Walking Spoiler

A character or thing who has most of the tropes underneath it as spoilers. Mentioning anything about this character or thing at all - or sometimes even using its name - will often reveal spoilers about the work they feature in, which predictably makes talking about it difficult. Some fans reconcile this by using euphemisms, others by avoiding talking about it at all, others just by placing a warning that the following will contain massive spoilers.

Can overlap with It Was His Sled, if the work in question is old or culturally engrained enough that pretty much everybody already knows about the various plot twists.

On Character Sheets, common policy for dealing with a Walking Spoiler character is simply to leave all of that character's spoilers unmarked, but isolate the character away in a dedicated folder with a massive spoiler warning.

Due to the nature of this trope, MASSIVE UNMARKED SPOILERS are in this article. If you don't know what that means, then you should probably take a good look at the page image for reference. It'll all become clear.

Examples:

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    Anime and Manga 
  • Princess Emeraude from Magic Knight Rayearth is revealed to be the Big Bad, not the Big Good.
  • Lelouch's supposed-to-be-dead mother Marianne (whose spirit has been hiding in Anya) in Code Geass.
  • The Idea of Evil from Berserk, to the point the author originally omitted the original scene because he felt it was too much of a spoiler at too early a time.
  • The Mayor from Panty & Stocking with Garterbelt. His full name, description and every trope except Walking Spoiler is whited out.
  • 20th Century Boys has two examples, both of the Friends: Fukubei, a mostly unremarkable character whose only trope-worthy characteristics come after he's revealed as the Big Bad, and Katsumata, whose mere existence is a major plot reveal at the end of the story.
  • Mazinger:
    • Most of spoilers in Mazinger Z and Great Mazinger revolve around Kenzo Kabuto and Archduke Gorgon. The former one was thought being dead for a long while, but at the end of the series it was revealed he was alive. Oh, and he is The Hero's father. He also is a major character of the sequel, where he gets Killed Off for Real, so it is pretty much impossible talking about him with spoiling key plot points of both series. Gorgon's first appearance revealed the supposedly extinct Mykene civilization still existed. At the beggining he seemed another Obviously Evil Hell's ally, but in reality he was a Dragon with an Agenda was working for a Bigger Bad as he plotted destroying both Dr. Hell and Mazinger-Z. He was successful on all accounts, so describe him means spoiling the end of the series.
    • Maria Grace Fleed from UFO Robo Grendizer is one of the cases where her mere name is already a spoiler. She is The Hero's sister. However, Duke was supposed to be the only Fleedian survivor and have no family left. Maria is one of the main characters, and you can not describe her without spoiling both facts. Geez, stating her last name is a complete giveaway. And then you have Rubina. Who is she? Big Bad King Vega's daughter and Duke Fleed's fiancée.
  • Naruto
    • Danzo, due to his involvement in the Uchiha Massacre, as well as several other characters' backstories.
    • Madara Uchiha was this initially, since he was thought to be dead for a long time. Then it turns out that he was dead, and the guy who's been pretending to be him all this time is Obito Uchiha (who was not only thought to be dead, but was also formerly Kakashi's teammate). And now, Madara's other partner (Black) Zetsu forced the weakened Obito to revive him completely.
    • Itachi - who was Good All Along and whose death reveals many subsequent twists as a result. His brother Sasuke would've been one too, before his Face-Heel Turn became It Was His Sled (hard to hide considering it drives the plot of Shippuden and Part II in the manga), plus Sasuke is pretty much the Deuteragonist of the story.
    • Tobirama and Hashirama, after the revelation of their backstory, which basically put into motion a chain of events leading to the current timeline's ordeals.
    • Kaguya Ōtsutsuki, being the very first Chakra user and the mother of the Sage of Six Paths, dwarves every single other Walking Spoiler before her. This gets even worse once it is revealed that she is not a Posthumous Character and promptly proceeds to usurp Madara's position as the Big Bad.
    • And for the shippers, Himawari, whose mere existence makes her surname a spoiler. This alone should tell you who her parents are.
  • Baccano!
  • Fullmetal Alchemist
    • King Bradley is difficult to mention without revealing that he's secretly the Homunculus Wrath (Pride in the first anime).
    • His "son", Selim Bradley/Pride even more-so. It's nicely handled on the character page by listing them as separate characters on separate pages, though Pride is pretty much an all-white entry as a result.
    • Everything about Father is a spoiler, including his appearance - which is identical to Hohenheim and thus reveals an important connection between them.
    • The 2003 Fullmetal Alchemist anime has Big Bad Dante.
      • Lyra as well. She appeared early on and is a minor antagonist but appears again later on.. Sort of.
  • Puella Magi Madoka Magica is nearly half Wham Episodes, making it near impossible to talk about without revealing something, but some individuals are a cut above the rest.
    • Mami Tomoe's death is her most important "action", and talking about her or the story as a whole without pointing out that an main character is mercilessly killed three episodes in is rather difficult. Then Memetic Mutation turned her death into It Was His Sled.
    • Oktavia von Seckendorff, Sayaka's witch self, reveals that Magical Girls become witches as well as which character will be the first to do so on-screen.
    • Homura's identity, motivation, relationship with Madoka, and even her powers are all huge spoilers. Goes double for the pigtailed glasses-wearing version of Homura ("Moemura"), who first appears when all this is revealed, and goes triple for her in Rebellion.
    • Madoka herself is not an example, but two of the forms she takes are: Kriemhild Gretchen, her witch form, and Ultimate Madoka, the Cosmic Entity she becomes in the final episode.
    • Kyouko only shows up after things go to hell, with everything about her character being related to the darker elements that were only hinted at prior, and all her major contributions are being involved in spoilerific events.
    • A bit of real life walking spoilers as well, the producers tried to keep the fact that Gen Urobuchi wrote the script a secret from viewers due to how he automatically ups the tragedy quotient of anything he's involved with. When his involvement was leaked he lied and said he wanted to write a heartwarming story for a change. When you consider how the story does end, it turns out the creators still got the last laugh overall.
  • Risa Kamizaki and Mika Makihara from Amagami both are responsible for the rejection that figures largely into Junichi's backstory. The former tricks the latter thus causing Junichi to think he was Stood Up.
  • Mello and Near from Death Note; the fact they're L's successors (coupled with L's utter refusal to give up on the Kira case) are an easy tip-off to the fact that L dies.
  • One Piece
    • Just listing the main characters is a spoiler, as the series plays Five-Man Band straight, deconstructs and slowly averts it. A special mention goes to two antagonists who make Heel-Face Turn and join Luffy's crew.
    • Discussing Vivi typically reveals that she's undercover in Baroque Works as Ms. Wednesday, and with later developments that she's technically a World Noble.
    • It's difficult to talk about the four Cipher Pol agents undercover in Water 7, especially not Kaku and Lucci, without revealing their being The Mole.
    • Rouge — knowing anything about her (especially her full name) reveals that Luffy and Ace aren't even related.
    • It's impossible not to mention Sabo, who is revealed to be their other "brother". Even if you don't mind that particular revelation, there's the teeny problem about him being alive in a certain Wham Episode.
    • Blackbeard shows up as a minor character, albeit one who shares an awful lot in common with Luffy and briefly shares the spotlight with him. While he does become important later on, this jolly man turns out to be Luffy's Evil Counterpart and a true Chessmaster, matching Luffy's crewmates one for one with darker counterparts and manipulating everyone around him, including many other important characters we saw before, in his attempt to gain power and find the One Piece.
    • Poseidon; even being on a character page reveals that a Weapon of Mass Destruction is actually a Person of Mass Destruction.
  • The Character page for Mobile Fighter G Gundam spoilers out every last entry (and the name) for Major Ulube Ishikawa, due to him being revealed as the Big Bad about, oh, four episodes from the end. Specially since until then, he was seen as the Reasonable Authority Figure of the series.
  • Tengen Toppa Gurren Lagann
    • Nia Teppelin is the Spiral King's daughter, appears after Kamina's death, and is the Anti-Spiral messenger.
    • The Anti-Spiral is the series true Big Bad.
  • Fairy Tail
    • Zero is the Bigger Bad of the Nirvana arc and the Super-Powered Evil Side of Brain, the Big Bad of the arc. Zero doesn't appear until all of the other members of the Oración Seis are defeated, and his existence has little Foreshadowing.
    • Queen Chagot at first seems to be The Man Behind the Man to King Faust, and is even regarded as a deity. But it turns out that Faust is acting on his own terms, and that Chagot is hardly a deity. She ultimately isn't as evil as initially assumed.
    • Zeref. Even the fact that he's alive at all is a spoiler; this combined with him being quite different then how he had been originally described makes it essentially impossible to mention him to someone who hasn't read up to the point where he appears without spoiling something.
    • Acnologia first appears out of nowhere at the end of the Sirius Island arc (same arc in which Zeref is revealed) to nuke the entire island, leading to the members of Fairy Tail frozen in time for seven years. He then is revealed to be a dragonslayer turned Dragon and is the main reason they're not around anymore.
    • Future Lucy and Future Rogue for mainly being from the Bad Future, and are not revealed until the end of the Grand Magic Games arc. Same thing with the seven dragons from the future that come back to present day.
    • Silver from the Tartaros dark guild is revealed to be Gray's father and possessed by the demon Deliora. Except the second reveal isn't true, and he just wants Gray to kill him.
    • E.N.D., Master of the Dark Guild Tartaros and The Ghost / Ultimate Evil / Bigger Bad for the entire eponymous arc is revealed by none other than Zeref himself at the very end to be the demon incarnation of Natsu, and may very well be Natsu's original self.
    • Showing a single image of Gray after the second Time Skip is almost certain to be a giveaway of his Face-Heel Turn.
  • Habara in Daily Lives of High School Boys may look utter unremarkable (she's the Distaff Counterpart of the local Ridiculously Average Guy Tadakuni), but she has very significant backstory which cause most tropes under her—as well as her epithet during the time—to be spoilered.
  • Bleach
    • Aizen was a gentle, beloved captain who was killed off early in the Soul Society arc before being revealed at the end of it as the very much alive Big Bad. The reveal turned him into this trope for a while until It Was His Sled kicked in.
    • Royd Lloyd's existence is kept a secret until it is revealed that he was posing as Yhwach while fighting Yamamoto, and it's impossible to mention any of Royd's actions without spoiling that Yhwach was not the one who fought against and lost to Yamamoto. Even his name is a spoiler.
    • Kanae Katagiri is Uryuu's Missing Mom, but she isn't revealed until the final arc because her story connects Ryuuken's hatred of quincies and his estrangement from Uryuu with Masaki's death. It's also connected to certain things that are revealed about both Uryuu and Ichigo in the final arc.
    • Merely the name Yachiru Unohana is this, since while it had been established some time before that Kenpachi Zaraki had named the little girl he adopted after someone important to him, finding out just who this person really is does a complete 180 on the previous characterization of Captain Retsu Unohana, who before had been portrayed as the kindly Team Mom of the Gotei 13 (although people are afraid to get on her bad side) but is in fact the previous Kenpachi and an Ax-Crazy former criminal.
  • Nanamine of Bakuman。 initially presents himself as a cheerful and energetic, if somewhat naive, young mangaka. Within a few chapters, you realize that he's actually a devious schemer who intends to subvert the editorial process and climb to the top of the manga world with online helpers, and it's difficult to talk about him without mentioning this. On a lesser scale, Iwase only makes a few appearances before returning to the story as a rival mangaka.
  • Shizuru of Mai-HiME initially seems like nothing more than the Student Council President and a friend of Natsuki's who occasionally helps her out. Then, in the last few episodes, she's revealed as a Hime and kills quite a few people for Natsuki's sake, while revealing that she is in love with Natsuki. Most discussion of her character tends to focus on her actions toward the end.
  • Lyrical Nanoha
    • Alicia only gets mentioned with spoiler warnings since any discussion about her, from her role in the story, to her relationship with the characters, to her appearance, to her family name will reveal that Precia had another daughter before Fate... and that Fate was a failed attempt to revive her.
    • Rein a.k.a Reinforce Zwei. You know something must've happened to the first Reinforce when a character with the same name has the German word for two on her name.
  • Tegami Bachi
    • Talking about Gauche Suede at virtually any point after the first chapter is likely to involve spoilers; after delivering Lag to Cambel Litmus, he was promoted to the head office, then lost much of his heart, disappeared and ended up with Reverse. Much of the early story involves Lag finding out what happened to him.
    • "Roda", Noir's accomplice, who bears the name of Gauche's dingo. Discussing her inadvertently reveals Gauche's status as Noir.
    • Jick Barrol, given his status as a major antagonist complicit in the Amberground government's misdeeds.
  • GaoGaiGar: Pizza of the Four Machine Kings a.k.a. Soldato J-002, pilot of the Giant Mechanoid King J-Der.
  • Ushio Okazaki from CLANNAD. Her existence as Nagisa and Tomoya's daughter doesn't spoil the fact that the two of them ultimately get together, as it's made more than clear from the beginning that Nagisa is the main girl, but the fact that she's an actual character in her own right does spoil the fact that the anime continues on after they graduate to follow their married life. Her backstory also spoils the relatively well-known fact that Nagisa dies in childbirth.
  • Seimei Aoyagi from Loveless has over half the tropes on his entry on the character paged blacked out after The Reveal that he's alive after having been assumed dead since the start of the story. The revelation that he's alive also completely turns his prior characterization as a loving older brother on its head.
  • Raizen in YuYu Hakusho. Describing him in more than general terms reveals one of the biggest twists in the series, since he's Yusuke's demon ancestor.
  • Bokurano
    • Youko Machi, since she's from another Earth, is Koyemshi's sister (which in turn reveals that he used to be human), and planned for the kids to get involved in the game from the very beginning. It's difficult to talk about her without mentioning any of this.
    • Junji "Katari" Karita appears in one scene, falsely claims to be a Zearth pilot (thus derailing the plan to go public about Zearth) and is killed shortly thereafter. Essentially, his name and gender are all you can reveal without spoiling this.
  • From the New World has the Fiend ("Akki") who is actually Mamoru and Maria's child who has been raised by the monster rats.
  • Girls und Panzer
    • The Maus, technically treated as a character like some of the other tanks, is a surprise Black Forest unleashes on Oarai, to devastating effect; it only appears at the end of the penultimate episode of the first series.
    • Maho Nishizumi has a large number of tropes spoilered out, especially concerning that 1)she is defeated in the finals, 2)In Little Army, she won by firing on an enemy flag tank that went to rescue one from her team, and 3)Contrary to her initial first impression as an Aloof Big Sister, she actually loves Miho dearly, and chooses to be Nishizumi heiress so that Miho will not have to.
    • Koume Akeboshi, the girl Miho saved from drowning in the last tournament, and resulted in Black Forest's defeat. Her only scene involves her talking about that plot point and thanking Miho for saving her. Her name is essentially the only thing you can mention without spoiling it, albeit in large part because it's found in supplemental materials.
  • Attack on Titan
    • The existence of the Titan Shifters, humans with a Lovecraftian Superpower that allows them to create and pilot a Titan form. As a result, there's quite a few characters (Eren, Annie, Reiner, Bertolt, and Ymir) with entries that are largely spoilers. Especially Eren, as the last time we saw him before he shows off his Titan Shifting powers, he was eaten by a Titan and was made to look like the Decoy Protagonist.
    • The Beast Titan, a strange ape-like Titan of incredible intelligence that can speak human language fluently and command other Titans. It is all but explicitly stated to have transformed the missing residents of Connie's village into Titans.
    • The Colossal Titans entombed within the Walls, which appear to provide the foundations.
  • Luna from Casshern Sins.
  • Neon Genesis Evangelion
    • Though it's entered It Was His Sled territory now, most tropes about Yui Ikari and Unit 01, since the two are in fact one and the same, with Unit 01 containing Yui's soul. Yui's face is also considered a spoiler and is not revealed until late in the series because of her very close resemblance to Rei Ayanami, who is in fact a clone of Yui and a Replacement Goldfish for her husband Gendo.
    • Kaworu, not only for being the 17th Angel, but also because he doesn't appear until everything has already gone to hell.
    • In the third film of the remake Rebuild of Evangelion, it's impossible to talk about Sakura Suzuhara, Toji's little sister, appearance or role as a medical officer without spoiling the 14 years time skip.
  • In episode 11 of Detective Conan, Narumi Asai, the kindly and seemingly innocuous female doctor who helped out Conan, Kogoro and Ran during their stay in Tsukikage Island turned out to be a man who cross-dressed as a disguise to enable him to investigate the suspicious death of his father and plot his revenge against the culprits. He was also notable to be the only murderer of the week who was Driven to Suicide after Conan exposed him, contributing greatly to his Character Development and he would later consider his failure to prevent Asai from committing suicide as his greatest blunder.
  • Sakura Gari gives us Sakurako Saiki. While she appears relatively early in the story, her actual role in it as well as her twisted motivations aren't revealed until almost the end. Same goes to the fact that he is a boy named Youya.
  • In the Pretty Cure franchise, every Sixth Ranger are Late Arrival Spoilers. However, The Dragon Regina from DokiDoki! Precure, started out as a villain, got quickly befriended by Mana, then Regina went nuts, then she became normal again and joined the Pretty Cure for about two episodes, and then she's brainwashed by her father. She's Put on a Bus for about 13 episodes, and when she's back, she gained the Miracle Dragon Glaive, one of the three legendary regalia. Regina is Mana's friend, but it's a spoiler that she's still a villain, while every Dark Magical Girl who wasn't an Evil Knockoff joined the Pretty Cures. And it's also a spoiler that she's not Cure Ace.
  • Akito Sohma in Fruits Basket - specifically, her gender. Many of her entries either blank out her name or blank out her pronouns, although it's also acceptable to simply call Akito a "he", considering that everyone in-story (including Akito herself) refers to her as such until the tail end.
  • Saki has the eponymous main character's older sister, Teru. When she is first mentioned, it's implied that she and Saki are not on good terms at the moment, but Saki has fond memories of her. When she first appears in the present, she's become cold, detached, and refuses to acknowledge being related to Saki. That latter part is an unpleasant surprise to Saki, and is somewhat surprising considering what we had heard of Teru.
    • A so far unnamed girl is shaping up to be this, given her appearance in a series of flashbacks that implies that 1)she's somehow related to Saki and Teru, and 2)whatever happened to her is related to the Miyanaga family falling apart.
  • Mai-Otome
    • From the manga, there's Sergay Auguste Taiki, who, unlike his Punch Clock Villain counterpart from the anime, has no redeeming qualities and turns out to be the Big Bad.
    • From anime and manga series, Lena Sayers. The spoiled twists are different for each adaptation, but one thing both versions of her have in common is that she's Arika's mother.
  • Kill la Kill: It gets hard to talk about the Life Fibers in the later half of the series without spoiling the fact that they're sentient aliens that had their hands in humanity's accelerated evolution. Consequently, any character that is related to them or has a hand in Ragyo's Evil Plan to bring the Life Fibers back to power is also spoileriffic.
    • Nui is easily the big one however, since she appears close to halfway in to deliver an absolutely game changing revelation. This is without giving away the fact that she's an Artificial Human.
  • Mobile Suit Gundam SEED has Rau Le Creuset, whose status as Big Bad, Omnicidal Maniac, and clone of Al La Flaga are revealed in the last five episodes of the show.
  • Mobile Suit Gundam ZZ has Glemmy Toto, who is both The Starscream and a clone of Gihren Zabi, facts that aren't outed until the end.
  • Mobile Suit Gundam 00 has Ribbons Almark, the real Big Bad of the first season and of the entire series.
  • Mawaru-Penguindrum has a whole lot of twists and pieces to be put together, so naturally there are a lot of characters with heavily spoilered pages. Yet somehow, in amongst characters whose very identity is a spoiler, Kanba seems to have it worst, despite being one of the leads. This is because a lot of what he does even very early on in the anime (before the audience understands, of course) relates back to one really big spoiler, which also happens to represent one of the most complex and centralised parts of the plot. Not only that, his entire backstory is a spoiler as well.
  • Murasakiiro No Qualia has multiple characters that you can't really talk about without giving something away.
    • Talking about Yukari, the purple-eyed deuteragonist, is practically impossible unless you mention that she dies after the first few chapters, and her death ends up creating the big plot and reason for the multiverse story to unfold, all in an effort to prevent her death.
    • Talking about Hatou Manabe, the protagonist, is even worse, if possible. Try to describe Hatou to someone without mentioning that she ends up getting kidnapped by a serial killer, her arm being chopped off and reassembled by Yukari with the help of her cellphone. That said cellphone arm functioning as a proper cellphone and giving her the ability to talk to infinite parallel universe versions of herself that warn her of Yukari's death. That she can communicate with them and gain the knowledge and memories of her parallel universe-selves, can practically create a universe where magic exists that gives her magic abilities. And she recently obtained the realiziation that she could take over and "become" almost every person she wants to be. There's more, but... yeah.
    • Tenjou Nanami has it a bit easier. The only thing that is a spoiler to talk about with her is that she was Yukari's first "operation patient" and she had injuries that were "fixed" by Yukari with pieces of a jungle gym.
  • Describing tropes that apply to Kyoko is very difficult if you really want to avoid spoiling the fact that she's the serial killer who murdered Ayumu. Entire entries on most of the trope pages relevant to her are almost completely spoiler tagged.
  • Assassination Classroom: Kaede Kayano. Literally every single piece of information related to her, including her name, has to be revaluated after the revelations pertaining to her occur.
    • Aguri Yukimura. The series is very careful to not reveal that she, the women shown several times in Koro Sensei's past and the former teacher of Class-E are same person and knowing her relationship with Koro Sensei (or rather his prior identity as the God of Death, which is also a humongous spoiler) completely changes ones perception of Koro Sensei and his motivations.
  • There are plenty examples to be found in the Kagerou Project, but probably the biggest is Kano, who's background and true motives are huge twists for later in the series.
  • The Evillious Chronicles is absolutely full of them.
    • Ney Futipe, a seemingly minor character in Cloture Of Yellow until she's revealed at the end to be The Mole. Then comes the later revelations that she's the illegitimate child of Prim and Arth, as well as one of the incarnations of Gretel.
    • Just stating the name Cherubim Venomania gives away The Reveal in The Lunacy Of Duke Venomania pertaining to Steriasis's true identity.
    • The Demon of Gluttony, mostly thanks to him being killed, absorbed and replaced by Banica Conchita at the end of Evil Food Eater Conchita, who goes on to become Master Of The Graveyard and one of the franchises main villians.
    • Sickle, who is the Top God and Big Good. Knowing this radically rewrites what one knows about the origins of the series world, religion and Levia-Behemo.
    • Eve Moonlit, the Original Sinner, who is revealed at the end of Gift From The Princess Who Brought Sleep to be the true identity of the Demon of Sloth, as well as Mikulia Calaground, Platonic and Margarita Blankenheim.
    • From the same novel there's also Mayrana Blossom, who's existence as Julia's body double isn't given until The Reveal.
    • Irregular, who is revealed in Seven Crimes And Punishments to, against all implication, not be the same individual as Allen. The same book also has Punishment, who's very existence isn't even hinted at until his brief appearance at the end.
    • Seth Twiright, the researcher referenced multiple times in Original Sin Story, until there comes the big bombshell late into Fifth Pierrot that he's the Demon of Wrath.
  • Idolmaster: Xenoglossia has Yukiho Hagiwara, who initially appears as a shy girl with a tendency to fall asleep at various moments, but in the Christmas Episode is revealed to be Chihaya Kisaragi's friend and a spy for Turiavita, trying to help Chihaya get Imber back from Haruka, and goes as far as to snatch Imber's key from Haruka in the next episode after revealing her true motives and take Chihaya's (who gets Imber) place as Nubilum's pilot.
  • Bodacious Space Pirates gives us Ironbeard, captain of the Parabellum, during the last arc of the anime. He turns out to be Marika's father, who was stated to have died at the beginning of the anime and the reason Marika had to become captain of the Bentemaru in the first place.

     Comic Books 
  • It's pretty much impossible to discuss Invincible without spoiling that Omni-Man, the protagonist's father, isn't a Superman Expy so much as a villainous advance scout for a race of alien conquerors.
  • Just try to explain the original concept of Thunderbolts without revealing the twist.
  • Spider-Man
  • Frank Wolff, a character in the Moon Arc from the Tintin series, has more white under his name than anyone else on the Characters page. This is because he not only turns out to be the one responsible for leaking information about the rocket to the mysterious foreign power but also winds up being an atoner who saves the heroes by killing the Big Bad's proxy and then throwing himself out into space (thus ensuring that they'll have enough oxygen to make it back to Earth).
  • In Death of the Family, everything about Harley Quinn in this storyline is a spoiler.
  • The identity of Nightmare Moon II in the second story-arc of My Little Pony: Friendship Is Magic (IDW), so much that we can't refer to the Big Bad of the Arc by the name she's introduced with without spoiler tags!
  • In Ravages Of Time, it's impossible to post any pictures of Sun Ce or Sun Quan without spoiling two key plotlines in the story: Sun Quan is the blink-and-you'll-miss-him kid next to Shan Wuling in Volume 6 who reappears and is revealed twenty-seven volumes later, while "Sun Ce" was actually an impersonator whose real name was Ling Cao and his supposed younger cousin Sun Fu was actually the real Sun Ce under a pseudonym, and the Sun Clan character sheet does not obscure their identities.
  • Try to talk about Xari's role in Paperinik New Adventures without revealing he survived the fall of his planet and started to work for the Evronians to capture Xadhoom(his ex-girlfriend)to protect the survivors of his race.
  • Very nearly everything about Elijah Snow's personal history in Planetary ends up central to the plot and backstory. The big, big reveal? He's the Fourth Man and the founder of Planetary.
  • Due to its unique structure, it is impossible to even describe the premise of the Judge Dredd storyline "Trifecta!.
  • Adam Mitchell in Doctor Who: Prisoners of Time.
  • Talking about the current Loki after events of his adventures in Journey into Mystery is near impossible without dropping massive spoilers, since his entire motivation and and personality stems from the fact that the final issue of Journey Into Mystery, the original Loki obliterated the young, innocent Kid Loki, taking over his body. (but he feels pretty guilty about it, despite that he's still trying to be a good guy now) If you try to get someone to read Young Avengers or Loki: Agent of Asgard, you pretty much have to tell them that they need to read Journey Into Mystery first, because any storylines following Journey Into Mystery WILL spoil the ending out of necessity since it is a hugely defining moment for the character.
  • It is impossible to talk about Bombshell's role in Transformers: Robots in Disguise without giving the main twist in the first season. This is because he is seemingly killed by Prowl, only for him to return ten issues later, where it is revealed he actually Prowl into a mind controlled proxy for Megatron's scheme. Bombshell is then killed shortly afterwards, making it impossible to talk about him as a result. Showing an image of the new Devastator is also this, since it gives away the fact that Prowl becomes the new head.
    • Just try talking season 2 of Transformers: More than Meets the Eye without spoiling Megatron's defection. I dare you.
    • Minimus Ambus. Saying anything about him other than that he's the brother of Dominus will out Ultra Magnus as a Legacy Character.
    • Rewind II. His existence is pretty much a dead giveaway to the fact that the original Rewind is killed.

    Fan Works 
  • The Katawa Shoujo fic Reconciliation has an interesting variant in a character whose conspicuous absence serves as a Walking Spoiler. It's revealed early on that Hisao has died of a heart attack, setting the plot into motion. Only the most basic description of the setting can avoid mentioning his death, and doing so spoils Hanako's bad ending.
  • The Tainted Grimoire
    • Raven: A high-ranking member of Khamja. Killed Off for Real.
    • Crow: He worked for Khamja. He then left them. And then he joined Clan Gully.
    • Archbishop Finch: A corrupt man trying to seize power in St. Galleria.
    • Barley: Nearly everything he did affected the plot in major ways. And then finally, Killed Off for Real.
  • The majority of the spoilers in Neon Genesis Evangelion Peggy Sue Fan Fic The Second Try revolve around a little girl named Aki... Aki Ikari.
  • Claire Thompson in The New Retcons. Later, Fiona Brass and Kortney Patterson, nee Krelbutz.
  • In Perfection Is Overrated, Meiko is thought to be a friend of Mai's, but it turns out that she's Bachiko's accomplice, having rewritten everyone's memories so that Bachiko could pretend to be an Old Friend of Mai's and she could pretend to be a newer friend, while the two scheme to manipulate various characters' relationships.
  • The Pony POV Series:
    • It's pretty hard to talk about Trixie's involvement in the story without bringing up that she's a second Element of Magic, or that the first Big Bad, Loneliness, is her Enemy Within.
    • It's also next to impossible to discuss Fluttershy beyond the first season without bringing up her becoming the second Big Bad Princess Gaia, or that "Gaia" is just a cover for Nightmare Whisper.
    • Likewise, Fluttercruel's involvement in the above and her Heel-Face Turn in response to fixing it, becoming a second Element of Kindness in the process.
    • Luna, Celestia, and Discord's backstories are completely whited-out on their character pages, due to their origins, families, falling out, the war between the Alicorns and Draconequi, and the time they spent as mortals, being integral to the plot.
    • Nightmare Mirror's character listing is almost completely whited out, to hide the fact that she's an Alternate Universe Applejack.
    • Diamond Tiara's involvement in the story starts out small, but then we find out Discord's using her as a puppet and corrupting her, and eventually gets her to free him, turning her into a Nightmare and his Dragon in the process.
    • The Dark World is full of these, but the biggest examples are Fluttershy, Fluttercruel, Rancor (when her true motives are revealed), The Nameless Passenger/Nightmare Paradox, her Psycho Ranger Co-Dragons, and The Benevolent Interloper/Amicitia.
    • Discord's erased older brother, D___t, due to his role as Big Bad of Bright Eyes' 7 Dreams/Nightmares section, and the fact that he turns out to have been evil (as opposed to the White Sheep everyone assumed he was).
    • And than there's the biggest example of all (to the point that their entire section on the character sheet is covered), ladies and gentlecolts, the G3 universe.
    • The Interviewers, once their true nature and identity is finally revealed.
  • The Powers Of Harmony: Pretty much anything to do with the Guards' true natures, Cetus, Eclipse, Horizon, or Harmony are spoilers.
  • Moonstuck has Discord. His very presence spoils not only the ending and the nature of one of the two other villains, but also that the whole thing is set during his original reign of Equestria (and not, as many fans initially assumed, set during Luna's imprisonment in the moon).
  • Eternal has The Sun, whose presence is a huge spoiler for not only what's been happening to Celestia for the past millennium - and thus what's currently happening between her and Twilight - but the entire reason for it happening in the first place.
  • Imperfect Metamorphosis
    • Rin Satsuki, whose identity, powers (and how she got them) and history are spoilers for the motivations and goals of more than half the cast.
    • The Shadow Youkai is a lesser example. Her origins and nature are certainly a spoiler, but her existence is most certainly not, as "Rumia's Superpowered Evil Side" has long been a Fandom-Specific Plot for Touhou fan works.
  • Horseshoes and Hand Grenades has many characters with tropes related to them spoiler-tagged. These include: Ryusei Sakuta (who has been brainwashed twice and converted into an android), Kengo Utahoshi (who has become a servant to Ophiuchus as early as Chapter 2), Jiro Inseki (the whole reason Ryusei even killed Gentaro in the first place being killed and resurrected), Mei Shirakawa (who was the fortuneteller who pushed Ryusei on the path to kill Gentaro in the first place) and Shotaro Hidari (for becoming a Serpent-bearer and losing his mind.)
  • Marie D. Suesse And The Mystery New Pirate Age!
    • Monkey D. Madelyn. To make a long story short, she, a World Noble, got her hands on a special Devil Fruit, and used it to fall in love with Trafalgar Law. Unfortunately, as his personality slowly changed because of her influence, she assumed he'd given up on winning the race for One Piece, and used her powers to arrange for her brother Luffy to get captured by the Marines so that Law would once again have a shot at winning. Doing so resulted in Luffy getting executed, and his crew dying one by one; overwhelmed by shame, she retreats to the real world, gets married and gives birth to the main character, before events result in her being taken back to the One Piece world 20 years after her departure. If you mention anything about her except her name or status as the "Pirate Queen", you'll give away a plot twist at some point.
    • The Disinfector, a.k.a. Trafalgar Law, who also plays a major role in the backstory as Madelyn's lover, and whose identity is kept secret for much of the fic.
  • Gouki Namikaze in A Growing Affection. As the Bigger Bad, Naruto's uncle and Minato's brother, the secret mentor of Konan and Nagato, among other attributes, pretty much any important mention of him is going to spoil the last two books.
  • Necessary To Win has Mizuho Miyanaga, who happens to be based on the girl from Chapter 102 and 104 of Saki. She was Saki and Teru's adoptive sister and a distant relative, until she died in a tankery match, as a result of Teru saving Saki rather than her, being only to save one. Saki forgetting about Mizuho and Teru's own conflicting feelings about her decision is the cause of Teru's enmity toward her, and Mizuho's death also caused the Miyanagas to break apart. Essentially, mentioning anything about Mizuho, including her name, spoils some part of the Miyanaga sisters' subplot.
  • In A Protector's Pride, Hell is a spiritual being and the second arc's Big Bad, and the dimension of Hell was actually named after him.
  • It's very difficult to talk about Double Rainboom without spoiling the crossover.
  • Sunset Of Time has the Big Bad, Vesper Radiance, wearing a Black Cloak for the first several chapters. The reason is that her eventual identity is not only a big reveal, but completely shifts the tone of the story.
  • The Conversion Bureau: The Other Side of the Spectrum has the Bigger Bad/The Man Behind the Man, Tirek. The entire conversion scheme turns out to be part of his revenge against the entire human race because one single girl named Megan Williams defeated him over one thousand years prior.
  • RWBY Grimm Darkness introduced us to Vlad Schnee, the father of Weiss and president of the Schnee Dust Company. To make a long story short, he's the one behind everything that happens in the story, from the worldwide Dust shortage to being the mastermind behind the controlled Grimm attacks.

    Films - Animation 
  • In Pixar movies, some of the Big Bads are Walking Spoilers:
    • Stinky Pete from Toy Story 2 seems friendly, but he is actually part of a Big Bad Ensemble with Al.
    • AUTO from WALL•E is set up as just being the auto-pilot before The Reveal that he is keeping the Axiom from returning to Earth.
    • Charles Muntz from Up since we think of him as being a friendly explorer before we realize just how Ax-Crazy he is.
    • Lots-o-Huggin' Bear from Toy Story 3 used to have one shortly after the movie came out, but after its massive success, his Big Bad status just became an It Was His Sled.
    • Axelrod from Cars 2. We just know he is the creator of Allinol before we find out he is Professor Zündapp's boss.
    • Mordu from Brave because anything other than "demon bear" will reveal something.
  • King Candy from Wreck-It Ralph has most of the tropes for his character entry blacked out because most of his character traits and motivations revolve around his past as the vengeful and power-hungry Turbo.
    • Prince Hans, from Frozen, is set up in the trailers as the charming Nice Guy love interest for the main character. The reveal that he's actually the Big Bad means that the majority of his character trope entries are spoilered out, and dramatically changes how you view many of his earlier actions in future viewings.
    • The tradition continues in Big Hero 6, as the numerous spoiler tags will tell, the reveal that Yokai is actually the thought-dead Professor Callaghan is a major plot twist. His daughter, Abigail, counts even more so, her existence providing a major clue to Yokai/Callaghan's motives and not being properly introduced until the last act of the movie, where she too is thought dead.
  • The Witch from ParaNorman is featured prominently throughout the movie, but has most of her tropes spoilered because of significant plot reveals late in the movie.
  • The live action characters from The Lego Movie due to introducing a whole new level of depth to the movie and coming right smack out of nowhere, with only the briefest of foreshadowing leading up to their appearance.
  • Boingo from Hoodwinked, who seems like a friendly rabbit who just happens to show up in everyone's story, then further examination reveals he's the villain.
  • It's not who Bowler Hat Guy from Meet the Robinsons is, but rather who he was that's important. He's the future self of Lewis' fellow orphan Goober.

    Films - Live-Action 

    Literature 
  • Animorphs has Marco's mom Eva. We know very little about her past, other than that she was killed in a tragic boating accident, and her husband couldn't stop mourning her. She's also the host of Yeerk commander Visser One, who faked her death, and soon grows into one of the series' most dangerous antagonists.
  • The Dresden Files
    • Molly Carpenter, Michael's oldest daughter, who has magical talent and becomes Harry's apprentice. And then even that information became obsolete.
    • You want to avoid spoiling the fact that Thomas is Harry's half-brother? This is going to significantly limit your ability to explain either of their motivations for most of their interactions after Blood Rites, starting with "Why does Harry immediately go to a vampire for help?"
  • The plot of Gone Girl sounds a bit boringly familiar without knowing the reveal that Amy Dunne has set the whole thing up.
  • Noah from The Raven Cycle is a bit hard to talk about without giving away the end of the first book. There's not really much to say about him that wouldn't spoil anything outside of "He's the quiet one." Heck, you can't even use his last name without giving something away.
  • A Song of Ice and Fire is such an extreme example of this, it is nigh-impossible to give an overview of the series without giving one and a half spoilers. Especially in the later books. For example:
    • Its nigh impossible to describe the plot of the entire series without mentioning that Eddard Stark is a Decoy Protagonist whose death affects the whole realm.
    • The fact that Daenerys' Not Quite Dead nephew Aegon even exists is a massive spoiler even without getting into his actions.
    • The Three Eyed Crow who has been reaching out to Bran used to be Brynden Rivers, otherwise known as Bloodraven.
    • And now, there is Leaf, the first Child of the Forest to make his appearance.
  • In The Gone-Away World, the hero doesn't actually exist until about halfway through the book—before that, he's a figment of his best friend's imagination.
  • You can't really talk about the second half of Warbreaker without revealing that God King Susebron is a perfectly harmless figurehead rather than an Evil Overlord and Bluefingers and Denth are not allies of the protagonists but the Big Bad and his Dragon with an Agenda respectively.
  • Warrior Cats
    • Rock and Hollyleaf. Rock because he's God and Hollyleaf because of how dynamic her character is.
    • Ashfur is a minor character, right up until his attempted murder of the protagonists (which forms the climax of Long Shadows). Because what characterization he got was so bound up in that one action, it's really hard to say anything about his morality or character arc without spoiling it.
  • Harry Potter
    • Sirius Black and Peter Pettigrew. There is no way to give an accurate description, however brief, of either character without spoiling The Reveal at the end of Harry Potter and the Prisoner of Azkaban. In subsequent books, both appear on a recurring basis with their true natures taken for granted.
    • Severus Snape. Pretty much any description other than Harry's horrible potions teacher is going to be a spoiler of some kind.
  • Orannis the Destroyer in Garth Nix's Old Kingdom trilogy. We don't even know anything other than his status as a Bigger Bad (including his name, we know him only as The Enemy) until the final chapter of the second book. That's when we learn that he's an Omnicidal Maniac and an Eldritch Abomination, who's been sealed in a split metal ball since before the creation of the Charter.
  • The Bartimaeus Trilogy has the Bigger Bad, Quentin Makepeace, who seems an eccentric playwright until Book 3. There's also the fact that he's quickly offed within a few chapters of The Reveal by Nouda.
  • The 39 Clues
    • The fifth Cahill branch, the Madrigals, and the fact that their founder was Madeleine Cahill, make it practically impossible to discuss the first series or the ancestral Cahill family without spoiling some of the most surprising revelations in the series. Madeleine's existence isn't even revealed until near the first series' end.
    • A lot of the enemies as well, due to their Heel-Face Turns at the end of the first series. Sinead Starling in particular becomes a big one due to her turning out to be Vesper 3, The Mole, in the second series.
  • Alma Coin from The Hunger Games series is the president of District 13. Up until the end of the second book its believed that District 13 was wiped out 75 years prior. It's not even hinted that it still exists until fairly early in the second book.
  • Septimus Heap: It's impossible to talk about Septimus without revealing he did not die at birth. Heck, the series as a whole is even called Septimus Heap. It's pretty obvious once you get maybe halfway through the first book that this "Boy 412" character isn't who he thinks he is.
  • Araris Valerian in Codex Alera. He's supposed to be dead. The slave working for Bernard and Isana is supposed to be brain-damaged. So when he pulls a Big Damn Heroes at the end of the first book and gets his real identity revealed to a few people in the process, it's a shock. He does keep the act up for a couple more books, but once he stops pretending the cat is officially out of the bag and it gets hard not to spoil everything.
  • Julius Grief in Alex Rider. Originally an unnamed clone of Dr. Grief who looks just like Alex from Point Blanc, he's thought to have died in the chapter he was introduced in. Nope, he was just arrested and comes Back for the Finale as a member of Scorpia.
  • In the Rivers of London series PC Lesley May is introduced as The World's Most Beautiful Woman and the series muggle voice of restraint. At the end of book one she has her face ripped off by the villain (who'd pulled a Grand Theft Me on her) in a way magic can't fix, and spends the rest of the series teaching herself magic, then pulling a Face-Heel Turn to join the bad guys who've promised her a new face. As you can imagine, everything she does after the midway point of book one has to be spoilered out. This also leads to every book blurb and review containing a Late-Arrival Spoiler on her status.
  • Pretty much any non-inconsequential character introduced in or that plays a significant role in The Forerunner Saga of Halo, since it takes place one hundred thousand years prior to the primary time period of the franchise, and sets the stage for every other current piece of media for it.
  • The cover of Ghost Wolf depicts a human girl and two wolves running alongside her. Not coincidentally, there are only two wolf characters in the entire series who are remotely important, and one of them "died" in a previous book. Storm's appearance can't even be written off of as symbolism, courtesy of the stream of wolf spirits that are also on the cover, which- unlike Storm- aren't depicted as physical beings.
  • Everybody knows what Jekyll and Hyde means. But when The Strange Case of Dr. Jekyll and Mr. Hyde was first published, their relationship was supposed to be the twist ending!
  • Mistborn: The Original Trilogy, saying anything about Marsh after about 3/4 of the way through the first book is a massive spoiler. Also, you can't talk about Ruin without massively spoiling the twist ending of the second book.
  • In Enders Game, the very fact that Mazer Rackham appears in the story at all is a rather massive spoiler, since he's introduced in an early chapter as a legendary war hero from the first Formic War—who should be long dead, as the war takes place over a century before the main story. It's not until the third act of the book that we find out that he's still alive, as the International Fleet used the relativistic nature of space travel to ensure that he would be alive to advise the commander of the human counterattack.
  • Meta-level: In The Nine Wrong Answers by John Dickson Carr, there's a character in a scene who is not who he's thought to be. Once this is revealed later on, the narrator explicitly points out that he didn't use the character's name at any point in that scene.
  • The Agent Pendergast series has Tristram and Alban the twin sons of the title character. Since they do not appear until Two Graves, one of the later books in the series, and the twist related to them isn't brought up until roughly a quarter through it, it's impossible to bring them up without also referring to their role in the series.
  • In the Warrior trilogy of BattleTech novels, Justin Xiang Allard's entire role is to be the Fake Defector who becomes the enemy spymaster to help sabotage the Capellan Confederation's efforts in the upcoming Fourth Succession War while pretending to do his best to use his knowledge as the son of the Federated Suns' resident spymaster to their advantage. This bit of information is easily found in most histories of the BT universe as well as referred back to in later fiction since these books were among the earliest written for it and the timeline has long since moved on, but acts as a major spoiler for the novels themselves, which don't so much as hint at this (even throwing in a convenient red herring or two) until the Reveal near the end of the last one.
  • Vampire Academy:
    • Victor Dashkov, for the first book, at least. His revelation as the Big Bad was a shocking surprise. Every later appearance comes with a brief mention of what happened, spoiling the surprise for readers who haven't read the opening novel.
    • Natalie Dashkov's villainous nature is a shocking surprise in the first book. All later mentions of the deceased character spoils the surprise for readers who haven't read the first novel.
  • Donna from A Scanner Darkly when its revealed she is Arctor's superior "Hank".

    Live Action TV 
  • Nina Meyers and President Charles Logan in 24, after they were revealed to be Evil All Along.
  • Dottie Underwood in Agent Carter, who is introduced as just Peggy's new neighbor, but turns out to be a Dark Action Girl, and a prototype Black Widow to boot.
  • Grant Ward in Agents of S.H.I.E.L.D.: the second half of nearly every trope listed under his name was blanked out for a long time, until Season One spoilers were unmarked in the show's character sheets. The first, uncovered half explains how each trope is used in the first seventeen episodes; the second, covered half explains how the use of the trope changes after The Reveal forces a Cerebus Retcon for everything he'd done in the series up to that point.
    • Agent Garret, who turns out not only to be The Clairvoyant, but is also responsible for Ward becoming a member of HYDRA and is also the first Deathlok.
  • American Horror Story: Asylum: The revelation that the infamous serial killer Bloody Face is the previously thought upstanding psychiatrist Dr. Thredson meant that every trope applying to the character is spoiler-tagged.
  • Angel:
    • Illyria. Just a picture of how she appears in the series immediately spoils the fact that Fred dies. The best you can do is hope that people won't recognise that it's Amy Acker underneath all that make-up, but covering up the name of the actress portraying Illyria does tend to set off alarm bells in the minds of the Genre Savvy.
    • Connor, whose very existence spoils the fact that: a) Angel gets a biological son; and b) Said son is given a Plot-Relevant Age-Up via a Year Inside, Hour Outside situation. Even if you spoiler-tag the fact that he's Angel's son, you'd have to also tag his name in order to hide what happens to that adorable baby mid-way through Season 3.
  • Arrow
    • Malcom Merlyn, AKA The Well Dressed Man. We already knew he was the leader of the show's Nebulous Evil Organization, but what we didn't know until the Mid-Season Twist was that he's Tommy's father, and he - not Tommy - is the adaptation of the comic villain Merlyn the Archer. Not to mention he's also the Dark Archer.
    • Slade Wilson, who in the Arrow continuity does not take up the mantle of the villain Deathstroke until another Mid-Season Twist reveals his survival and Face-Heel Turn. Simply knowing that he exists radically rewrites everything you think you knew or had figured out about Deathstroke and Ollie's time on the island.
  • Every single Cylon on Battlestar Galactica (Reimagined) with the possible exception of Number Six, since she's the only one who (arguably) isn't introduced to the audience as a "human."
  • Todd from Breaking Bad initially appears to be an extremely nice and eager guy, even if he is a criminal. His shocking and casual execution of a young boy at the end of a robbery tears that entire image to shreds and was also the final catalyst in the dissolution of Walter and Jesse's relationship.
  • Ben from season 5 Buffy the Vampire Slayer is Big Bad Glory's physical vessel. No one knows because there's a magic spell on him that makes any human forget.
  • Chuck season 4 Big Bad Volkoff turned into this when we found out he used to be Hartley Winterbottom, before an Intersect prototype made him Brainwashed and Crazy.
  • Degrassi: Cam is this. His character only lasted a season before he killed himself on the school campus. Half of the tropes for him on the Characters page are spoilered out.
  • Doctor Who:
    • River Song. This even applies in the series - thanks to time travel shenanigans, her timeline runs in the opposite direction of the Doctor's, so her "earlier" is his (and the viewers') "later." Her catchphrase literally is "Spoilers!"
    • If you have just started watching a particular Doctor's tenure, a mere glance at the DVD box art will make it abundantly clear when the Doctor is going to "die" and be replaced. Seeing a new actor on the next season's cover is a death sentence. Indeed the very fact that the Doctor is going to be replaced, which was quite a twist back in the day.
    • The Daleks and the Master were initially this for the new series, as it had established that the Doctor was the only survivor of both Daleks and Time Lords after the Time War. That was quickly abandoned for the Daleks though, and the Master's resurrections (plural) eventually slipped into Late-Arrival Spoiler/It Was His Sled territory.
    • Clara Oswald showing up half a season before she was scheduled to, dying, appearing again, dying again, and appearing for a third time is how she's introduced. Explaining all that is a spoiler for the entire season.
    • John Hurt's character in "The Name Of The Doctor".
    • The appearance of the Twelfth Doctor (Peter Capaldi) in "The Day of the Doctor" renders utterly moot the major plot point of the next episode, "The Time of the Doctor" since his very existence means there's no validity to the Eleventh Doctor's concern that he's the last incarnation. In between "The Day of the Doctor" and "The Time of the Doctor", it was impossible to talk about him without revealing his Early-Bird Cameo. This overlaps with Foregone Conclusion and Like You Would Really Do It, since Capaldi was cast as the Doctor and announced several weeks before "The Day of the Doctor" aired.
    • And about 5 minutes after Capaldi's entrance, Tom Baker appears as The Curator, who is strongly implied to be another future incarnation of the Doctor, heavily implying The Doctor will revert back to earlier incarnations at some point (for nostalgia's sake) though albeit after the show's stories are finished if that ever happens. Even if Eleven was unaware of Twelve's involvement, he couldn't ignore the Curator.
    • Missy from Season 8. To fully explain her would spoil the plot twist about her identity at the end of the penultimate episode of the season.
  • Edith's illegitimate daughter Marigold in Downton Abbey.
  • Fringe has 3 of these in the Amber Universe/S4 character sheet: the return of David Robert Jones, alternate-Nina Sharp and the reappearance of a now Omnicidal Maniac William Bell.
  • Elementary: For season one, Irene Adler. Irene's still alive, Moriarty exists, and they're the same person. Referring to Moriarty as 'she' (or indeed a non-gender-specific pronoun) is also a spoiler, of course.
  • Game of Thrones: Iwan Rheon was told to tell nothing of his character in the third season, who is merely called "Boy" in the script, and he is the only new actor playing a big part that was not part of the promotional material before the season began. Everything about the character's identity, allegiance, aims and procedence is meant to be a mystery and the clues given by the show are intentionally contradictory. Of course, this being the case is a spoiler already because it means that viewers can't take for true any personality he goes by until then. Those who have read the source material know who he is, but the character's introduction was massively changed and his true identify is only revealed on screen in the season 3 finale.
    • And now in season 4, The Night's King made his appearance. Though HBO would try to Retcon his existence on their site, referring to him as "another White Walker".
  • How I Met Your Mother: The Mother herself. The premise of the series hinges around the story of how Ted met her, taking YEARS of building up story and story twists to lead to the Meet Cute. The character was finally cast and shown in the eighth season finale, "Something New," which only has her boarding a train to go to the same wedding as everyone else. This sets the viewer that she will play a part in the next season but not actually meet Ted until the Grand Finale. As it turns out she's the catalyst for Barney and Robin's wedding, as a Flashback revealed that Barney met her coincidentally during the previous season.
  • Kamen Rider Gaim is absolutely awash in these:
    • The show's title character Kouta, his main Love Interest Mai, and The Rival Kaito all have large portions of their profiles blanked out because about 3/4 of the way through the show they lose their humanity and become Overlords, beings with power over Helheim Forest, the Alien Kudzu that's invading the planet. For that matter, Kaito is effectively the Big Bad of the show's final story arc.
    • Mitsuzane "Micchy" Kureshima undergoes a massive Face-Heel Turn, going from Kouta's Second Rider and little brother figure to being The Heavy of the show's third story arc, all out of an unrequited crush on Mai. He even sides with the Overlords and (apparently) kills his own brother in pursuit of his goals. Even the fact that his brother survives and Micchy is given the opportunity to redeem himself at the end of the series are spoilers.
    • DJ Sagara, the goofy guy who livestreams the street-dancing in the first part of the show, is eventually revealed to be the avatar of Helheim and an analogue for the serpent in the Book of Genesis.
    • And just to cap things off we have Ryoji Hase, Kamen Rider Kurogake. He starts the show as one of Those Two Guys, a comedic duo with the other nut-themed Armored Rider...and then becomes the series' first casualty after he eats a Helheim fruit, turns into a monster, and is cruelly put down by an antagonistic Rider. Gen Urobuchi, Gaim's head writer, outright compared Hase to Mami from Puella Magi Madoka Magica in that both characters' deaths mark the first major turning point for their respective shows.
  • Lost has two that stand out in a plot that's already hard to sum up without spoilers: The Man in Black, the Big Bad; and Jacob, the Big Good. It helps both only appear in the flesh in the penultimate season.
  • Once Upon a Time:
    • Baelfire, especially after The Reveal that he's also Neal Cassidy, Emma's former boyfriend and Henry's dad.
    • As of season 4, we have Elsa from Frozen.
  • Orphan Black has several of these. Helena is one, since not only has she killed several characters that are important to the plot, in the season 1 finale she is assumed to be dead, before it's shown that she's actually alive in the season 2 premiere. The season 2 finale made the Prolethian Mark Rollins into this, since it's revealed that he is also a clone from the heretofore unknown Project CASTOR.
  • Person of Interest
    • Season 1: Carl Elias, Special Counsel and Caroline Turing/Root.
    • Season 2: Alonzo Quinn
    • Season 3: Diane Claypool/Control
  • Power Rangers Samurai:
    • Lauren Shiba, the second Red Ranger and true holder of the title rather than her brother Jayden. Her Japanese counterpart, Kaoru Shiba from Samurai Sentai Shinkenger, has an identical plotline (except she's not related to Takeru - at least until she adopts him so he can officially inherit the title of ShinkenRed).
    • Mack, the Overdrive Red Ranger, has half of his character tropes spoiler-tagged (the rest of his teammates, by comparison, either have none or one each). He's an android.
  • Princess Serenity from Pretty Guardian Sailor Moon blew up the moon and rendered Earth barren for god knows how many years.
  • Michael and Lincoln's mother, Christina Scofield, in Prison Break. Season 1 shows us her funeral in a flashback, and season 2 goes out of its' way to establish that she was a good, devoted mother, mainly to contrast with their father who walked out on both of them at a young age (despite having a good reason for it). And then along came season 4, which not only reveals she's alive, but she's also an Evil Matriarch and the final Big Bad.
  • Revolution: The President Of The United States. His very existence is a secret not revealed until the last few scenes of the first season finale. Not to mention the fact that the US government apparently had been living in an American colony in Guantanamo Bay, Cuba, and the fact that Randall Flynn had been on mission to fix the blackout on their behalf.
  • Scandal: Becky, Huck's girlfriend. In a couple of episodes, she went from being a minor character to being a deadly villain who had shot the President and set up Huck to be the fall guy.
  • The season 1 finale of Sleepy Hollow has a character drop both Luke, You Are My Father and Evil All Along in the very last scene, making him one of the most important characters in the show, but in a way that's impossible to talk about without spoiling the reveal.
  • Smallville:
    • The entire character of Davis Bloome pretty much is built around he is the human side of Doomsday. Even the actor name has to be spoilered because the monster is played by a different actor.
    • Superboy as well, since he spent most of his screen time as Lex Luthor's creepy young clone.
  • Star Trek: Deep Space Nine: You can't talk about Ezri Dax (and her status as a permanent cast member) without spoiling. Because Dax's host is Jadzia, and the symbiont only joins with a new host when the previous one dies... oh.
  • Teen Wolf
    • Matt Daehler. Seemingly a minor character, he practically embodies From Nobody to Nightmare when he is revealed to be The Kid with the Remote Control that has been using the Kanima to kill people since the beginning of the second season. Since this pivotal aspect of his character is only revealed when the season is almost over, nearly all of his character tropes have to be spoilered.
    • The other two seasons have each had a villain like that. Peter from Season 1 initially appears to be a vegetable in an intensive care facility (having hidden the fact that he's been slowly healing himself), whilst Jennifer from Season 3 initially appears to be an Adorkable Hot Teacher, only revealing that she's the mass murdering dark druid who's been kidnapping and sacrificing people all season.
  • The Office (US): Pam's ex-boyfriend Brian is in the film crew documenting Dunder Mifflin.
  • Twin Peaks: Who killed Laura Palmer? It's more or less given in the first season and the beginning of season two that it's the mysterious demonic Humanoid Abomination BOB, but BOB just so happened to be inhabiting the body of Laura's father, Leland.
  • Veronica Mars: Cassidy "Beaver" Casablancas has about half of the tropes applying to him spoiler-tagged.
  • The main focus of Sophia in The Walking Dead is about her being lost and turning into a walker.

    Manhwa 
  • The demon Infinity in Ciel The Last Autumn Story, due to the deaths and possession surrounding its first appearance completely changing the course of the plot.

    Meta 
  • In works pages, some tropes themselves in the right context are Walking Spoilers, such as some Death and Ending Tropes. For example, in a Character Page, seeing "Disney Death" under a certain character is almost a dead giveaway that they will survive at least one apparent death. Subverted Disney Deaths are possible, but not common.

    Multiple Media 
  • Mata Nui from BIONICLE, two-fold: first, the story's biggest secret was that he was, in fact, the universe-sized robot that the first 8 years of storyline took place in/on. Second, he only came into the forefront as a character after being usurped by the Big Bad. By talking about him, you not only reveal his identity and nature but also that The Bad Guy Wins at the end of the first Myth Arc.

    Role-Playing Games 

    Theatre 
  • Charlie and the Chocolate Factory (the 2013 stage musical) has several Canon Foreigner minor characters added to the first act — and one who seems to be one. That would be the elderly tramp at the junkyard, who performs a small but vital role in encouraging Charlie Bucket to use some dropped money to buy a Wonka Bar that turns out to have the last Golden Ticket in it. In the show's final moments it's revealed that he was actually Willy Wonka in an elaborate Wig, Dress, Accent disguise, a big twist on the familiar story. Since the show does not Cast as a Mask, the tramp isn't mentioned in the cast list, further concealing the spoiler to the casual observer.
  • In "Sweeney Todd:The Demon Barber Of Fleet Street", after Sweeney Todd comes ashore in London, he is approached by a half-mad, disheveled beggar woman that claims to recognise him. Later she shows up to tell Anthony about Joanna and Judge Turpin and makes herself a nuisance around the pie shop, babbling the suspicious smoke and scent. It turns out that she is actually Sweeney's wife, Lucy, whom he was led to believe have swallowed arsnic and died after being raped by Judge Turpin. Sweeney kills her when she wanders into his tonsorial parlour (and her past home) to get her out of the way before the Judge arrives. After he realises what he's done, he angrily confronts Mrs. Lovett, who admitts she knew Lucy lived. In a rage, he throws Lovett into her own oven and holds Lucy one last time, before accepting death.

    Video Games 
  • Pokémon
  • 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.
  • In Dragon Age: Origins, every mention of major villain Teyrn Loghain Mac Tir as a possible Player Party member is always covered in spoiler tags because the very fact that he can become one is a major plot twist. When that is not possible, he is conventionally referred to as "Secret Companion".
  • 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 user 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'.
  • The 16th playable character in The Reconstruction, Tezkhra, is first heard of as the god worshiped by certain groups of shra.
  • Mass Effect:
    • Sovereign as the true Big Bad of Mass Effect 1 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.
  • Xenoblade
    • Damn near every character except for maybe Reyn and Riki, although Fiora is by far the most obvious one considering she was implied to have died a few hours in but got turned into a Robot Girl instead.
    • 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 Final Boss, but one of the two gods of the world and the Monado itself!
  • 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.
  • BlazBlue:
    • It's nigh-impossible to talk about Hakumen without revealing that BlazBlue: Calamity Trigger takes place inside a "Groundhog Day" Loop, and that Hakumen is Jin Kisaragi from a previous iteration of the time loop.
    • Saya appears to be Ragna and Jin's dead little sister. Turns out that she's actually The Man Behind the Man.
    • The third game reveals Izanami, who is possessing Saya and betrays Relius and Terumi who were Unwitting Pawns to her as well as taking over as the Big Bad.
    • The mild-mannered pacifist Captain Hazama was one himself until the trailers for Continuum Shift outed his secret.
    • Mu-12 was one as well, until the Continuum Shift II trailer casually showed Noel transforming into her.
    • Izayoi for Chronophantasma continues the tradition of each game having one such character introduced.
  • 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.
  • 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.
    • 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.
  • Joshua, and, to a lesser extent, Hanekoma in The World Ends with You. Kitaniji too, as you don't really learn his real role in the plot until the very end. And Eri to an extent, as merely describing her appearance can spoil a significant plot twist regarding Shiki.
  • A few Kirby villains can fall under this trope, such as Magolor from Return to Dream Land, Marx from Kirby Super Star, and Queen Sectonia from Kirby: Triple Deluxe.
  • 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.
  • Knights of the Old Republic:
    • Revan being the Player Character of the first game 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.
    • The second game has 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 biggest examples would be Darth Jadus, who turns out to be the Big Bad of the Agent story's Act 1, and Hunter, who is not only the final boss of the Agent storyline, but also revealed to be a woman.
    • With Revan and the Exile making final performances in the game, there are a couple of flashpoints that are nothing but spoiler tags.
  • 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. 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 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 
  • 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.
  • 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. 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.
  • 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 Angels Rooms, who formerly just gave you an item 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.
  • 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.
  • Tiki Tong in Donkey Kong Country Returns. If you lose a life in any level, you get a silhouette of the 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.
  • 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.
  • 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.
  • 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.
  • 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...
  • MOTHER 3
    • The Masked Man had many of his tropes spoilered because he was actually Lucas' brother Claus. This warranted a hard split between the Masked Man's tropes and Claus' tropes.
    • Porky, since before he appears there's little indication that the game's plot is actually directly connected to the previous game.
    • The first game had George, Maria and Giegue, and their connections to the main character.
  • Persona 4
    • Namatame and Izanami. Both were introduced in the very beginning of the game, but their characterization was so minor that the player is likely to have forgotten them completely. The revelation of what Namatame did marks the beginning of the point where the game becomes a conga line of plot twists, and 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.
    • Tohru Adachi is the murderer. The amount of tropes that comes with this revelation is just staggering, to the point that the post-reveal tropes about him were moved to a different page.
  • Persona 3 has Ikutsuki for being Evil All Along, Ryoji for actually being Death, Aigis for sealing Death inside the protagonist 10 years ago, the protagonist's homeroom teacher Ms Toriumi, since it's pretty much impossible to talk about her without mentioning she's actually the Hermit Social Link.
  • In E.V.O.: Search for Eden, the Final Boss and Big Bad, Bolbox, as well as the Bigger Bads 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.
  • 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.
  • 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.
  • 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 had been dead for almost twenty years (Well, he wasn't, but that's only revealed then and there) 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. 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.
  • The Legend of Zelda
  • Everything about Oersted from Live A Live, other than maybe the first half hour of his chapter, is a pretty big spoiler.
  • 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.
  • Sonic Heroes
  • 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. By itself, that might not matter, but the shapeshifting doesn't occur until about 1/3 of the way into the game and is meant to be a VERY unexpected plot development; it's not something that the player is intended to know ahead of time.
  • 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.
  • Killabilly from Lollipop Chainsaw, who appears only after Juliet has killed all five Dark Purveyors.
  • 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. Technically referring to her as Angel rather than The Guardian Angel is itself a spoiler.
  • Super Mario Bros.
    • Dimentio from Super Paper Mario is near impossible to talk about without revealing SOMETHING about his motives.
    • 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.
    • 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.
    • Super Mario Sunshine features the true identity of Shadow Mario, who goes on to become a recurring character in the series.
  • 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.
  • The Walking Dead. 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 appereance 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.
  • Assassin's Creed
    • Haytham Kenway was successfully kept a secret from audiences for years up until the game's release, yet the first three sequences are played as him and not the main character, his son Connor. The end of the third game 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.
  • Project X 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, 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 a Villain Protagonist (albeit unintentionally) 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.
  • No less than four of the love interests in Hatoful Boyfriend have a ton of associated spoilers for the Kudzu Plot of the darker routes and backstories. Most of these come up in fandom discussion and/or sequels and manga expansions. In particular:
    • Nageki Fujishiro is the ghost of a mourning dove who immolated himself five years prior to the game to prevent the virus he carries being used as a biological superweapon.
    • Dr. Shuu (a false identity) works for the Hawk Party to destroy humanity out of affection for Ryouta Kawara's late father.
    • Nanaki Kazuaki was "assisted in suicide" and his identity stolen by Nageki's childhood friend Hitori Uzune to seek revenge for Nageki's death.
    • Yuuya Sakazaki is a Teen Superspy working for the Dove Party.
  • 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.
  • 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.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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 Napoleon 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.
  • 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.
  • It's virtually impossible to talk about Ren and Lindow A.K.A Corrosive Hannibal from Gods Eater Burst without completely spoiling the plot.
  • 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.
  • 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.
  • 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.
  • In Ratchet & Clank: Size Matters, the little girl who likes to take pictures, Luna, is ultimately revealed to be the The Dragon to Otto Destruct. Not only that, she's actually revealed to be a genderless warship/puppet built to lure Ratchet into a trap.
  • In StarCraft II, the very fact that Samir Duran appears in the game at all, along with Alexei Stukov. Also the existence of Bigger Bad Amon, since he has basically run the entire plot since Day 1, with the exception of the terrans.
  • 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 appears as an Ill Girl that her brother Mustafa takes care of. 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • Isabela Keyes becomes this big time in Dead Rising 3.
  • In Disney Princess Enchanted Journey, Big Bad Zara appears only for the final boss fight.
  • FTL: Faster Than Light has the Crystal race, which is designed to be a secret in-universe and out.
  • 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 Blackwell Series has Madeline. Very little is known about her, and even that small bit of information is full of spoilers.
  • On July 14th, 2014, Nintendo released an announce trailer for three characters who would be in the fourth Super Smash Bros. game: Captain Falcon, and Robin and Lucina from Fire Emblem Awakening. While Falcon is a veteran to the series, and Robin is the customizable Player Character from Awakening, Lucina's trickier to explain due to the fact that her role is a major plot point and would spoil a big part of the game.
  • Markinson in the first Syphon Filter was Big Bad Rhoemer's handler, and the first indication that the whole Agency is rotten.
  • In the Ace Attorney series, each of the games' main antagonists count, as well as many of the murderers in each individual case. Naturally, discussing much about them would reveal that they're responsible, as well as, in some cases, their true personalities.
    • Probably the biggest example is Bobby Fulbright from Dual Destinies, who is introduced 5-2 as the Inspector Lestrade role that Gumshoe and Ema filled. Then the game drops a bombshell by revealing that he's actually Phantom, an emotionless agent who murdered Fulbright prior to the story's events and stole his identity, as well the killer of both Clay Terran and Metis Cykes. This is revealed very late into the game's events, but is a massive twist, especially since Fulbright is one of the last characters one would suspect as the Big Bad given his role and much of the Foreshadowing towards the revelation is very subtle.
  • Five Nights at Freddy's:
    • Golden Freddy. Knowing even a little bit about him can ruin the surprise on the rare chance you run into him.
    • The Puppet in the sequel. Not so much from a gameplay perspective, but from a backstory perspective it turns out to be the Big Good.
    • The sequel also has Shadow Toy Bonnie and Shadow Freddy, two rare animatronics with no explanation to them but like Golden Freddy in the first they crash the game.
    • Springtrap in the third game is a massive one. It's hard to describe it without giving away the fact that the corpse of the Serial Killer is inside the suit. However, thanks to a few randomly-occurring boot-up screens, it might eventually become a case of It Was His Sled.
  • 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.
  • Dragon Fable: 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.
  • Jergingha in The Wonderful 101, the leader of the GEATHJERK, goes un-mentioned until the fifth (of nine) chapter.
  • Raziel from Legacy of Kain, when it's revealed he is the spirit of the Soul Reaver.
  • 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.
  • 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.
  • 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.

    Visual Novels 
  • Nine Hours, Nine Persons, Nine Doors
    • June and Ace, as both turn out to be the primary antagonists (and the true protagonist in June's case) in roundabout ways.
    • It is impossible to describe Santa's motivations or character arc without revealing that he's June's brother and pretty much everything he does in the game is to save her past self. And that reveals that supernatural abilities exist in the world of 999, which just opens up another can of worms.
    • The sequel, Virtue's Last Reward, has a few as well. Luna and the Mysterious Old Woman are almost entirely whited out.
    • Because Tenmyouji was actually a character in the first game as well as VLR, even mentioning his first name is a spoiler.
  • Higurashi: When They Cry
    • Hanyuu is the real Oyashiro-sama, despises violence, and tries to change fate over and over, hence the reason for the repeating worlds. In the anime, they censored out Rika's screams to Hanyuu as Hanyuu stabbed herself in front of Rika and Shion, and made you believe that only those who heard Hanyuu were crazy (Rena, Keiichi, etc.), or else too high up on the Hinamizawa Syndrome scale. Then there's how the form she takes in the anime isn't even her real form (add about 10 years to that and you get her true form).
    • Its difficult to talk about Shion without spoiling Watanagashi-hen or Meakashi-hen.
  • In Umineko: When They Cry, Episode 7 is filled to the brim with these, with Will, Lion, Beatrice Castiglioni, and most importantly Yasu (as well as Clair, who serves as a representation of Yasu). Episode 8 has the real Tohya Hachijō.
  • Dangan Ronpa
    • Several characters are spoilers just by existing. Genocider Syo, Mukuro Ikusaba, and Alter Ego, in addition to the original headmaster of the academy. Also, using pronouns when referring to Chihiro is difficult to do without spoiling his status as a cross-dresser.
    • Yasuke Matsuda from Dangan Ronpa Zero, full stop. Very little can be said about him bar what we know initially without giving away that he is the conspirator and lover of Junko Enoshima, the series Big Bad. This will subsequently require you to reveal that the books heroine Ryouko Otanashi and Enoshima are in fact the same person, pretty much giving away the entire plot of the book.
    • For Super Dangan Ronpa 2, we have Izuru Kamukura. Pretty much everything about him but his name is a spoiler to either this game or Dangan Ronpa 0.
    • There's also the Super High School Level Impostor. His Byakuya Togami disguise is a spoiler for Togami surviving the first game, and the Impostor's existence is a spoiler in and of itself, as until his identity is revealed the game leads you to believe he is the real Togami - drastic weight gain, sudden personality change, and death included.
    • Similarly Komaeda Nagito. Just trying to explain this guy is impossible without spoiling something, given that he already reveals a large change in personality in the first Chapter of the game and it just goes on from there.
    • Monaka from Absolute Despair Girls, is not as nice as she first appears, but how bad she really is, as well as her true plans and involvement in the game's backstory, aren't apparent at first. It's thus difficult to talk about her without spoiling anything.

    Webcomics 
  • Drowtales
    • Diva'ratrika Val'Sharen, Liriel and "Diva" due to the fact that they are all technically the same person, with the last one being the final result of a Fusion Dance of the aura (soul) of Diva'ratrika with her servant Ragini, with Liriel being the incomplete fusion. All of which spoils the fact that Diva'ratrika has been dead since nearly the start of the story, with the coup that eventually killed her occurring in the story's prologue.
    • Most things about Kalki Nidraa'chal. While she actually appears in the Prologue of the story, it takes 25 chapters for us to find out what her deal is. And while quite a few people had already guessed that she was really Snadhya'rune Vel'Sharen's daughter, even with a Shrug of God that while she was Snadhya's daughter Snadhya had never given birth, chapter 25 was a Wham Episode in that the explanation of how this was possible also revealed other gigantic spoilers: Mainly, that the Val'Jaal'darya have not only figured out how to carry a child outside of the mother's womb, but also make a child have two mothers. And Kalki's second mom? None other than Mel'arnach Val'Sarghress, the protagonist Ariel's real mother, which basically makes Kalki related to half of the important cast members in some form or another.
    • Relatedly, merely the names of most revealed members of the Nidraa'chal are blacked out on the character page because it reveals that there are sleeper agents in nearly every clan, both major and minor, and that despite other characters saying so not all of them are tainted.
  • Rachel from Tower of God. She is initially just the girl Baam was chasing, but after she tried to kill him and he has been declared dead, the whole plot goes off into another direction. It's impossible to have any sort of meaningful conversation about Rachel without mentioning these spoilers.
  • Homestuck
    • Doc Scratch is a near-omniscient being who's the First Guardian of the trolls' universe, while it was somewhat of a late revelation that the trolls live on another planet. Scratch is also the precursor to Lord English, a mobster who turns out to be the Big Bad.
    • The post-scratch kids in the sense that their very existence is a pretty massive spoiler. Same with the pre-scratch trolls.
    • Calliope and Caliborn, particularly after the former's true appearance is revealed. So shocking author Andrew Hussie even asked people not to post the image for a few days and provided a fake image for people to use instead.
    • Gamzee, for the twist of him seemingly starting out as one of the biggest joke characters before turning into a murderer that kills off two of the more minor trolls. And then he goes on to be declaired "the most important character in Homestuck" in-universe, and in Act 6 he has a habit of showing up in the strangest and more sudden places, both to hinder up the post-scratch kids and to assist the Big Bad in his session. And he's also the reason for Li'l Cal's existance. Because of all of this, most of what's written on him on this site is spoilered out.
    • Aranea. The woman behind the man in some (exactly how much isn't entirely certain) of Gamzee's actions, the one to answer the question of who gets the Ring of Life, being a pre-scratch troll as mentioned above, and double subverting the expectations one would have for a Serket.
  • "Cloney" of Sluggy Freelance is one that is largely a spoiler if you use that name. From late 2001 to 2002, Torg and Riff, after returning from the Punyverse, thought that Aylee had undergone a Face-Heel Turn as her latest evolution. It turns out that it was actually an evil clone of Aylee made by Hereti-Corp, and referring to "Aylee" during this time as "Cloney" spoils this twist. Technically, this character was called "Aylee" by everyone including herself, even if that was only because they (including herself) mistook her for the other Aylee. The name "Cloney" was introduced retrospectively.
  • Vampire! Durkon, aka the High Priest of Hel, from The Order of the Stick. If a main character being killed and brought back as a vampire isn't enough, there's the further twist that he isn't any version of Durkon, even a corrupt one. He's a spirit from the Norse underworld walking around in Durkon's corpse.
  • In Ozy and Millie Locke a fox kid who is the same age as Millie, was revealed to be Millie's backwards aging Dad from another dimension. is one of the most compelling and dramatic arcs in the entire series. This is usually the story arc everyone mentions, though many fans respect the comic too much to spoil.
  • The entire Cubi race from Dan and Mab's Furry Adventures , since the reason they have the prominence they do is the Chapter 14 reveal that Dan is one.
  • The authors of Darths & Droids avoided mentioning Annie's name for a while, so people wouldn't guess that she was going to end up playing Anakin.

    Web Original 
  • Doug Walker in To Boldly Flee. Not The Nostalgia Critic, Doug Walker. The Nostalgia Critic himself becomes this in post-To Boldly Flee canon.
  • Red vs. Blue: Due to the nature of the series, almost everyone could be considered a Walking Spoiler. Here are the highlights:
    • The original, human Allison is the biggest spoiler in the series, as she reveals the truth about the Director and everyone caught in his planes.
    • Church comes back as a ghost. This eventually became It Was His Sled, then two of the biggest twists in the series were focused on him.
    • Tex due to having the same plot twists Church has, and her connection to Allison.
    • The Director for his name and being a template that the Alpha was based on.
    • Agent Carolina in Season 10 onward. Up until the final few seconds of Season 9, she was assumed to be dead, so her appearances in the present day are impossible to talk about without spoiling that she, in fact, is truly not dead at all.
    • Mystery Blue Guy/Blue/The Blue Freelancer's true identity of Captain Butch Flowers (and Agent Florida!), as revealed at the end of season 10.
    • Felix in Seasons 11 and 12 is built up as a good guy. Then he is revealed to be Evil All Along.
    • Control, the person who hired Locus and Felix to wipe out Chorus's people. Its spoiler to even mention that they're part of a third party in the Chorus Civil War.
  • As of version 5, Tracen Danya has taken up this role in Survival of the Fittest, in that while he was mentioned as early as v1, it's hard to mention his current status without mentioning his taking up the mantle after his father (the Big Bad starting from v1) who died partway through v4.
  • Pretty much everything about Scion is a massive spoiler in Worm.
  • Almost everyone in Marble Hornets.
  • Firebrand in Tribe Twelve. Assumed to a malevolent member of collective, Firebrand's Heel-Face Turn in INTERCEPTION and reveal as future/alternative timeline Noah make his identity a major spoiler.
  • Dr. Josh Sharman of LightningDust. His placement on the character page alone reveals his true status

    Western Animation 
  • My Little Pony: Friendship Is Magic
    • Queen Chrysalis and the Changelings. Their very appearance is a spoiler, as promotional material for the season 2 finale made the episode seem to be about wedding hijinks.
    • To a lesser extent, Matilda the donkey from "A Friend in Deed". She shows up near the beginning of the episode apparently just to show how well Pinkie Pie knows her friends and neighbors, then she turns out to be very important to resolving the plot of the episode. (The Genre Savvy, however, might realise how important a female donkey would probably be in an episode featuring a male donkey as a major character.)
  • The Legend of Korra
    • Hiroshi Sato, whose part in the Mid-Season Twist turns his entire characterization on its ear.
    • Everything about Amon is a spoiler, especially him really being Noatak, one of Yakone's children.
    • Season Two has Unalaq, whose evilness was sort of obvious, but not to the extent of how far-reaching it was. But it also had Varrick, whose Mid-Season Twist came out of virtually nowhere.
  • Transformers Prime
    • Breakdown, whose death and implied rebirth as Silas' new body have seemingly caused Hasbro to delay and deny the existence of his toy. (Though, that's also for budget reasons. The mold was created by Takara to use at their $65 USD pricepoint, rendering it in "financial no-man's land" compared to Hasbro's $22 USD price point for the same figure-class.)
    • Unicron. It's a little hard to talk about him without revealing that in this continuity, Earth formed around him.
  • Shockwave in Transformers Animated, right down to him being Shockwave, as he was undercover as the Autobot Longarm.
  • In Beast Wars, Tigerhawk's mere existence lessens some of the tension in season 2, despite not appearing until the tail end of season 3 (also the last season). Similarly, the existence of the Dinobot clone spoils the Heroic Sacrifice of the original dinobot, as well as how the finale plays out.
  • Michael Korvac in The Avengers: Earth's Mightiest Heroes, since the Avengers don't learn about the murders he committed until relatively late into episode #32.
  • Star Wars: The Clone Wars
    • The fact that Darth Maul appears at all is a massive spoiler.
    • To a lesser extent, General Pong Krell being a traitor.
  • Star Wars Rebels
    • The fact that Ahsoka Tano, who first appeared in The Clone Wars, appears at all is a massive spoiler.
  • Arsenal in Young Justice: it's very hard to describe him in any detail or even reveal his real name without giving away something about Red Arrow's Tomato in the Mirror twist from season 1.
  • Mayor Jones, Angel Dynamite, Mr E and the Chileses in Scooby-Doo! Mystery Incorporated. Even knowing that most of the tropes around these characters are spoilers probably counts as a spoiler! (Well, except Mr E, who's clearly hiding something from the beginning.) There's also the simple existence of the Bigger Bad, whom turns things inside out and upside down by their mere presence.
  • Pumyra is this in ThunderCats (2011) due to being The Mole/Evil All Along.
  • Ed, Edd n Eddy has Eddy's brother. He is made out to be The Ace by Eddy, but when he actually appears in The Movie, it turns out that couldn't be farther from the truth.
  • Green Lantern: The Animated Series: Aya is this for almost the entire second half of the series. She sacrifices herself to save Razer, comes back, gets dumped, destroys the Anti-Monitor, does a Face-Heel Turn and becomes the Big Bad, tries to go back in time to alter creation, and then, after all of that, she sacrifices herself again to save the universe. Good freaking god.
  • The Blue Spirit of Avatar: The Last Airbender.
  • Family Guy has Vinnie Griffin, spoiling Brian Griffin being killed off.
  • Adventure Time:
    • Simon Petrikov. Nearly everything about him is a spoiler. He's Ice King in the past over 1,000 years ago before the mushroom war, he mentions a real country & references a real show, he takes care of Marceline when she's a little kid, & he reveals that his crown protects him but makes him crazy. Every one of those things is a spoiler because Ice King starts out seeming like an evil villain, everyone calls the planet Ooo, Marceline doesn't seem like she'd associate with Ice King, & these facts explain a lot of Marceline & Ice King's odd behavior which is the main thing that makes them interesting.
    • Betty Grof, Simon's fiancée. Simon believed she was so scared by his behaviour as the Ice King began to takeover his personality that Simon never saw her again, and then she died during the Mushroom War. However, her appearance in "Betty", shows that she jumps through a time portal to be with Simon, and is now working to turn Ice King back into Simon for real.
    • Shoko. It's hard to talk about her without mentioning that she's Finn in a past life, that she dies at the end of the epsiode, that she's the ghost Finn saw in The Creeps, that yet another version of Finn (Shoko in this case) had a replacement arm, that Princess Bubblegum & some of her citizens are extremely old, or that Princess Bubblegum made her citizens.
  • Mal from Total Drama All-Stars, Mike's latest revealed personality over a season after the others and the Big Bad for that same season.
  • Lapis Lazuli from Steven Universe reveals the fact that there are corrupted Gems.
    • In a similar vein, Peridot shows that whatever happened in the Gem Homeworld is extremely distressing, to the point where Garnet smashes the warp pad so they can stay stranded.
    • Ruby and Sapphire's mere presence spoils that Garnet is their fusion.
  • Gravity Falls:
    • Bill Cipher. He's what all of the Eye of Providence symbols were leading up to, and has a very strange, currently unknown end-goal that could lead to something bad (and possibly apocalyptic) happen later in the series.
    • Fiddleford Hadron McGucket was the assistant to the individual who wrote the journals that chronicled the bizarre happenings of the town. He became racked with guilt over his knowledge of the journals' secrets and created a device that erases selective memories, and quickly began to overuse it to the point where he lost most of his memories and sanity.
    • The Author himself is this to an extent. His existence itself isn't a spoiler but his identity most certainly is. In "Not What He Seems" it's revealed that he's Stan Pines' twin brother.
  • Numbuh 74.239 of Codename: Kids Next Door is a member of the KND science team and initially was just another one of the recurring characters of the many, many KND operatives. He got a big boost of importance in the sixth and final season as part of the unfolding "Splinter Cell" arc, and the viral campaign to get a KND sequel series takes this even further with the reveal that he was an undercover Galactic: Kids Next Door operative all along.