zero's original body, and the Final Boss all in one.
    • The various endgame, bonus and twist bosses in the Mega Man Battle Network series. In rough chronological order: The LifeVirus, Bass.EXE, Zero.EXE, LifeVirus-R, Gospel, Alpha, Serenade.EXE, and BassGS.
    • Pat Sprigs in the first Mega Man Star Force is at first just a student in Geo's class. Then it's revealed he was abandoned by his parents in Dream Island, has a Split Personality and also hosts an FM-ian. And that's just the tip of the iceberg...
    • For fangames:
      • Mega Man Unlimited has Zero's prototype form, who only shows up in the final Wily Stage and is a Post-Final Boss and Hopeless Boss Fight.
      • In Mega Man Rock Force, Justice Man is revealed to be the one behind the events of the game, having decided to ensure freedom for him and all robots by starting a rebellion against humans and capturing the Rock Force.
      • For Mega Man Revolution, we have Dr. Remir, who is revealed to be the true Big Bad of the game and actually hijacks the plot from Dr. Wily! In addition, he's also an alien whose race basically created the Evil Energy.
      • In Mega Man X: Nightshade, Bass is the true identity of the Big Bad Noctis.
      • On the page of Rockman ZX Prequel, every entry involving Big Bad Virel is spoiler tagged for good reason.
  • Metal Gear
    • Big Boss in Metal Gear Solid 4: Guns of the Patriots appears for the last hour (give or take) of the gamenote . His whole presence is a spoiler in on itself, along with Major Zero, since Big Boss was supposed to have been dead for almost twenty years and Zero would be clocking in ninety years old at the very least. Both of them, their presence, and their allegiances are also crucial to understanding about half the plot of the series, so anything they say can become a spoiler.
    • Senator Steven Armstrong in Metal Gear Rising: Revengeance. While seemingly a behind-the-scenes villain, one could not have guessed that the guy turns out to be a nanomachine-enhanced freak of nature capable of tossing Raiden around like a ragdoll, to say nothing of his true motivations. However, he's quickly becoming a Fountain of Memes for this very reason, as well as being an absolutely hilariously hammy villain.
    • Metal Gear Solid: Peace Walker has Paz Ortega. Fans can't talk about her without discussing her reveal as The Mole near the end of Peace Walker, her apparent death at the end of said game and, more recently, confirming said Disney Death in Ground Zeroes only to kill her off again.
    • Metal Gear Solid V: The Phantom Pain has Ishmael, the Medic from Ground Zeroes, and Venom Snake himself. Giving details about any of them will spoil the major Twist Ending the game has, namely that Venom Snake was the Medic (who underwent procedures to mould him into someone like Big Boss) and that Ishmael is the real Big Boss in disguise.
  • Metro Exodus: In the Moscow level, Colonel Miller appears firstly after confronting Artyom with his recklessness. However, for new players who haven't played the prequel, Miller is a literal walking spoiler just by looking at his prosthetic legs, because it already spoils the significant plot of the series: Exodus takes place AFTER the events of Last Light's Redemption (Good) ending during the game's Grand Finale (Battle for D6).
  • Monster Hunter:
    • Monster Hunter 4 has the Shagaru Magala, the mature form of the Gore Magala who's been hounding you throughout the entire game, infecting some monsters with the Frenzy Virus while it's at it.
    • Monster Hunter: World has Xeno'jiiva, the entity responsible for causing the Elder Crossing, the event that drives the game's plot. You only learn that something might be causing the Crossing a few quests before encountering the something in question.
  • Mother 3
    • The game features its Big Bad, Porky Minch, who previously appeared under the localized name of "Pokey Minch" in EarthBound (1994), since before he appears there's little indication that the game's plot is actually directly connected to the previous game in the series.
    • Dr. Andonuts is another major one, since his presence alone also spoils the plot's direct connection with EarthBound (1994)'s, in case the Inconsistent Dub hindered the player from recognizing Porky.

    N 
  • The New Order Last Days Of Europe has multiple faction and character-specific examples:
    • It's really hard to discuss Reinhard Heydrich without mentioning the fact that he tries to overthrow Himmler thus causing a civil war within the SS, which has major implications for what happens next in Germany.
    • Both the Armeeverband "Fries Europa"/Reichsbanner Schwarz-Rot-Gold and the Deutsches Frieskorps spoil a major twist in the Speer path, namely what path that Germany will take after a massive slave revolt by anti-Nazi Germans and western Slavic rebels.
    • The Holy Russian Empire is very difficult to mention without discussing the fact they collapse after their ruler Sergey Taboritsky dies with his goal of bringing the Burgundian System to Russia unaccomplished.
  • Nuclear Throne features the titular throne itself, which is the MacGuffin the mutants are searching for. The twist is that the Throne is not controlled by the skeleton sitting on it, but is in fact a sentient object which serves as the game's Final Boss. The Throne II fight brings in even more spoilers, as it reveals that the Throne is some sort of Eldritch Abomination and may be related to the purple portals that you've been using for the entire game.

    O 
  • Octopath Traveler: Most of the Arc Villains of the protagonists' stories are Walking Spoilers.
  • Octopath Traveler II has a couple examples as well.
    • It's very difficult to talk about Malaya without revealing the fate of Eir's Apothecaries and how Castti lost her memories in the first place. She committed a Heroic Sacrifice to save Castti after the rest of their group perished from Trousseau's poisoned rain; this saved Castti's life, but gave her a case of amnesia in the process. This means that the Malaya whom Castti interacts with during her journey is a hallucination Castti invented to help herself recover her memories.
    • Mindt is also hard to discuss for much the same reason as Lyblac above. She seems like a kind and friendly cleric at first glance who shows up during a couple of Temenos's chapters. However, she's secretly Arcanette, the leader of the Moonshade Order, a nihilistic world-ending cult out to give Solistia over to Vide. This is also the true reason why the pontiff was killed in Temenos's first chapter, because he suspected something was up with her.
    • The boss of Osvald's fourth chapter, the Grieving Golem, is nearly impossible to talk about without revealing what actually happened to Osvald's family. Harvey didn't actually kill Rita and Elena, and he used Rita's blood to create the Grieving Golem. Osvald initially thinks it is his wife until he realizes it isn't after the battle's over.
  • OMORI:
    • Omori himself can't be discussed as a character without revealing that he's a Decoy Protagonist, and discussing him in length can't be done without revealing that there's more to him than just being Sunny's Headspace counterpart.
    • Everyone in Faraway Town is a case of this trope, as knowing of their existence spoils the First-Episode Twist that Headspace is actually a Dream Land created from Sunny's imagination. For some particular characters:
      • Knowing of Sunny existence spoils the reveal that Omori is a Decoy Protagonist. Furthermore, discussing details like why he's a hikikomori in the first place requires discussing the game's major twists.
      • The real world Aubrey is a case of this. While all of Sunny's other friends prove to be relatively similar to their Headspace counterparts, it's something of a major early-game surprise when Aubrey shows up and it's revealed that the grumpy yet kindhearted girl the player has gotten to know in Headspace has grown up to become a cynical and violent delinquent.
      • The real world Mari can't be discussed whatsoever, as doing that would spoil the reveal that she's been Dead All Along, with said death setting up the main crux of the game's plot. Furthermore, how she died is the game's biggest twist, making it impossible to discuss that aspect of her without spoiling a major part of the game.
    • A minor example of this trope comes in the form of Captain Spaceboy. He's a fairly minor character to the game's story, so there's not much to discuss about his character without talking about the surprise Optional Boss against him as Captain Space Ex-Husband in the Hikikomori route.
    • Abbi's entire existence is a case of this trope, given that she's a Giant Space Flea Out Of Nowhere Superboss who only appears in the Hikikomori route. Knowing of her also requires knowing of the existence of the Abyss and Black Space.
    • The Others aren't relevant to the game's plot, but knowing of their existence spoils the existence of Black Space, which in turn spoils the truth behind Omori and Something.
  • Onmyōji has Kuro Seimei. It's pretty much a spoiler to mention that this guy exists in the first place without also revealing his inherent connection to Seimei. He's never mentioned in any of the game's promo material, and Noriaki Sugiyama is only ever credited as voicing Abe no Seimei and nobody else in these materials.
    • And then there is Yamata-no-orochi. Sure, you can talk about him as the Piñata Enemy in the mitama dungeons, but mentioning any of his involvements with the plot reveals his being an even bigger threat than Kuro Seimei, Yaobikuni's working for him all along and the Sword of Kusanagi's being a Chekhov's Gun necessary to destroy him once and for all.
    • If you try to talk about Kairaishi's role in the story, you'll find that there's nothing much to speak of besides the fact that she has a Kusanagi fragment in her chest.
  • Outer Wilds: The Driving Question of the Echoes of the Eye DLC is "What is inside that mysterious vault, and why was it sealed away?" Thus, merely stating that The Prisoner exists already spoils the first part of the question, and discussing any of their actions spoils the second part.

    P 
  • Vernon Locke in PAYDAY 2, a cyber hacker sent by Murkywater to cripple Crime.net, but instead offers jobs to Bain and his crew instead, stealing from his former employer. He becomes a walking spoiler when the story gets more serious in 2017, and his role as contractor gets an upgrade to replace Bain after he was kidnapped by the Kataru. After the events of "Alaskan Deal" and especially after Day 1 the Reservoir Dogs heist, pretty much all of his actions are spoileriffic to some degree. His entry on the contractor character page used to be mostly spoiler-free before 2017, but now it's pretty much all redacted in spoiler tags due to how deeply woven he is in later events.
  • Perfect Vermin's story is ultimately focused on the news reporter. Most of the game's tropes revolve around him in some way, and the fact that The Ending Changes Everything when it's revealed he is dying from cancer as a result of his smoking addiction makes most of the game's tropes a spoiler.
  • Persona:
    • Maki Sonomura, the deuteragonist of Persona, is rather hard to talk about without spoiling some of the game's major reveals, such as the fact that the Maki the team spends most of their time with is, in fact, not the real Maki at all.
    • The supposed Big Bad of Persona 2: Innocent Sin, Joker, can't be discussed without revealing he's actually the heroes' childhood friend, Jun Kurosu, who ends up pulling a Heel–Face Turn and becomes the team's final party member.
    • Persona 3:
      • Shuji Ikutsuki is initially introduced as the Big Good, being the founder of S.E.E.S. That is, until near the end of the game, where it's revealed he's actually been tricking the team into killing the Shadows to cause the Fall.
      • Ryoji Mochizuki initially seems like just another transfer student, but in reality, not only is he a reincarnation of Pharos, he's also Death, the final of the thirteen Shadows. Talking about him also spoils that the game doesn't end after you kill the Hanged Man, the last of the Full Moon Shadows.
      • From The Answer, the Playable Epilogue added in FES, there's Erebus. Not only does even knowing of its existence spoil several major twists of the main game, including the existence of the Fall and the protagonist's death at the end of the game, but it also reveals that Nyx is not actually evil at all.
    • From the non-canon anime spin-off, Persona -trinity soul-, there's Ayane Komatsubara, as knowing of her mere existence pretty much spoils the entire story of the anime.
    • Pretty much every major antagonist of Persona 4 is one of these:
      • Mitsuo Kubo is initially introduced as a minor character near the beginning of the game, so saying anything about him beyond that spoils him murdering Mr. Morooka, as well as the fact that he's actually a Copycat Killer for the real killer.
      • Taro Namatame is only properly introduced near the start of the game's third act, so saying anything about him not only spoils the reveal that he's the one who's been kidnapping people, but also reveals that he's actually a Obliviously Evil Anti-Villain who's being manipulated by the real killer.
      • And of course, there's the true culprit behind the murders, whose true identity is the driving question behind the game's conflict, Tohru Adachi. The fact that the partner detective of Yu's uncle, and (in Golden) a Social Link character, is the true Big Bad of the story, is a pretty staggering reveal, to the point that the amount of tropes that comes with this revelation warranted that he got his own trope page with all spoilers unmarked.
      • Ameno-sagiri, whose existence as the source of the fog that plagues the TV World, is a major spoiler. They get even harder to talk about with the reveal that they're actually just a piece of the game's true Greater-Scope Villain, Izanami.
      • Kusumi-no-Okami, the true identity of Marie, is a major spoiler, as their existence not only reveals the truth behind a character whose backstory is a mystery even to them, but also foreshadows the existence of the Greater-Scope Villain.
      • Finally, there's the Greater-Scope Villain, Izanami. She's initially introduced as a nameless gas station attendant at the very beginning of the game, but her characterization is so minor that the player is likely to have forgotten about her completely. The fact that Izanami turns out to be The Man Behind the Man Behind The Man Behind The Man Behind The Man that was responsible for just about everything that had happened up until that point makes her the biggest case of this trope in the game.
    • Persona Q: Shadow of the Labyrinth:
      • Shadow Rei is this, as saying anything about her or what she represents spoils the truth about Rei, the labyrinths, and what they represent to her.
      • The game's Big Bad, Chronos, is this, as they are the culmination of everything the plot is building towards, so knowing about them spoils many of the reveals in the game.
    • Persona 5:
      • Morgana spends most of the game with amnesia, so knowing he's actually the manifestation of mankind's hope is a major spoiler for the game's third act.
      • Downplayed with Haru Okumura. The character is not so much a spoiler, as she was advertised before release and appears on the cover and intro movie. What makes her this trope is her connection to her father, Kunikazu Okumura, as his death, a major twist that happens just prior to the plot catching up to the interrogation, profoundly affects her and informs the majority of her character development, including her entire Confidant, the final one to open up in both versions of the game.
      • Goro Akechi. He's initially introduced as a detective investigating the Phantom Thieves, until he joins the party (which, unlike with the other Thieves, was not officially publicized before the game's release). He turns out to be the traitor in the party that was mentioned at the start of the game, the "Black Mask" Persona user who killed Futaba's mother and Haru's father, a Wild Card user like the protagonist, and the illegitimate son of Masayoshi Shido. In fact, he's not even loyal to anyone other than his self-professed agenda, since he wanted to betray Shido once he is off guard. Gets even worse with Royal's Third Semester arc, with the fact that he's even involved in the plot at all spoils that he survived his supposed death (sort of) in Shido's Palace and rejoins the Phantom Thieves, on top of all the other reveals mentioned.
      • Kasumi Yoshizawa from Royal is this. As in, both the real and fake one. Kasumi is a side character for most of the game, and doesn't receive much major characterization up until the Third Semester arc, meaning talking about her is rather hard without revealing that not only is the Kasumi the player knows is actually Sumire Yoshizawa, who's been brainwashed into believing she's actually her sister Kasumi, whose mere existence spoils the reveal that she's actually been dead since before the game began.
      • Lavenza, who's the true avatar of power in this game, and a fusion of Justine and Caroline. Discussing her spoils several plot twists, such as why she was split in two. However, she becomes a Late-Arrival Spoiler in Strikers where she's the Velvet Room attendant from the very start.
      • Shadow Mishima. While most Confidants require the Phantom Thieves to change the heart of someone in order to help that Confidant, the fact that Mishima has himself as the target ends up being a major spoiler for his character arc.
      • Kunikazu Okumura, in a similar vein to his above mentioned daughter, is relatively difficult to talk about them without revealing that after his heart is stolen, The Conspiracy kills him to keep him quiet and frame the Phantom Thieves for his murder, which also profoundly impacts Haru.
      • Shadow Sae. With Sae having a major role in the story as Joker's interrogator in the game's Framing Device, it is rather surprising to learn that she was a target of the Phantom Thieves, let alone the owner of the Casino Palace from the game's opening.
      • The identity of the owner of the Third Semester arc's Palace from Royal is this, due to the reveal that it's actually your high school counselor and Confidant Takuto Maruki, which puts everything he's done up to that point in a new light.
      • Rumi from Royal, as knowing anything about her spoils the truth behind Maruki's true motivations.
      • Igor, of all characters, is this for this game. As in, the real Igor, whose appearance in the game's climax can't be discussed without spoiling the reveal that the Igor the player has been talking to this entire time is actually the game's Greater-Scope Villain, Yaldabaoth.
    • All of the original characters of Persona Q2: New Cinema Labyrinth, including everything inside the movie Labyrinths, are giant Walking Spoilers whose true identity will not be revealed until the endgame. However, unlike Q, you can see that Hikari looks really messed up, and Nagi and Doe are suspicious from the beginning.
    • Kuon Ishinose from Persona 5 Strikers, as while she weaves in and out of the plot from Sendai onwards, it isn't until near the climax where she receives major development with the reveal that she's the creator of both EMMA and Sophia, and the true instigator behind the game's plot.
      • Every Monarch after Sapporo is also one to some extent, starting with Shuzo Ubukata, who's been dead for months before the team arrives in Okinawa, and whose Jail starts to reveal EMMA's true purpose and why the Jails exist to begin with.
      • Akane Hasegawa, Zencichi's daughter, on account of not actually having a Jail when we first meet her, as well as revealing Zenkichi's backstory and motivations regarding getting revenge on Owada for killing his wife, Owada having been part of the Antisocial Force from the previous game, and Zenkichi not being able to get justice for his deceased wife due to Shido's and Yaldabaoth's meddling.
      • Akira Konoe, the (apparent) true instigator of the plot. He's established as Maddice's CEO early on promoting EMMA, but it isn't until later that he's shown collaborating with Owada and using the Jail function to control the populace. Then it's revealed he plans on disposing of Owada once he's no longer needed for his twisted plan on bringing peace to Japanese society by becoming the sole enforcer of justice. Finally, we learn his motives: he had a nightmarishly abusive childhood where he was beaten by his dad, who also killed his wife/Akira's mother for money, got away with his crimes on account of his being Maddice's CEO at the time, and almost killed Akria before the latter killed him in self-defense. The experience traumatized Akira, leading him to embark on his crusade to ensure no one suffers the way he did.
    • Persona 5 Tactica has a large number of spoiler characters, most of which are related to the Kingdoms' true purpose:
      • Erina, the leader of the Rebel Corp, is difficult to discuss in detail without spoiling that she's Toshiro's disembodied Persona Ernesto, taking a form resembling his old high school friend Eri Natsuhara.
      • Yuki, the tea shop owner who helps the team out in Yoshiki's kingdom, is revealed to be a cognition of Toshiro's mother, Yuki Kasukabe, who died when he was a child due to her illness while out on a trip to the amusement park, and whose death influenced much of Yoshiki's actions.
      • Every character introduced in the School kingdom, including Nakabachi (the corrupt music teacher who became mad after Toshiro and Eri exposed his crimes to the student body, and who we're initially led to believe is the kingdom's ruler), Eri (whose appearance inspired Erina and who is suggested to die after getting pushed in the way of a train by a now-insane Nakabachi, only for The Stinger to reveal she survived, albeit with life-altering injuries), and Shadow Toshiro (the true ruler and boss of the kingdom).
      • Finally, the Big Bad himself, Salmael. He comes out of nowhere after the team beats Shadow Toshiro and reveals that he created the kingdoms in order to mentally break Toshiro so that he couldn't stir up the masses as prime minister, something he considered a threat to Japan. Later, during his boss fight, his mask breaks to reveal his true face, and he drops all pretense of civility and Condescending Compassion, showing his true colors as an Ax-Crazy psychopath hell-bent on killing everyone.
  • Iovara from Pillars of Eternity. She reveals that the gods are artificial constructs, and that there is no deeper meaning to the universe, the cycle of death and resurrection, et cetera. It was for revealing all this that Iovara was tortured to death and her soul imprisoned by those who believed the gods were the only way to ensure peace and stability in the world. She takes the world's meaninglessness well, but the player character has a number of options to deal with the revelation, including deciding These Are Things Man Was Not Meant to Know and telling nobody else.
  • Pizza Tower:
  • The Judge in Poacher. He's present from the beginning as the game's narrator, but knowing his name, let alone who he really is, is a massive spoiler for the secret ending.
  • Pokémon:
    • Red, the protagonist of Pokémon Red and Blue, is this in almost every other game he appears in, being the True Final Boss of Pokémon Gold and Silver, and a Super Boss in Pokémon Sun and Moon.
    • In Pokémon Black and White, N, a recurring NPC who reveals himself as the "king" of the antagonistic Team Plasma, has one of the largest character pages of any character in the Pokémon games. It is at least 50% spoilered. Ghetsis (the actual leader of Team Plasma) is even more so, with at least 65% of his page spoilered before Pokémon Black 2 and White 2 came out.
    • Pokémon X and Y brings us Lysandre and AZ. While the game makes few attempts to hide the fact that Lysandre is the leader of Team Flare, it does drop a bombshell regarding AZ being a 3,000 year old immortal former king of the country the game takes place on who built the Ultimate Weapon that Team Flare has spent the entire game trying to activate.
    • Pokémon Sun and Moon:
      • Cosmog is nigh-on impossible to discuss without spoiling that it ultimately evolves into the games' flagship Legendary Pokémon, Solgaleo or Lunala. Bear in mind that all prior Legendaries were single-stage Pokémon that didn't evolve, making the twist even more shocking.
      • It's nearly impossible to talk about Lusamine without spoiling that she's the Big Bad of Sun and Moon or her changed role and true personality in Ultra Sun and Ultra Moon.
      • Talking about UB-01 is a little spoilerific, as it's the center and cause of Lusamine's obsession and madness. For that matter, the Ultra Beasts in general are presented as being wholly different species from Pokémon, so it's something of a spoiler to say that they're still catchable Pokémon with proper names.
    • Originally an Optional Boss that had little rhyme or reason to it, Pokémon Ultra Sun and Ultra Moon makes Necrozma into the first non-human Big Bad, with its backstory and strange appearance being explained. There's also the manner of its unique Ultra Burst technique; something never alluded to until the final confrontation with it, and a major revelation into Necrozma's true nature.
    • Pokémon Sword and Shield:
      • Eternatus, the very existence of which provides the bulk of Rose's motivations.
      • You can't talk about Piers without mentioning that he's also the leader of Team Yell and has basically been Astroturfing his younger sister Marnie the entire game.
      • Sordward and Shielbert, who aren't even hinted at until the postgame, and whose actions eventually lead to you and Hop capturing the box legendaries.
    • Pokémon Legends: Arceus:
      • Ingo is this simply because he appears in the game, which is set in the distant past.
      • Beni at first appears to be a simple storekeeper, but is actually a ninja as well as Kamodo's right-hand man.
      • The biggest spoiler is Volo, as he is revealed to be the Big Bad behind everything in the story and collaberated with Giratina, whom wanted revenge on Arceus for banishing it.
    • Pokémon Scarlet and Violet:
      • Penny, who is merely introduced as a shy student at the academy, turns out to be the secret leader of Team Star. And she's the one directing the player to take down her organization because it was no longer the anti-bully alliance she created.
      • The regional professors of Paldea, Sada and Turo have been Dead All Along. The player has been only interacting with their robot copies, and the original professors turned out to be responsible for creating a time machine that brings in Pokémon from other time periods (called Paradox Pokémon who, like the Ultra Beasts, are spoileriffic of their own right) into the present-day ecosystem not suited to handle them, and the robot copies wants the player to stop it.
    • Pokémon XD: Gale of Darkness has Mr. Verich and his bodyguards. Like Es Cade, Mr. Verich only makes a very brief appearance near the beginning, where one of the bodyguards saves you from Zook and his Shadow Zangoose, before pretty much disappearing until near the endgame (though his second bodyguard makes another brief appearance durring your first visit to Mt. Battle). Then, after you've shut down Cipher's main Shadow Pokemon factory and defeated its foreman, Cipher Admin Gorigan, Mr. Verich calls in and reveals that he's actually Grevil, the Grand Master of Cipher, above even Evice from the first game. There's also the twist in the ending that the bodyguards are actually Grevil's sons.
    • Blake Hall, the president of Altru Inc., in Pokémon Ranger: Shadows of Almia is this, as he turns out to be the leader of Team Dim Sun.
    • Purple Eyes from Pokémon Ranger: Guardian Signs. He comes in after the supposed ending as the new leader, and directly leads into the next villain. Also, all members of the Societea.
    • Darkrai from the second set of Pokémon Mystery Dungeon games is an example of The Man Behind the Man who appears after you think the story is over, stating that they intentionally gave the protagonist amnesia of their past to try and stop them from fixing a future filled with nightmares.
      • From the same game(s), Grovyle and Dusknoir. Neither is what they appear to be at first glance (the former is seen as a criminal that turns out to be working to save the future, the latter appears to be hunting Grovyle for noble reasons but is in fact aligned with the corrupted Dialga), and spoiling Grovyle's identity also carries major reveals for the player character with it.
    • Hydreigon and Munna in Pokémon Mystery Dungeon: Gates to Infinity. The former appears to be Obviously Evil initially, but turns out to be the Big Good, while the latter appears to be a Damsel in Distress, but ends up being a Decoy Damsel who's plotting to eliminate the hero.
      • The Bittercold, being an Eldritch Abomination that's a manifestation of the Pokemon world's misery, the true Big Bad of the plot, and the motive behind Kyurem and Munna's actions.
    • Bringing up Nuzleaf in Pokémon Super Mystery Dungeon can easily spoil most of the game considering his status as The Mole thanks to Dark Matter, who due to being an Outside-Context Problem similar to Bittercold, is also a walking spoiler.
      • Talking about Mew will inevitably spoil his status as a replacement for the partner character and the ending's Meta Twist.
    • Pokémon fan games:
      • Pokémon Insurgence has the "Giratina Cult", a group of beings from the Distortion World that are the Greater-Scope Villain of the game and responsible for the cults in Torren, their goal being for Giratina to be returned to its rightful place.
      • Pokémon Uranium has CURIE, whose existence is unknown until after the eighth Gym. She happens to possess Urayne and is the Big Bad, the Final Boss, and the player character's thought-to-be-deceased mother Lucille.
  • Just about every character aside from the six main animatronics in POPGOES has a secret to hide. Special mention goes to Strings, one of the other animatronics, who is actually the playable character.
  • Wheatley turning out to be an antagonist in Portal 2 is meant to be a big twist. Thus, spoilers. Everywhere.
    • Cave Johnson being a character in the game, albeit posthumously, as he is only "present" in the ruins of the old Aperture labs that are the setting for the second Act. Which for extra points are only visited after aforementioned Wheatley becomes the antagonist.
    • Similarly, it's hard to talk about Caroline without revealing that GLaDOS is the result of the aforementioned Cave Johnson uploading her into the database without her consent.
  • Professor Layton
    • Clive, from Professor Layton and the Unwound Future. AKA, Future Luke. It's difficult to talk about Clive's real personality without spoiling the time travel disaster from 10 years ago, or the fact that one of your traveling companions is the Big Bad.
    • Dimitri Allen AKA, Dr. Alain Stahngun and Future Layton also counts, especially given his ties to the backstory.
    • From Professor Layton and the Miracle Mask we have Randall Ascot, AKA The Masked Gentleman. Referring to him by name reveals that Randall actually didn't die in the backstory. Though, the amount of buildup they give the character in his backstory, it's almost impossible to not see that twist coming.
    • From Professor Layton and the Azran Legacy, there's Leon Bronev, who is not only the Big Bad, but Layton and Descole's father, Emmy's Honorary Uncle and boss, and a somewhat more sympathetic character than he initially seems.
  • Project Altered Beast has Anastasia, a Mysterious Waif who appears to help the hero, but is actually the responsible for the whole mess that brought him into the game's setting in the first place (as she wants to kill him, and everyone related to the Project), and even serves as the Final Boss.
  • Project × Zone: Meden Traore definitely counts and the Portal Stone by extension. He is the leader of the Oros Phlox Organization that keeps hounding you throughout the game, and until he actually appears halfway through the game we're led to believe that Due Flabellum (who turns out to be his wife) is the leader. His goal is to merge all worlds into one world to make it all a better place then they were individually, completely messing with the boundaries of time, space, life, and death to accomplish this. He's also the Final Boss in the game, opening the intro movie tells you that much once you recognize him. And the kicker is that he and the rest of the Oros Phlox are the manifested will of the Portal Stone itself, making the very artifact thought to be stolen from Mii's mansion the Big Bad pulling the strings from behind the scenes the entire time.
  • Puyo Puyo:
    • In Puyo Puyo Chronicle, Rafisol's role as the game's villain is a big spoiler in itself, as she appears very late into the game with little-to-no foreshadowing prior.
    • In Puyo Puyo Tetris 2, Squares is inherently a spoiler since he is the one who controlled Marle, his creator, into gathering power and wants to unmerge the Puyo Puyo and Tetris worlds to maintain order. Until his introduction, Marle is thought to be the cause of the game's conflict.

    R 
  • Rabi-Ribi: The existence of Noah, the Big Bad of the game and the Final Boss happens to be just one of the spoilers surrounding her. There's also Irisu, who turns out to be another Big Bad (albeit not evil) who founded the UPRPRC in an attempt to make Erina hers.
  • Ratchet & Clank:
  • Although Rayman Origins isn't very concerned with having a plot, it's still difficult to read about the Magician without spoiling the character's significance to the game, as well as its biggest twist. Rayman Legends makes it even more difficult since it assumes you know what his deal is by then.
  • The 16th playable character in The Reconstruction, Tezkhra, is first heard of as the god worshiped by certain groups of shra.
  • The Phoenix MkII from RefleX is a main protagonist example with the majority of its tropes being of spoiler nature. At first, it seems like a simple Cool Ship with an Attack Reflector and an anonymous pilot, but after it is severely damaged and its pilot killed about 7/8ths into the game, its true nature, unbeknownst to even the pilot, unfolds: the Phoenix is in fact a vessel for the ZODIAC Ophiuchus's core, which has been a major target for the Raiwat army for centuries. The Ophiuchus then causes the destruction of the other 12 ZODIAC units, making the Raiwat retreat out of fear but causing the destruction of a horrifying percentage of Earth and its population in the process. ZODIAC Ophiuchus then makes its Heroic Sacrifice and seals itself along with the other 12 ZODIAC cores...only to be revived in the previous (in release order) game KAMUI as the "Super KAMUI" fighter that serves as the Area 4 boss.
  • Return Of The Obra Dinn might boast the highest percentage of walking spoilers in history, by nature of a game where the entire challenge is matching a character's appearance with their name and job. Not to mention most of the characters are either murderers, murder victims, or die in a manner that is a spoiler for the larger plot. Describe literally any character in the game, aside from the Featureless Protagonist, and chances are you've tripped on at least three spoilers. The character page had to be made spoilers off by necessity, because any image or trope added to any character's folder is itself already a spoiler.
  • Rhythm Thief & the Emperor's Treasure
    • The only thing not a spoiler about Jean-François is that he takes care of Marie at the convent where she lives. He doesn't take any active role in the story until he assists Leonard at the Eiffel Tower as The Dragon by shooting Phantom R in the foot, taking the protagonist out of commission for a while. Jean-François then shows that he is the "Graf" that Inspector Vergier had been trying to find for several years and that he has the royal blood needed to unearth a superweapon beneath Paris, albeit missing some other necessary ingredients. This new information about him also puts his encounter with Elizabeth in a new light: Elizabeth denied being Marie's mother not because she isn't, but because Elizabeth knew what Jean-François was up to.
    • Leonard Bonar himself, as he shows up right at Chapter 1, passing himself off as a resurrected Napoléon Bonaparte until Phantom R finally defeats him in Chapter 9, when he admits he's a fake. This reveal then sets up subsequent reveals that the real Napoleon is The Man Behind the Man and that Raphael's father Isaac may be a more powerful figure in this conspiracy than was previously thought.
  • Richman 8:
    • It's hard to talk about James without mentioning that he end up killed (and revived) by an alien, and as the alien used eels to revive him, he can turn into a superhero by eating canned eels.
    • When it comes to King Octopus, it's hard not to mention thathe is actually the host (and some of the NPC you encountered who wears the same monocle as the host,) and the tournament is all his idea to find the Lucky Star, a diamond that let him scam many kings' riches with among the contestants.
    • The monster also plays a literal huge role in Story Mode instead of just using to wrecking properties: he's from the glacier, and Ninja's accidentally summoning is what makes Igloo to join th tournament in the first place, and he later joins the circus with Kimchi upon Xiaomei's request.
  • Iris Zeppelin from RosenkreuzStilette, for being an Omnicidal Maniac and the true Big Bad of both games instead of the innocent girl she first appeared to be.
  • Rule of Rose: Despite the game's All Just a Dream Mind Screw-y nature, one thing is for certain: avoiding spoilers is near-impossible when discussing Wendy, Joshua or Gregory in any kind of depth.
  • RuneScape
    • How do you describe Wizard Grayzag without giving away that he Took a Level in Badass, killed a bunch of Void Knights and becomes the Big Bad for the quest series?
    • Kharshai's entire character pretty much bases on the fact that he is actually in disguise as Koschei the Deathless.

    S 
  • All the player characters other than Max, the main character, in Sanitarium are hard to talk about because they're actually forms/alternate personalities that Max shapeshifts into.
  • For Scratches, the fact that Robin is still alive and in the mansion is the biggest Plot Twist of the game.
  • Shadow Hearts:
    • Yuri's mother serves as this not in the first Shadow Hearts game (where she just serves as a Death by Origin Story), but in Covenant instead, because in the latter game she's revealed to be the playable character Karin Koenig, who is German instead of being a Russian as previously presented.
    • Albert Simon is impossible to describe without bringing up the fact that he pretended to be the recurring character Roger Bacon for half the first game. Or that his villainy in the first Shadow Hearts game was an effort to snuff out several other villains only introduced in the second game.
  • Shin Megami Tensei:
    • Shin Megami Tensei II:
      • Zayin is advertised alongside Aleph, Beth, Gimmel, and Daleth as a major character. The twist is that, of those characters excluding Aleph, Zayin is the only one who actually stays as a major force throughout the game. He ultimately becomes a Big Bad in his own right and is the direct leader of the Law faction in God's name. Furthermore, he is actually Satan, and he redeems himself on the Law route.
      • The Center Elders are actually the Archangels. Gabriel is a decent person, but Michael, Raphael, and Uriel are far worse than they were in the last game and are the main antagonists for a good portion of the game, at least until Aleph and Hiroko kill them.
      • YHVH, the Greater-Scope Villain for Law, is the Final Boss and final antagonist of the game. This one, against all odds, fell into It Was His Sled category, to the point where it's the first thing people generally find out about the game.
    • Shin Megami Tensei III: Nocturne:
      • Hikawa, Isamu, and Chiaki's One-Winged Angel forms Ahriman, Noah, and Baal Avatar respectively who are, in their separate fights, all the penultimate bosses of the game. This is especially true for the latter two, who assume these forms as the end result of going crazy due to their experiences.
      • The child serial killer and the failed businessman you can find in the Labyrinth of Amala are near-impossible to bring up without spoiling that they are Futomimi and Sakahagi, respectively, both of which died earlier in the game.
    • Shin Megami Tensei: Strange Journey:
      • The Three Wise Men are the leaders of the Law faction. There's not much else to them, but they end up being defined by this. In Redux, not only are they revealed to be the true originators of Mem Aleph's power, therefore being responsible for the whole of the game's plot, they are merely the separated forms of Root Shekinah, the game's take on YHVH, who recombine with the power of the Cosmic Eggs gathered throughout the game.
      • Mastema, rather than being a polite, caring angel, is actually a twisted, hate-filled, prejudiced monster. This is only revealed on the Chaos path, but his actions go as far as to disgust Lucifer.
      • Captain Jack and his subordinates seem to be affable folks looking to gather forma for a business client, offering their services if you obtain some rare forma for them. You later find out that they're some of the biggest monsters in the game, tearing apart demons and putting them back together in a crude attempt at demon fusion as experiments on behalf of said client and attempting to fuse your comrade Jimenez — also a human — with his pet demon.
      • Mem Aleph by virtue of Maia Ouroboros from three sectors before being presented like the final boss of the game.
    • Shin Megami Tensei IV:
      • The Black Samurai is Lilith. She, along with Tayama, is a major antagonist up until the White show up.
      • Tayama does not have Tokyo's best interests at heart and harvests brains from children and dissenters.
      • The White's existence is a spoiler, but their goals of omnicide and their despair are even worse.
      • Gabby, otherwise known as Gabriel, whose machinations throughout most of the game spoil the intentions of the Law faction. Knowing that she is Gabriel is itself a spoiler for that fact.
      • Hikaru, comparatively, is the game's form of Louis Cypher, which is a left-field spoiler that turns itself on its head when it comes to her real form.
      • Merkabah and Lucifer, the alignment leaders who physically appear after Johnathan and Walter perform separate Fusion Dances. Neither are brought up until the end of the game, yet they become the main antagonists.
      • Masakado is your greatest ally in the Neutral path and the presumed leader of the National Defense Divinities. He is also the last of the DLC bosses. He doesn't even appear at all or gets mentioned to on any non-Neutral path unless you buy and use his DLC.
      • Mastema isn't really Demoted to Extra, but rather, a figure that plays upon both the idea that he made a Heel–Face Turn and the idea that he hasn't changed a bit. He also sealed away the Archangels.
    • Shin Megami Tensei IV: Apocalypse:
      • Shesha grows sentient throughout the game and eventually impersonates Flynn from Tsukiji Konganji until after Merkabah and Lucifer's deaths, where he delivers the game's biggest Wham Episode.
      • Merkabah and Lucifer, again, are considered spoilers due to the fact that they are merely lesser halves of Satan, who has been perpetuating the Forever War between the Forces of Law and Chaos. Him becoming your ally (either through separating into the two characters below in the Bonds Route, or directly in the Massacre Route) for the final battle is even more of a spoiler.
      • YHVH is, once again, the Final Boss, again seeking to attain universal dominance through Satan's guiding of the war between Law and Chaos.
      • Jonathan and Walter return to help in the final battle with YHVH on the Bonds Route.
      • The Hero, Aleph, and the Demi-fiend return in the final DLC to fight against Stephen, who in turn turns out to be more powerful than YHVH.
      • The Great Will aka the Axiom, the ambiguous divine entity that's been alluded to many times throughout the series, is finally revealed in this game to be a Big Good to humanity, having created the messiahs Nanashi/Akira and Flynn/previous-summoner-of-Masakado to defeat YHVH, who is a rogue avatar of it.
    • Shin Megami Tensei V
      • Tao Isonokami is a friend and schoolmate of the main character who is strongly hinted to be much more important than she seems. She dies less than halfway through the game, but then comes back for the final act in her true form as a goddess of creation. It's very difficult to talk about her without spoiling this twist, so her character folder has all unmarked spoilers.
      • Hayao Koshimizu, the prime minister and head of Japan's Bethel branch, is actually the human form of Tsukuyomi, as well as the Chaos representative for this game(who eventually cuts ties with Bethel to realize his goals), two twists that inevitably tend to come up when discussing him.
      • A sidequest involves you finding Miman for Gustave(the shopkeeper), who gives you rewards for each one you find. They are actually humans who tried to become Nahobino before the Condemnation was lifted, something that is hinted at throughout the game but only explicitly revealed by one Miman you find in the final area of Da'at.
  • Shovel Knight:
    • The Enchantress, who's actually an evil spirit possessing the body of Shovel Knight's long lost friend, Shield Knight.
    • Directly tying into the above is Black Knight, whose true motive behind his loyalty to The Enchantress is protecting Shield Knight.
  • Silent Hill has Alessa Gillespie, whose existence and backstory are major spoilers for the setting of the first game and a major twist in third game, as well as being the ultimate cause of the series as a whole.
  • The Trinity in Skullgirls. As of the non canon storylines they haven't made an actual appearance in the game, other than an Early-Bird Cameo in the Gainax Ending/Cliffhanger ending upon beating Double's Storyline, which suggests that none of the storylines are canon, and that the True Ending turns out to be a Sequel Hook.
  • Neyla of Sly 2: Band of Thieves. She starts out as The Rival, but suddenly pulls a Face–Heel Turn on the main characters and frames her partner. She's soon revealed to be The Dragon to the game's Decoy Antagonist, but then betrays and KILLS him to steal the body of the first game's antagonist, revealing herself to be the second game's Big Bad. At the end of the game, she crushes Bentley with her beak, paralyzing his legs and causing Murray to cross the Despair Event Horizon, causing the game's Downer Ending.
  • Sonic the Hedgehog:
  • Soul Calibur V
    • The names of Alpha Patroklos and Pyrrha Omega give away that those characters will be getting alternate versions somewhere in the story.
    • Any discussion of Elysium will give away that the supposed ghost of Sophitia isn't what she appears.
  • Spec Ops: The Line
    • In a rare protagonist example, on the character sheet well over half of the character-specific tropes for Cpt. Martin Walker are spoiler-tagged out. For one thing, knowing that he's actually an unintentional Villain Protagonist massively changes how you view both the game and how you're playing it.
    • Col. John Konrad, since for starters, he's, well, not really a villain.
  • Spider-Man (PS4) has a major character who hasn't been featured in any of the trailers: Dr. Otto Octavius. Even though he appears in the beginning of the story, he's still a walking spoiler since it's not hard to deduce that he'll become Doctor Octopus simply because Otto's in the game. And that indeed happens by the start of the third act, as Doc Ock causes a breakout at the Raft and forms the Sinister Six, cementing his status as the game's Big Bad.
    • Another walking spoiler comes in the form of Harry Osborn. We don't see him throughout the game, as he claims to be in Europe during the story, but that proves to be a lie. He's Secretly Dying to a genetic disorder, the same one that killed his mother, and he's actually being stored in Norman Osborn's penthouse laboratory. What's more, when we do see him, he's in a healing tank... while surrounded by the Venom Symbiote!
  • Splatoon:
    • DJ Octavio, the Final Boss of the first two games, is an unusual example in that he's not a Walking Spoiler due to plot reasons (though he has a few surprises). Rather, his characterization and boss fight in the first game are so unique and fun that fans spent several months being very reluctant to give away details to unknowing players. None of what occurs during this fight is even hinted at, which adds on to the trope.
    • Judd the Cat is a straight example, as it is impossible to explain why there's a random cat living among these Apparently Human Merfolk and Funny Animal sea creatures without delving into the Backstory Horror of the Splatoon world, which is hidden in Story Breadcrumbs in the first game. This has since been downplayed, as future entries are pretty open about the games taking place After the End.
    • In Splatoon 2: Octo Expansion, when you first get to the Deepsea Metro, you're greeted by an antique telephone that hands you a device needed to navigate the Metro, complete a series of combat tests, and collect the four thangs, all under the guise of guiding you to "The Promised Land". You then never see this seemingly benign telephone again until you collect said four thangs and bring them to the phone, at which point the phone then uses them to form a giant blender and try to kill you and Cap'n Cuttlefish with it. You then learn that the phone is, in fact, Commander Tartar, a sentient A.I. that has been grinding up thousands of successful test subjects (such as yourself, the 10,008th attempter) in order to use their remains for a weapon of mass destruction to destroy all surface life and create a new master race.
    • Also from Splatoon 2 is Mr. Grizz, your enigmatic employer for the game's Salmon Run mode. In that game, his role is only that. In Splatoon 3... well, it's nigh-impossible to say anything beyond that without spoiling a good chunk of the story mode, as he ends up being an actual grizzly bear, the only survivor of the Ark Polaris, and is aiming to using the Golden Eggs that players have been collecting for him over the past five years as part of his plan to bring back mammals. Granted, most fans had already guessed those first two things and figured if those were true, he'd be involved in the plot to some extent based on actual name of said campaign, which was revealed a year prior.
    • Splatoon 3: Deep Cut were marketed like the idol groups of the past two games, but there's a big difference the trailers made no mention of: they're initially antagonists in Story Mode and make up most of its boss fights. Granted, it's over a misunderstanding and they eventually turn face, but it's still the first time an idol group hasn't been on the player's side. In Side Order, Marina had almost no presence in prerelease marketing despite being extremely prominent in the campaign itself (and despite her coworker/Implied Love Interest Pearl appearing) because of how closely tied she is to the plot and even setting; the Order Sector, where Side Order is set, is a cyberspace world Marina created to help restore memories to Sanitized Octarians like Acht.
  • In StarCraft II, the very fact that Samir Duran appears in the game at all, along with Alexei Stukov. Also the existence of Greater-Scope Villain Amon, since he has basically run the entire plot since Day 1, with the exception of the terrans.
  • In Stardew Valley, we have Krobus and the Dwarf. Seeing as they're meant to be secret characters that even have their own secret shops, simply mentioning their names can prove to be spoilers.
    • We also have Leo, Birdie, and Professor Snail who really can't be discussed without talking about the postgame-exclusive area that they appear in.
  • In Starsector, nothing can be said about the Omega, whether their ships, weapons, or even where they reside without spoiling a major surprise of space exploration.
    • Likewise, Project Ziggurat and Alpha Site play a major role in the main storyline, and anything about them is a spoiler for said storyline. Interestingly, this means that both of the game's examples of a true Boss Fight are spoilers.
  • Pretty much every character in Star Stealing Prince. Astra's not really a Damsel in Distress, Snowe's parents are not really dead, Snowe's parents aren't even the rightful rulers of the land, the rightful ruler was even worse than they were and they were pretty awful, and there's also the whole demon thing. Even the girl who appears in Snowe's dreams is not just a dream representation of Astra but a character in her own right, and you'd never guess that unless you went for the Bonus Dungeon.
  • Star Wars Legends:
    • Knights of the Old Republic: Revan being the Player Character is a major plot twist, causing the former Dark Lord of the Sith to become the main source of spoilers of the game. This makes the first sentence of the plot synopsis for the game on Wookieepedia (unless it has been changed by the time you read this) a huge spoiler for The Reveal more than halfway down the plot.
    • Knights of the Old Republic II: The Sith Lords: Kreia. She casually mentions early on she used to be a Sith Lord, and that's the least of the spoilers regarding her.
    • Star Wars: The Old Republic:
      • It's hard to mention much about Master Syo Bakarn without bringing up that he's a Child of the Emperor and the Jedi Consular's final boss.
      • Likewise, just try talking about the Jedi Knight's Token Evil Teammate Lord Scourge without using spoilers.
      • The Smuggler storyline has Darmas Pollaran, who is revealed later in the story to be an Imperial agent who has been manipulating the Smuggler to do the Voidwolf's bidding throughout their career as a Republic privateer.
      • It's difficult to discuss much about more than a few characters from the Imperial Agent storyline without spoiling the various plot twists, though the major example would be Darth Jadus, who turns out to be the Big Bad of the Agent story's Act 1.
      • With Revan and the Exile making final performances in the game, there are a couple of flashpoints that are nothing but spoiler tags.
  • Super Mario Bros.
    • Paper Mario 64 has Tubba Blubba's Heart. The heart was separated from the body and given sentience to make the main body invincible until you defeat the heart and it reunites with the body.
    • Super Mario Sunshine features the true identity of Shadow Mario, who goes on to become a recurring character in the series.
    • The very fact that the final boss of Mario & Luigi: Partners in Time is not Princess Shroob, but her older sister, and that the Cobalt Star Mario and Luigi spent the whole game assembling is actually her can, is a massive twist, making the Elder Princess Shroob a definite example.
    • Dimentio from Super Paper Mario is near impossible to talk about without revealing SOMETHING about his motives.
    • The Zeekeeper in Mario & Luigi: Dream Team. He's only ever encountered about three quarters of the way through the game, is the mystical deity of the island and completely subverts most expectations about how a god like figure is supposed to behave. And plays a major part in the ending.
    • Paper Mario: The Origami King has a few:
      • Bobby is hard to talk about without revealing his Heroic Sacrifice to free Olivia from underneath a large boulder near the start of the Yellow Streamer arc, making him an extremely rare on-screen death of a heroic character in a Mario game.
      • Extremely little can be said about the Origami Craftsman without spoiling that he created King Olly, reveals that Olly created Olivia (thus technically making him Olly's daughter rather than his sister), and that he was the original owner of each of the Legion of Stationary bosses before Olly trapped him in a wall, took off with them and gave then sentience.
      • The Stapler's existence is a spoiler since we're led to believe Scissors is the last of the Legion of Stationary, on top of being the real reason why Bowser and origami soldiers can't unfold themselves.
  • Super Smash Bros. Ultimate: World of Light gives us the Final Boss. No, not the one we meet at the start of the mode, we're talking about the other Final Boss.
  • You cannot go into a discussion in The Second Super Robot Wars Original Generation without mentioning that Arteil Steinbeck is really Euzeth Gozzo who is the same Big Bad from a different Super Robot Wars game. And it's not even an alternate universe version of him, it's really him thanks to Reincarnation from the Cross Gate Paradigm System. Sore mo watashi da indeed.
  • Syphon Filter 2 has Jason Chance, who was working for the Agency all along.

    T 
  • Innominat from Tales of Berseria, an enigmatic deity with several important plot-points connected to him. For starters, the Abbey, led by Artorius Collbrande, plan to use his power to remove humanity's ability to make their own decisions in order to purge the world of malevolence. What really makes Innominat this, however, is his identity: the reincarnation of Laphicet Crowe, Velvet's younger brother who was supposedly murdered by forced sacrifice by Artorius at the start of the game which drives Velvet's Roaring Rampage of Revenge, but is eventually revealed to have been a willing sacrifice because of his terminal disease.
  • Tales of the Abyss has a weirdly literal version with Asch. His powers as the "Light of the Sacred Flame" (or remnants thereof), his reasons for joining Van, his backstory, and even his physical appearance are all spoiler-tastic. Even seeing his face or hearing his incredibly familiar voice will probably tip you off to the game's first major plot twist: Luke is Asch's replica. Sync would count for the same reasons, but due to his dramatic voice differentiation from Ion and his signature mask, and due to the fact that his motivations aren't as plot-critical, it's much harder to pick up on.
    • Florian is yet another replica of Ion, as well as one who first appears after the Ion replica you know and initially assume to be the original is dead.
  • Tales of Destiny 2
    • It's hard to talk about Reala without mentioning she's an Artificial Human.
    • It's even harder to talk about anything to do with Judas and not mention Leon and the fact that he dies betraying the party, though the fact that they're one and the same (barring Character Development) isn't really meant to be a huge surprise to the player (Provided you've played Destiny).
  • Tales of Symphonia
    • Even if we ignore the fact that Kratos Aurion is the main character's father and that he was one of the legendary heroes, you still can't talk about his morality and motivation without spoiling something, be it that he was Evil All Along in the first part... or was actually Good All Along at the end.
    • Mithos Yggdrasill's name is a spoiler, since we're familiar with two Mithoses—a young boy directly, and an ancient legendary hero from hearsay—(who are actually the same one) and also another, seemingly older, character named Yggdrasill who is the Big Bad. Oh, and you're even allied with boy Mithos for a while.
    • Likewise, everything about Martel. The fact that she is not a goddess is just the beginning.
    • Completing the quartet of Precursor Heroes, it's impossible to go into detail about Yuan without revealing that he was one of Mithos's former companions and was almost Mithos's brother-in-law.
  • Tales of Vesperia: You can say very, very little about Captain Schwann without revealing that he's Raven. The game is also very careful not to show Schwann's face or have him speak for the same reason.
  • You can't talk about Emeraude from Tales of Graces without revealing that she's from another planet, goes crazy with power, inhabits a fake body and/or is directly responsible for Lambda's Start of Darkness. Lambda is even worse for this, since you have to explain that he's a Really 700 Years Old Omnicidal Maniac Energy Being inhabiting either Richard's brain or Asbel's, depending on the point in the story. As such, some aspects of Richard, like the Demonic Possession, also make him kind of hard to discuss.
  • In Tales of Xillia, Maxwell, the Lord of the Spirits is a huge spoiler — not just for the fact that he's the real McCoy and not Milla like she claims to be. He also sets the entirety of the game's plot into motion — he separated humanity into two groups: those who can cast spirit artes and those who can't; placed those two groups into the worlds of Rieze Maxia and Elympios, respectively; created a schism so that the two worlds never meet; and also created Milla, Muzét, and the Four Great Spirits as his pawns to ensure his status quo. When a group of Elympions (Exodus) decides to invade Rieze Maxia for its resources, he directly interferes and plans to exterminate Elympios and its people; until Jude, Milla, and their allies put a stop to his schemes.
    • Victor, Elle's father in Tales of Xillia 2. He initially is seen in one of the opening cutscenes, setting the game's story into motion by sending Elle away and is then seemingly shot dead by a mob of Clanspia agents, only to mysteriously recover and kill the whole lot of them. He's never seen or even mentioned again until late in the game when you travel to his alternate universe, finally meeting him in person and learning his name (Which is actually more of a title). Shortly after, the truth comes out that he's actually an older version of Ludger who gained the ultimate Corpse Shell by killing off all of the others who possessed the ability, but as a side-effect, has become a Time Factor and has little time left to live. He also happens to harbor one of the Guideposts of Canaan within him, which ultimately makes his death necessary, much to Elle's horror.
  • Team Fortress Comics (supplementary comics for Team Fortress 2):
    • Bill-Bel and Lar-Nah not only dig into the backstory of one of the nine mercenaries/classes, but their actions kickstart the Trauma Conga Line Miss Pauling's team goes through at the end of Blood in the Water and all throughout Old Wounds.
    • The fact that the mercenaries/classes from Team Fortress Classic play a big role in the story is already a huge twist, but their role in Old Wounds is what really drives the point home.
    • The Medic's supposed Face–Heel Turn was also a huge twist before Old Wounds came out, but said comic reveals that he still cares about his team.
  • Terranigma
    • Yomi is the little thing that was trapped inside Pandora's Box and basically serves as the mascot to Ark. Talking about it beyond that is impossible without revealing that Yomi was actually evil all along, and has wanted Ark dead for a portion of the game. He is not the Walking Spoiler. The one who is a walking spoiler is a second version of Yomi, which replaces the evil one at Ark's side for the final confrontation.
    • Dark Gaia cannot be talked about without revealing that there was even a villain wishing to pull a You Have Outlived Your Usefulness on Ark the whole time. He also spends the entire game until the final boss fight under the guise of the Elder of Crysta.
  • Gamall from Thief: Deadly Shadows once it's revealed she's been Dead All Along and the entity known as The Hag has been pretending to be her.
  • 13 Sentinels: Aegis Rim:
    • Chihiro Miura, Keitaro's younger sister who is seemingly kidnapped by Renya after Keitaro's prologue. The actual truth is much, much more complicated.
    • 426, a character who is initially believed in-universe to be the villainous alter ego of Ei Sekigahara, a hypothesis which turns out to be completely off the mark. He is in fact an AI housing the consciousness of Juro Izumi from two loops ago, and a Well-Intentioned Extremist trying to prepare the Sentinel pilots to face the Deimos. By extension, his disguises — Fluffy, Kyuta Shiba, and Erika Aiba — also fall into this.
    • Kengo Ogata only appears for one scene, but this scene cannot be talked about without giving away massive revelations about the game's backstory.
  • Three the Hard Way has Anderson, a travelling monk who joined the party seeking for new challenges. That latter claim is a lie, but saying anything about him beyond those facts is going to spoil many important plot points.
  • In Time Crisis II, Robert Baxter is a run-of-the-mill VSSE agent and the player 2 character. In Time Crisis 5, released over fifteen years later, he pulls a big-time Face–Heel Turn and becomes the Big Bad, something you don't learn until late into the game. This reveal is quite shocking for series veterans who bother to follow the Excuse Plots.
  • For Toadette Strikes, we have not a character, but a whole world as this. The world in question happens to be Subcon from Super Mario Bros. 2, except having gone to hell and falling apart due to the dream virus that Kammy Koopa has been using to put the Toads in eternal sleep.
  • Touken Ranbu gives us the other Yamanbagiri, the Secret Identity of the mysterious hooded figure debuting in the first Special Investigation event.
  • Pretty much every arc in Trails Series will feature several characters who become this. As a rule, the older the game is, the more characters initially included in this trope fall into Late-Arrival Spoilers and It Was His Sled territory.
    • Let's start with The Legend of Heroes: Trails in the Sky first:
      • Professor Alba is introduced as a travelling archeologist who, because of limited funding in his research, cannot afford to hire bracers' service to escort him through dangerous archeological sites. That's what you'll get if you want his information strictly under this name.
      • Renne. A seemingly innocent girl you meet in SC chapter 1 taking vacation with her family is revealed to be one of Ouroboros' Enforcers in chapter 3. It goes on from there.
    • Olivier Lenhelm. An extremely quirky minstrel from a foreign country. A great deal more is revealed about him starting late in SC.
      • Kevin Graham. A wandering priest of the Septian Church who is quite capable of defending himself from monsters and bandits. You find out a lot more about him later in The 3rd.
    • The Legend of Heroes: Trails from Zero also has quite a few:
      • Rixia Mao. Most of her tropes concerns the ending of Zero Chapter 2.
      • Wazy Hemisphere. He’s the young leader of the Testaments, one of two gangs fighting for dominance in Crossbell's Downtown area. Everything else about him is revealed in Azure.
      • KeA. Knowing about her pretty much spoils the entire Crossbell Arc.
      • Zeit. A rare species of wolf who joins the SSS of his own free will. You can't say much about him without revealing that he's one of the Sacred Beasts.
      • Joachim Guenter. Introduced as a friendly doctor at St. Ursula who occasionally skips out on work to fish. Turns out he's anything but: He's actually one of the few remaining members of the D∴G Cult, which kidnapped children and performed various painful experiments on them.
      • Ian Grimwood, Crossbell's public lawyer. He's presented as such a minor character that his role in the sequel is a huge twist: He's the one who murdered Lloyd's brother.
      • Mariabell, Elie's friend and daughter of president of IBC, actually comes from a family who has been trying to recreate Mirage Sept-Terrion who also founded the D∴G Cult. Their creation becomes a much-improved version on it and is stored in KeA. This practically makes her the one responsible for many characters' Dark and Troubled Pasts throughout the series as well as the many incidents that happen during the Crossbell arc.
    • The Legend of Heroes: Trails of Cold Steel has several, both from the first game and its sequels. It reaches the point where watching any trailer of the sequels will spoil almost the entire first game. This is also true for the third game's trailer.
    • From the first game:
      • Crow Armbrust. He's a student at Thors a year above Rean who loves gambling. And this is all you can say about him without mentioning his deeds throughout the story.
      • Vita Clotilde and Misty. Them being the same person is the least of it. Vita is presented as such a minor, irrelevant character that the fact she even is a Walking Spoiler is itself a huge spoiler.
      • Emma and Celine. It's clear there's something odd about Emma right from the start, but her and Celine's true purpose is only revealed at the very end of the game.
    • From the second game:
      • Rufus Albarea. Starts off as just Jusis' Aloof Big Brother, but he turns out to be central to the single biggest plot twist in a game already full of them. As this reveal puts all his previous actions in a totally new light, it's difficult to talk about him without spoiling anything. Even after all of this the third game still has another plot twist for him.
      • Giliath Osborne. You know you're one of these when you manage to derail the villains' plans simply by showing up.
    • The third game:
      • Ash Carbide. If you don't want to spoil anything, just say he's a delinquent-type student who gets transferred into Class VII.
      • The existence of another evil organization. It will be hard to explain the game's plot without mentioning Osborne, Ouroboros, Black Workshop and Vita to some extent. In fact, revealed members so far manage to become one. To list them:
      • Azure Siegfried. Without spoiling too much, they are a character who shouldn't exist by the second game.
      • Copper Georg. His actions in Cold Steel III affect the plot of the latter half of the game as a whole. The reveal of his true nature also marks this series' take to a much darker turn as what he does immediately after the reveal is shoot his former friend. This continues into Cold Steel IV where not everything is as it seems to be. He's such a walking spoiler that the Playstation 4 console itself will prevent any kind of recording scenes pertaining to him.
      • Black Alberich. It's hard to mention him without saying he's one of Class VII student's family member.

    U 
  • Under Night In-Birth: You're better off playing through Chronicle Mode before trying to figure out Vatista's deal, as any discussion about her that doesn't pertain to her personality or her basic objective as an Autonomic Nerve takes the "wham" out of its story's biggest Wham Episode.
  • Given the amount of Hidden Depths its characters have, almost all major Undertale characters have some massive spoilers, which it's barely possible not to mention, but the biggest offenders are:
    • Asgore, whose mere appearance is spoileriffic, let alone his personality and actions.
    • Both Asriel and the Fallen Child, who, just by existing, mark a turn for either the best or the worst.
      • Asriel, as it's hard not to talk about him without at the very least revealing he's Toriel's and Asgore's son. His appearance in Deltarune is also under this trope, although downplayed as as of chapter 1 it isn't very important to the plot unless you start on the Epileptic Trees.
    • Sans, for his role in the No Mercy route and the real reason for his laziness.
    • The Amalgamates (and by extension, the True Lab), for their existence being kept a secret (for good reason) and for being heavily involved in one of the characters' backstories and motives.
    • Flowey, due to his backstory, true identity, and the nature of his powers.
    • W.D. Gaster, who is only mentioned in the spoileriffic True Lab and is involved in a mystery so secret and enigmatic it's not even in the game. Then again, given his nature, one is extremely unlikely to learn about him without spoiling his existence for themselves unless they either have a field day with their save file or, in the updated version, get lucky with the Random Number God.
    • Even the player character is one. Not Frisk, but you — the twist is that the two are entirely separate entities.
    • The six human souls are instrumental to defeating the Neutral route's final boss. Problem is, that boss is built around trying to make you feel hopeless, so if you know how to beat him going in, the effect is ruined.
    • Let's put it this way: there's an entire page with no spoiler tags dedicated to the game's most spoilerrific characters.
    • Exaggerated in that the game itself is a Walking Spoiler. Undertale is infamously difficult to discuss without spoiling it, and it's also the sort of game best gone into blind. Some non-character-related things that are massive spoilers include:
      • The experience/leveling system is a Karma Meter in disguise.
      • Your character's soul would be the final one needed to break the barrier.
      • The naming screen does not name the player character (whose name is Frisk, this cannot be changed in-game). It instead names a character you meet at the very end of the Genocide route (and who is only mentioned in the backstory in orther routes), who will taint your game files as soon as you sell your SOUL to them. This character also plays an important part in Flowey's backstory, the former's actions causing the destruction of the latter's original incarnation, Asriel Dreemurr, who counts as a Walking Spoiler in his own right.

    V 
  • Valkyria Chronicles
    • For Valkyria Chronicles II, there's Dirk, one of the members of House Gassenarl (the villains of the game) and also the first Artificial Valkyrur. After the attack of Lanseal, he's revealed to actually be Leon Hardins, Avan's brother, who was said to have been killed during a secret mission.
    • There's also Baldren, another member of House Gassenarl, who is seen as The Dragon to his father Gilbert and serves as one of the bosses in the game alongside Dirk and Audrey. Then in September, after his father decides to give Gallia to The Federation and stop the Darscen purges, Baldren snaps, kills his father, takes over as leader of the Gallia Revolutionary Army, and during the game's climax, becomes the perfect Artificial Valkyria and the Final Boss.
    • Headmaster Laurence Kluivert is also this, when it turns out that he was part of the Asgardian Council, helped with Project Valhalla, which involved the research and creation of Artificial Valkyria, and is thus partially responsible for the loss of Leon Hardins' sanity/humanity and also the death of Juliana Everhart.
    • In the first game, there's a second character named Isara Gunther seen during the post-credits scene. She's Welkin and Alicia's daughter, spoiling that they get married and have a child together after the game's end.

    W 
  • In Wadanohara, the existence of the Dead Sea and its inhabitants in general is already this due to taking the game in a horror direction, but the biggest one is Sal, who is initially a very minor character before being revealed that he is a traitor and the villain behind the game's driving plot.
  • The Walking Dead:
    • People who play any season past the first will immediately know Lee's fate.
    • The mysterious Stranger, when finally revealed, is one huge spoiler since his life is ruined by your group. He questions all of your hard choices. The fact that he's an Anti-Villain instead of a Big Bad, makes him a walking spoiler.
    • Kenny in the Season 2 can count as one too, since his last appearance in Season 1 implied that he died.
    • The final battle of Episode 5 Season 2 is a massive spoiler, because it's a fight to the death and it happens between two of your allies; Kenny and Jane.
    • It's nearly impossible to talk about Final Season without mentioning Minerva. Firstly, she's stated to have been killed by walkers, then, it's revealed that she was given to raiders. Secondly, she's revealed to actually be alive. Thirdly, she's revealed to have killed her sister.
  • The Operators in Warframe are walking spoilers due to the role they play in the story. Additionally, players can become literal walking spoilers after completing "The War Within" quest by allowing them to play as the Operator mid-mission with players who haven't completed "The Second Dream" quest.
    • Excalibur Umbra's "Sunder" Helmet (which reveals what the Warframes actually are) will turn any player wearing it into a literal walking spoiler to anyone who looks too close without first completing "The Sacrifice" quest. The façade has cracked and you are beheld by the truth, indeed.
  • Beatrice from Wild ARMs 3. That small, purple-haired girl who occasionally pops up throughout the story? The Saint from Lamium's dreams? The reason Shane knows about Siegfried's return? That's all down to her. She's a dream demon manipulating just about everyone, including the protagonists, into doing her bidding- which means the creation of Nega-Filgaia for her to live in and rule over.
  • The Witch's House: Literally everyone in the game, due to its Cruel Twist Ending and Villain Protagonist status. Even the cat leads to immense spoilers.
  • Jergingha in The Wonderful 101, the leader of the GEATHJERK, goes un-mentioned until the fifth (of nine) chapter.
  • The World Ends with You
    • There isn't much you can say about Joshua without spoiling a plot twist. His status as your partner for the second week reveals that the game takes place over three weeks, each with its own partner. There's also the fact that he's the one who killed Neku, as well as the Composer, making him the true main antagonist.
    • Eri to an extent. If you describe her appearance, you end up describing Shiki, and revealing a major plot twist- Shiki lost her own appearance as her "entry fee" in the Reaper's Game.
  • NEO: The World Ends with You
    • The Ruinbringers' leader cannot be mentioned by name without spoiling the massive twist that the Ruinbringers are actually the Shinjuku Reapers Fixing the Game (and, by extension, the fact that Susukichi and Tsugumi are Reapers).
    • Kubo. He initially seems like just an enforcer for the Reapers, but there's much more to him than meets the eye, and none of it is explained until the final day — he's not even a Reaper, for one, but an Angel and The Man in Front of the Man responsible for Shiba becoming as villainous as he is.
  • World of Warcraft
    • Drakuru in Grizzly Peaks initially seems like just another questgiver, until you discover that he's collaborating with the Lich King against the Drakkari trolls. The latter part is why most people remember and talk about him.
    • Archbishop Benedictus initially seems to be nothing more than the leader of Stormwind's clergy, but it turns out that he's actually the Twilight Prophet, and one of Deathwing's highest-ranking followers.
    • Y'Shaarj is quite difficult to discuss without spoiling many of the plot twists in Mists of Pandaria. He is the Old God beneath Pandaria who is the source of the Sha, having been killed long ago by the Titans, and the Mantid were created to serve him. Garrosh obtains his heart and plans to use his power against the True Horde's enemies, devastating the Vale of Eternal Blossoms in the process.

    X 
  • Xenoblade Chronicles 1:
    • Fiora is by far the most spoiler-heavy character in the game, considering she was implied to have died a few hours in but got turned into a Robot Girl instead. That said, her trophy in Super Smash Bros. for Wii U and her later cameo in Project X Zone 2 have no such issues.
    • Metal Face's true identity is treated as a big reveal, as is Jade Face's.
    • Dickson claims that he's "full of surprises." He's not joking, especially during the Mechonis Core events, when he shoots Shulk and reveals himself as The Dragon and later a member of the extinct Giant race.
    • Describing Alvis as anything beyond "mysterious guy who teaches Shulk how to use the Monado" will reveal something big, mainly due to his actions after Mechonis Core and his role in the ending.
    • Zanza, who seemed to be a semi-important character introduced and swiftly killed off at the end of the Prison Island storyline. Turns out that technically wasn't even him, and not only is he the Big Bad and the Final Boss, but one of the two gods of the world and the Monado itself!
  • Xenoblade Chronicles 2:
    • Mythra's very existence is a spoiler, but she's a major character from the moment she's introduced. Though several trailers spoiled her presence. Not to mention that she’s a full-blown playable character in Super Smash Bros. Ultimate.
    • Nia is difficult to talk about not just in a story, but in a gameplay sense, as The Reveal partway through the game that she's a Flash Eater Blade radically changes how she works as a party member: from that point on she can be used as both a Driver and as a Healer-type Blade for Rex. More courteous online guides refer to her Blade form as some variation of "Rex's Spoiler Blade" or "Catalyst"note , but it's still difficult to talk about her drawbacks without spoiling anything (Namely, that using her effectively sacrifices a party member).
    • Amalthus is difficult to talk about without revealing that he shares the role of Big Bad with Malos.
    • The true identity of The Architect spoils not only this game's plot, but part of the plot of the first game, its ending, and the fact that this game is a Stealth Sequel. Even looking up The Architect's voice actor will spoil the game, provided you've played the first one.
    • Pneuma is impossible to talk about without revealing her connection to Pyra and Mythra. In the Super Smash Bros. Ultimate presentation for Pyra and Mythra, her Spirit was censored for the viewers in case her design spoiled anything.
  • Xenoblade Chronicles 3:
    • It's impossible to talk about the Queen of Keves and the Queen of Agnus without revealing that they are just robotic copies of Melia and Nia from the previous two games while the real Melia and Nia either have been sealed away or been sleeping up until the end of the game.
    • It's difficult to talk about Consul M and N without revealing that they are alternate versions of Mio and Noah respectively. Even more-so with M's case as she is revealed to be Good All Along, and her massive Batman Gambit in Chapter Five is one big huge spoiler.
    • Joran and Miyabi initially appeared to be Posthumous Characters while Cammuravi seemed to have died mid-way through the story. However, all three of them end up coming Back from the Dead with Joran becoming a consul while Miyabi and Cammaruvi becoming heroes to fight with the party (though, in Cammaruvi's case, having him is completely optional). Because of this, discussing them tends to give-out a lot of spoilers.
    • Shania, despite being initially appearing as an ally, ends up joining Moebius, and becomes a traitor to the Lost Numbers. Because of that, she is quite hard to talk about.
  • Xenoblade Chronicles X:
    • Lao is, starting with Chapter 9, impossible to talk about spoiler-free due to his Face–Heel Turn, his motives for doing so, and becoming the Final Boss.
    • Elma is the subject of a massive Reveal in the last few chapters about her true nature and her role in the overall plot.
    • A few minor, unassuming NPCs who eventually become the antagonists of missions fall into this, especially Powell, Alex, Ornella, and Justin.
    • The existence of the Tree Clan Prone is largely kept secret until a good way through the game (unless you take a peek at the achievements list), at which point they are involved in many missions thereafter.

    Y 
  • Yandere Simulator has Yandere-chan's mother Ryoba, who is a Yandere in her own right and it's hard to bring her up without revealing she's essentially the Greater-Scope Villain that made the video game possible (in SO many ways).
  • Ys SEVEN
    • Tia appears as a simple flower girl that Adol just has to help. Later you learn that she's really eldress Tialuna of the Moon Tribe, the Big Bad, out to destroy the world to return it to its proper balance.
    • Cruxie is Delicate Andsickly and her brother Mustafa takes care of her. After you gain the Fire Dragon Stone, she gets better and replaces her brother for the remainder of the game. That's right, Mustafa is really the Guest-Star Party Member.

    Z 

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