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Secret Keeper

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Max: How do you save the world and not tell anybody?
Terry: I can tell you. You can tell me. That's why I'm glad you found out, partner.

Your hero has a dirty little secret that is central to the character and the show's main plot. They might be a superhero, or he might have a lab in his bedroom, or she might be a witch. There will sometimes be one regular Joe who knows about the hero's secret, and will also keep it secret. The Secret Keeper can be family, though it's very uncommon for them to be parents. It may require a Secret Relationship, if public knowledge of the relationship is a danger to the secret.


Often, the existence of a Secret Keeper is only hinted at, rather than explicitly revealed to either the hero or the audience.

The phrase originated in Harry Potter, where the Fidelius Charm hides a secret within a living person's soul (that person would then become the "Secret Keeper"); everyone else in the world other than the chosen person would be unable to learn the secret unless directly told of it by the Secret Keeper. Even if they originally knew the secret, the details would become muddy in their minds unless reminded by the Keeper.

See also Tongue-Tied, for when a character is forced to keep a secret. See also The Confidant, someone who keeps non-heroic secrets. For cases in which the hero doesn't know that someone knows their secret, see Secret Secret-Keeper. Frequently discovers Keeping Secrets Sucks, and is witness to The Masquerade Will Kill Your Dating Life.



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    Anime & Manga 
  • In Baccano!, Ronnie Schiatto serves as Maiza's secret keeper and only constant companion up until everyone in the Martillo family winds up immortal, and Maiza catches on that that Ronnie is a lot less human than he originally presented himself as, at which point the roles reverse.
  • In Bakuman。, Moritaka Mashiro, after finding out that his fiancee Miho Azuki's mother Miyuki once loved his uncle, Nobuhiro, and that Miho is unaware of this, asks Miyuki not to tell her. She agrees and asks Moritaka's partner Takagi to do the same. This comes back to haunt Moritaka later, as Miho becomes angry with him for keeping it from her, and does not believe they should have secrets between them.
  • Bleach:
    • Both Isshin and Karin are aware of Ichigo's activities as a shinigami, but don't let on. Isshin later reveals his knowledge to his son.
    • Tatsuki, Keigo, Mizuiro and Chizuru are also aware that something is happening but tell nobody outside their circle. Eventually, Ichigo admits everything to them.
    • Kon became a reluctant secret keeper for Isshin. He found out hundreds of chapters before Ichigo that Isshin was a shinigami, but Urahara and Isshin both swore him to secrecy.
    • Yumichika, Renji, Keigo, Komamura, Iba, Akon, Mayuri and Ichigo are all secret-keepers for Ikkaku's bankai. Mayuri's a subversion: he accidentally told Ichigo before remembering it's a secret, and doesn't care he revealed it. Ikkaku doesn't know Ichigo knows.
    • Hisagi is the sole living person who knows the truth about Yumichika's abilities. Specifically, Yumichika's shikai is actually a kido-type that drains spiritual pressure, something that he keeps secret so as to fit in with the combat-oriented eleventh division.
    • The Ishida family is such an unknown to the Vandenreich that Yhwach used Exact Words to lie with the truth, ensuring the Stern Ritter learned only of Uryuu Ishida's existence. While it's implied Haschwalth knows about the family, it's confirmed that Quilge Opie definitely knew all about Souken and Uryuu Ishida, and the mysterious Ishida family secret.
  • Bloom Into You:
    • Near the start of the series, Yuu learns the truth about Touko- that she's far more emotionally vulnerable than she lets on, and had to work hard to become the highly respected honor student and Student Council President of the school. Unbeknownst to Touko, her best friend Sayaka also knows this, but after Touko learns that her sister may not have been the person she thought she was, Sayaka starts openly talking with Touko about Touko's sister.
    • Sayaka also knows that Riko Hakozaki, a teacher at her school, and Miyako Kodama, the owner of a local cafe, are a lesbian couple.
    • Maki happens to witness Touko kissing Yuu, but keeps it secret on Yuu's request.
    • Yuu's sister Rei is one of the first to realize that Yuu and Touko have feelings for each other, and supports their relationship. In the final chapter, both she and Yuu's friend Natsuki know that Yuu and Touko are dating.
  • In Boarding School Juliet the forbidden romance between the two leads is only known to their respective Childhood Friends Char and Hasuki, joined by Inuzuka's brother Airu and mother Chiwa later on, with the last one who shows her full support. Inuzuka's rival, Maru, knows "Julio" is a girl and keeps it a secret to her request, but doesn't know her identity until Leon exposes the couple to the entire school in chapter 85.
  • At the start of Boku Girl, Mizuki's best friend Takeru is the only person who knows he's been Gender Bent into a girl. Later, Takeru's sister Mei is brought in on the full secret. Mizuki's roommate Yamada knows Mizuki is physically female, but thinks he's a girl masquerading as a boy. As far as Mizuki knows, the same is true of classmate Loki, though in that case Loki is the cause of the Gender Bender. As of chapter 38, Mizuki's crush Fujiwara has also been told the full truth.
  • Tamura and Ryousuke from Bokura no Hentai crossdress for various reasons. Ryousuke threatens Marika's life in the second chapter for her to keep his secret. Later in the manga Ryousuke's secret becomes known to his girlfriend, who asks him why he does it. This leads to his mother getting sent for mental health treatment, as his reason for crossdressing is because he's pretending to be his deceased sister for her.
  • Captain Tsubasa:
    • In the anime version of the junior high arc, Sanae becomes Takeshi and later Hyuuga's secret keeper in regards to Hyuuga being benched by his coach, rather than injured or ill. This is because the first directly told her in hopes to have her talk to Tsubasa so he'd intervene (but she refused, since she saw it as something Tsubasa shouldn't be concerned about, and Takeshi apologized for potentially putting her in a very awkward position); later Sanae and Hyuuga bump into each other and she tells him what happened with Takeshi, Hyuuga takes it well and neither says anything to others.
    • Tsubasa becomes this in the Shin manga and OAV's, when Wakabayashi tells him that his unexpected harshness towards the Japanese team in the mini-tournament they're in is a mix of Tough Love and pretending to be a jerk. Tsubasa promises to not say anything and keeps his word until Hyuuga, who had become a Secret Secret-Keeper, reveals the deal before the final match.
  • Tomoyo Daidouji, Syaoran Li, Meiling Li, Toya Kinomoto, Kaho Mizuki, and eventually Yukito Tsukishiro for Cardcaptor Sakura.
  • In Classi9, Mozart is the only one to officially know about Rentarou's true gender, and if anyone finds out, he will be expelled with Ren.
  • Code Geass:
    • Since C.C. gave Lelouch his Geass and later installed herself in his bedroom, she is a Secret Keeper (and sometimes Body Double) for him and him Zero activities.
    • Lelouch gains many more Secret Keepers as the second season progresses with the likes of Kallen and his own maid, Sayoko, but after the Grand Finale, only a handful of people in the world know that Zero has been replaced by Suzaku Kururugi (including Kallen, Nunnally, and probably others like Ohgi, Kaguya and the rest of the highranked Black Knights) .
    • On another level, Milly Ashford and Suzaku Kururugi are the only ones of Lelouch's friends who are aware of his and Nunally's royal heritage, since the former's family are the ones sheltering them and the latter lived with them during their initial exile.
  • Misa, Mikami and Takada all knew Light's secret at some point and helped him in his schemes in Death Note. Ryuk and Rem knew it too, but as invisible shinigami, most of the time they weren't even able to tell anyone if they wanted to.
  • Dr. Agasa, Yusaku and Yukiko Kudo, Phantom Thief Kid (dubiously canon), Heiji Hattori, Ai Haibara, Vermouth, Eisuke Hondo, and much later Shuuichi Akai (as Subaru Okiya) in Detective Conan.
    • Well, actually Ai Haibara and Vermouth are part of the secret. In fact, it could be argued that they are directly responsible for it, so they may not qualify.
    • The trope gets invoked in a nasty manner in a filler case. A girl named Shouko Utakura finds her friend Sawanami dead and, due to his dying clues, she realises that their common acquaintance Mifune is the murderer. However, Shouko is Mifune's Unrequited Tragic Maiden and decides to keep this a secret... but commits the huge mistake of actually telling Mifune that she knew the truth, but wouldn't snitch. Mifune, who had killed Sawanami because he was involved in his girlfriend's death and now believes Shouko had something to do with it too, thinks she'll denounce him anyway and a few days later he strangles her to death, having a breakdown when he's uncovered as the killer and another woman explains Shouko's true feelings.
    • It's strongly implied that Rei aka Tooru Amuro is on his way to learn Conan's secret identity. At the very least he already knows that Conan is behind Kogoro's success.
  • Kazumi and Tatsuya in Devilman Lady are the only ones who know that Jun is becoming a demon.
  • Don't Meddle with My Daughter!: At the end of "Honey, Hold me Tightly!", a flashback shows Mei has known about Clara's secret identity as the Eighth Wonder, from the beginning. Clara had received a call sign on her smartphone and ran out of class, so Mei followed her into the hallway, where she saw her changing into her costume. From then on, Mei kept her safe by not telling anyone.
  • Sena's title Eyeshield 21 is kept by Hiruma, Kurita, Panther, Shin, the Ha-Ha Bros.
  • The whole premise of Fruits Basket is Tohru Honda serving as the Secret Keeper of the Sohma family if she wants to continue living with them, leaving even her two closest friends out of the loop — even though one of them has Electric Psychic Powers.
  • In Genshiken it is implied that Ohno knows about Madarame's crush on Saki, as she tries to covertly give him pictures of Saki in cosplay outfits.
  • Granny Girl Hinata-chan: For reasons even she isn't sure of, Hinata has kept quiet about remembering her previous life as an old woman. While Moka guesses it in the first chapter, Sakuya is the only person who knows Hinata reincarnated because she has, too.
  • Hajiotsu has Otogi reveal to Shuuko that he's aware that the whole relationship of Himari and Kai is based off of a test of courage. When she begs him to not tell Kai, that Himari should be the one to tell him, Otogi goes with it.
  • Despite being in mysterious competition with one another, the members of the SOS-dan in Haruhi Suzumiya, besides Haruhi herself, fiercely guard each other's secret origins.
  • Himechan No Ribon has Daichi become the secret keeper for Hime-chan about her ability to magically transform after she had to do it in front of him to save somebody.
  • Inuyasha:
    • Kagome's mother, brother and grandfather keep Kagome's time-traveling a secret. This leaves Souta to pick up the slack for Kagome at school (ensuring she knows when exams are and what homework she needs to do) and her grandfather creating hilarious and embarrassing medical conditions to both excuse her from school and prevent her friends from visiting her.
    • Toutousai. Although it was obvious he knew the truth about Tessaiga what had been hidden much better were the secrets he was keeping about Tenseiga and Bakusaiga.
  • Kaguya-sama: Love Is War:
    • Fujiwara is a reluctant one for Shirogane concerning his lack of athletic coordination, non-existent dancing skills, and inability to sing. As she knows that Shirogane has an image to uphold, she cannot bring herself not to help him both out of pity and her own self-respect, which always come at a great toll for her because he's an awful, awful learner.
    • The truth behind Ishigami's suspension in middle school is kept a secret for the most part out of respect for him wanting to keep Otomo from finding out the truth, though them members of the student council (sans Miko) know the truth and informed the various club leaders in order to insure that Ogino would face justice for his actions.
    • Hayasaka's status as Kaguya's personal valet is supposed to be a secret from their classmates, hence why they rarely spend time together during school hours. The only student who knew the true nature of their relationship prior to Hayasaka quitting was Kaguya's cousin Maki.
    • There is an ever growing list of people who know about Kaguya and Shirogane's Secret Relationship. In order: Hayasaka, Shirogane's father, Kashiwagi, Maki, Kei, Onodera, and Miko. Hayasaka's role as such is extra significant since she's under strict orders to report everything about Kaguya to the main house and yet she still managed to keep that one thing a secret.
  • Kaiju Girl Caramelise: When Kuroe Akaishi starts transforming into Harugon, only her mother Rinko knows that she and the monster are one and the same. Downplayed with Koutarou Hibino, who knows about the Involuntary Shapeshifting she has been subject to since childhood but not that she is Harugon.
  • In Karin, Kenta Usui ends up pretty much strong-armed into becoming one for the Marker family when he learns that their middle daughter Karin is a vampire.
  • In the classic anime Kimagure Orange Road, blood members of the Kasuga family all had psychic powers and a desire to keep them a secret from the general populace. This necessitates that anyone who marries into the family (such as Kyousuke's father) must become a Secret Keeper. The manga takes this to its logical conclusion that members of the Kasuga clan must reveal their powers to those they intend to marry before they can get hitched. Hopefully, if you love them enough to marry them, they like you enough not to blab your secret to the world.
    • The other major secret that Kyousuke has — his budding love for Ayukawa Madoka — is kept by his sister Manami. In the manga, she even explains it to Hikaru, with the iconic "red hat" as proof.
    • The Master of the local coffee shop, Abcb, knows the feelings that both Kyousuke and Madoka have for each other.
  • In Kuttsukiboshi, Aya is this to her friend Kiiko's telekinetic powers. Well, besides being her lover.
  • Subverted with Hayate in Magical Girl Lyrical Nanoha A's. She was fully aware of the Wolkenritter's identities, but they deliberately kept their actions a secret from her since they knew she wouldn't approve.
    • At the end of the season, there's Arisa, Suzaka, and Nanoha's family discovering Nanoha and Fate's secret as Magical Girl Warriors. Reflection reveals that Arisa and Suzuka's parents are also in on the existence of magic (within the movie continuity, anyways). Whether or not Suzuka's older sister Shinobu knows is unspecified, though she probably does.
    • Episode 18 of StrikerS revealed that Teana already knew about Subaru and Ginga's status as combat cyborgs.
  • There are four Muggles in Miss Kobayashi's Dragon Maid who are aware of the existence of dragons: Kobayashi, Takiya, Shouta's mother, and Chloe. The first two have Monster Roommates, the third is in a Muggle–Mage Romance, and the fourth found out when Kanna rescued her from a kidnapping.
  • Athrun Zala in Mobile Suit Gundam SEED Destiny is a Secret Keeper for Meer Campbell, the Body Double standing in for his ex-girlfriend Lacus Clyne.
  • Mobile Suit Gundam: The Plot to Assassinate Gihren reveals that Cecilia Irene was the keeper of the keys for Big Bad Gihren Zabi. She knew all his dirty secrets, ran black operations for him, and kept a lid on anything that might hurt his public image.
  • The existence of mononoke in Mononoke Sharing is supposed to be a secret to the general populace, at least until the ongoing social experiment on whether or not To Unmasque the World is completed. Individual mononoke or their human roommates can issue a formal request to reveal themselves to friends or loved ones, but the potential secret keeper needs to prove themselves to be trustworthy beforehand (performing these tests is actually one of Chiehime's duties).
  • My Hero Academia has the secret of Izuku Midoriya's (and by extension All Might's) Quirk "One For All". Only the other U.A. hero teachers and Naomasa Tsukauchi (All Might's Commissioner Gordon, who found out by accident) knew that All Might turns scrawny when his power runs out before his fight with All For One, and only All For One (All Might's Arch-Nemesis), Gran Torino (All Might's mentor), Sir Nighteye (All Might's former sidekick), Recovery Girl (the U.A. High School nurse), Principal Nezu, and most recently Katsuki Bakugo know One For All is passed down from person to person.
  • In My-HiME, Takumi becomes one for Akira when he first finds out that Akira is the "secret ninja" protecting the school, and later when he finds out that Akira is female.
  • Like Fruits Basket, My Monster Secret revolves around protagonist Asahi keeping the secret that his crush is actually a vampire...and that the class rep is an alien...and more. The issue is that Asahi's reputation is being unable to keep a secret to save his life, but he's determined to keep his crush's, as it was how they became friends.
  • The characters who know that Kiri is the male model, Tatsuki, in Never Give Up are her mother, Tohya, and her best friend, Natsu.
  • Omujo! Omutsu Joshi:
    • The plot kicks off with Shouta's discovery that his classmate Ichigo wears diapers. While no explicit agreement is made between them, Shouta keeps quiet about it and frequently covers for her when a situation stands to embarrass or expose her.
    • Shouta thinks he's also doing this for his childhood friend Morei, after she confesses a secret long held love of diapers to him. This situation is a bit more complicated, as Morei was confessing her secret, long held love for Shouta, and after seeing him with Ichigo thought he had the fetish. She tried to exploit it and doesn't realize the misunderstanding this has caused.
  • A case shows up in One Piece, regarding what really happened between Zoro and Kuma. Aside from Zoro himself, only three members of the crew know the truth: Brook, who saw it happen (since it's next to impossible to tell if a skeleton is conscious or not); Sanji, who heard it from the Risky Brothers and told them not to tell anyone else; and Robin, who used her powers to eavesdrop on that conversation. And Zoro only knows that Brook knows; the other two keep the knowledge to themselves because it would devastate Luffy if he found out, and Zoro didn't do it to be praised anyway.
    • Also, the Gorgon Sisters would sooner die than let anyone find out that they were ever slaves to the World Nobles; only four known individuals have been trusted with the secret. The first three are Silvers Rayleigh, Shakky, and their surrogate mother Elder Nyon, who helped them get back to Amazon Lily after they escaped. And the fourth is Luffy, Hancock's love interest.
  • In Ouran High School Host Club, the whole Host Club keeps Haruhi's real gender a secret since she's working as a Host to pay back her debt.
  • In The Pet Girl of Sakurasou, Sorata is asked to keep one from Misaki regarding Jin. He finds out Jin wants to go to a university in Osaka, not a local one nearby where Misaki was going. Jin says he's going to tell her at some point, and asks him not to tell her about it.
    • Then Misaki finds out about it anyway in episode 11, although it was Fuuka, Misaki's sister, casually mentioning it to Jin, who says she heard it from his mother. Although Sorata comes clean about knowing the secret, Misaki seems more excited by the fact that he turned down her sister, which mean she still has a shot with him.
  • The Pretty Cure franchise has quite a few of this:
    • Fresh Pretty Cure! has Kaoru, Miyuki, and later in Episode 45, the Cure's parents and friends.
    • Heart Catch Pretty Cure has Tsubomi's grandmother, Kaoruko. It also helps that she was a former Cure herself.
    • The Pretty Cure All Stars movies reveal that each of the teams know of each other's identities. Except for the new team, which quickly becomes moot after awhile.
    • In DokiDoki! PreCure, it would seem that Sebastian is the only human who would know the Cures' true identities. That is until in episode 41 that Alice's friend/rival, Reina, becomes one. If that wasn't enough, the Cures' family and friends get the chance to find out when Cure Heart ends up revealing who she is.
  • Fakir becomes this for Ahiru in Princess Tutu when he discovers she's the titular Magical Girl. She later also tells him that she's really a duck that can transform into a girl.
  • In Private Actress, very few people know that Shiho Kobayakawa is the secret daughter of the famous actress Sayuri Nagasawa: her nanny Makiko Mouri, her boyfriend and fellow P.A. Tomoomi Hanamura, the Intrepid Reporter Hiroki Matsumae, fellow aspiring actress and illegitimate child Mariko Soriarno and her Evil Counterpart Kana Juumonji/Satoka Ryoudou.
  • The Tendo family, Ryoga, Shampoo and her grandmother, Mousse, Ukyo, Konatsu, and Nodoka in Ranma ½. This is only in the anime — in the manga, it's easier to list those who don't know Ranma's "secret".
  • A handful of one off characters in the Sailor Moon anime find out about one or more of the Sailor Senshi's identities, but they usually only show up in an episode each. The manga has a few more recurring characters learn of the masquerade (most notably Motoki). It is implied in both R/the Black Moon arcs that Naru does know Usagi is part of something unusual and important but is aware Usagi doesn't want her to ask about it, so Naru complies and doesn't pressure Usagi about it.
  • In Sakura Quest, Chitose Oribe is the only person Akiyama has told about a past incident in which Akiyama rented out his store to an outsider, and served as the guarantor on the loan, only for the outsider to skip town. Chitose remains quiet about this for years until several other local merchants try to pressure Akiyama into renting out his store to Belem, at which point she tells them about the secret, which explains why he'd be's reluctant to rent his store to anyone else.
  • In Sekirei, a majority of the Single Numbers (with the exceptions of Tsukiumi and Akitsu), as well as Uzume, Seo, and the twins Hikari and Hibiki, are sworn to secrecy about the identity of the mysterious #01. It is Harem Nanny Miya Asama. The secret is kept primarily because they are terrified of what she will do to them if they let it slip. Even the Big Bad honors the secret, and leaves her alone.
  • Sonic X has Chris Thorndyke, his grandfather, and his two servants — Mr. Tanaka and Ella — right before everyone knows about Sonic and his friends.
  • Melchisedec and Carmichael in Str.A.In.: Strategic Armored Infantry serve as Sara's Secret Keepers despite not knowing just what her secret is, only that she can synchronize with a discarded Mimic.
  • In Super Pig, Karin reveals herself as Buurin to her classmates, Kouichi, Masami, Kashiwagi, Kaoru, Jimmy, Kyoko, and Takuma in Episode 50.
  • In Tamagotchi, Mametchi already knows that Lovelitchi is keeping her identity as the Idol Singer Lovelin a secret, but doesn't make mention of it until Lovelitchi tells the Tama-Friends personally. The gang agree to keep the identity their secret, though Lovelitchi does reveal it to the public later on.
  • In Tomica Hyper Rescue Drive Head Kidou Kyuukyuu Keisatsu, Jin knows the true face of the masked idol, Sala Manda. Inversely it's hinted that she may have realized that he's the driver of White Crystal Hope, given that she thanks him by name.
    • Kumiko Kurumada, Gou's mother, is aware of the identities of the drivers. She seems to be the only person outside of the Mobile Rescue Police who definitely knows the truth. Until the movie, when Karigari and his subordinates discover that Gou is the driver of Cyclone Interceptor.
    • In the multi-month period between the end of the series and movie Sasagawa is the only one who knows that Karigari is still alive (aside from his subordinates, who were with him the whole time).
  • In Tonari no Kashiwagi-san Yuuto finds out about Kotone secretly being an otaku, which is what kicks off the plot. Sayaka, a Childhood Friend of Kotone, was already in the loop, and eventually more characters find out. Tina figures it out herself almost immediately when she notices the phone strap Kotone has, and Yuuto tells her to keep it a secret.
  • In the start of Wandering Son only Takatsuki and Nitori know each other are transgender. Over the span more of their friends begin learning and eventually both just out themselves in middle school when Takatsuki begins wearing the boy's uniform to school and Nitori tries (and fails) to wear a female uniform to school.
  • Ito and Akane in W Juliet guard the secret of Makoto's real gender though a few other people eventual figure it out and they have much more passive roles.
  • AKB49 – Renai Kinshi Jourei:
    • Minoru suspects that Maeda is aware of his true gender, but has never outright asked her to confirm his fear. Maeda confirms it herself when Minori collapses and later wakes up with Maeda by "her" side, taking care of "her".
    • Miss Aphrodite is also aware of Minori's true gender, and takes "her" under her wing prior to "her" graduation.
    • At the very end of the series, all 250 AKB fans who attended Minori's graduation concert become this for Minoru, having watched his farewell confessional and convinced to keep the memory and good will of Minori alive out of respect. Not a word gets out to tabloids (thanks to Miss Aphrodite and Raoul's help) or on the Internet, at least from what we see of the four months after Minori's graduation.

    Comic Books 
  • Superman:
    • In the Post-Crisis era, Lois Lane discovered Clark Kent's secret identity around the time they got engaged. Afterwards, Lois was a very able Secret Keeper. Early in the New 52 relaunch she did not know, but she eventually found out.
    • Bruce Wayne is also one of Clark's Secret Keepers (as is Clark for Bruce). This led to an amusing sequence when Bruce assumed Lois knew his secret, because he didn't expect Clark to keep secrets from his wife, whereas Clark felt it wasn't his secret to share. By the end of the story Lois has become another of Bruce's Secret Keepers.
    • Lana Lang, in Pre-Crisis continuity, sometimes knew Clark's secret and sometimes didn't. In some stories she knew it but was hypnotized to only remember it in certain circumstances (such as, for example, being in the 30th century as Insect Queen). One 1958 story even Deconstructed why Lana would make a poor secret keeper when she tried to cook up a new secret identity for an amnesiac Superboy as her 'cousin Andy'. Unfortunately her attempts to cover for 'Andy' backfired badly and she later ruefully concluded she just wasn't "smart enough" to hang onto the secret without blowing it. Post-Crisis onward, Lana definitely knows since Clark told her and has been a special confidant to him ever since.
    • Jonathan and Martha Kent started keeping Clark's secret long before he knew about it himself.
    • Supergirl knows her cousin's secret in all eras, and Superman also knows her Secret Identity. In the Pre-Crisis universe, Kara often helped him protect his Clark Kent persona.
    • Pete Ross discovered Superman's secret ID back when he was just Superboy during a camping trip. A convenient flash of lightning revealed Clark changing clothes, and Pete kept it secret, not even letting Superboy know that he knew. He once even used his knowledge to become an honorary member of the Legion of Super-Heroes by claiming he had telepathy and knew Superboy's secret ID. Writing the identity on a lead tablet so Superboy couldn't see. Superboy assumed Pete was bluffing and that everyone else was just going along with the joke.
    • In Superman (Volume 3) #38, Clark reveals his secret to Jimmy Olsen.
    • In Superman vs. the Amazing Spider-Man, it is implied — although not outright stated — Clark and Peter figured each other's Secret Identities:
      Clark: [shaking hands] It seems we covered the same event, Parker — though I don't recall seeing you there.
      Peter: I stick to the shadows, Kent... apparently just like you.
    • In Krypton No More, villains Protector and Radion kept each others' existence secret for years.
    • In the Pre-Crisis era, Supergirl's Secret Identity is Linda Lee Danvers. Her cousin Superman, her foster parents Fred and Edna Danvers -who were told in The Unknown Supergirl- and Barbara "Batgirl" Gordon know this. In 2004 story Young Love, it was revealed that her childhood crush Dick Malverne always knew, but he kept mum.
    • In the Post-Crisis era, Superman, Lois, Pa and Ma Kent and Lana know that Linda Lang is Supergirl. Lana actually helped Kara set it up, pretending that she is her niece. Stephanie Brown -the third Batgirl- knows Kara's secret identity and vice versa.
    • In Supergirl (Rebirth), only Supergirl's foster parents -Jeremiah and Eliza Danvers- and her boss -Director Cameron Chase- know who Kara Danvers is.
    • In Elseworld's Finest: Supergirl & Batgirl, Supergirl and Batgirl -Barbara Gordon- figured out each other's identities.
  • Batman:
    • More people are in on Bruce Wayne's secret than one might expect. Alfred Pennyworth is his primary Secret Keeper. He knows things about Bruce that even Dick Grayson doesn't know.
    • Lucius Fox is sometimes portrayed as most likely knowing that Batman and Bruce Wayne are one and the same, but not telling anyone, not even Bruce, this knowledge.
    • In "Hush," The Riddler reveals that he deduced Batman's Secret Identity while taking a dip in a Lazarus Pit. However, Batman convinces him to keep it secret for two reasons: first, having such a secret is no fun for an obsessive puzzler like him if every one knows it; second, it would give the owner of the Lazarus Pits, the Big Bad Ra's Al Ghul, a vital clue that the Riddler used a pit without permission, and he would have his League of Assassins kill the Riddler no matter where he is. More recently, the Riddler has developed a mental block preventing him from remembering this.
    • "Hush" actually showed a lot of Batman Secret Keepers: the Robins, Superman and Lois Lane, the Huntress, Leslie Thompkins, Zatanna, Batgirl, Catwoman, Ra's and Talia Al Ghul...
    • Jim Gordon is generally portrayed as being a good enough detective to have found Batman's secret, but reserved enough not to tell anyone, even Bruce, likely because it would put him in an uncomfortable legal position. In Superman/Batman, Batman, while noting the same thing about Superman's Perry White, reveals that he's aware that Gordon most likely knows. In Batman: Year One, after an unmasked Bruce saves his son's life, Gordon is clearly blatantly lying when he says his lack of glasses prevents him from recognizing the man, who he has met before, standing less than two feet away from him in broad daylight.
    • In the New 52, it's revealed that Harvey Dent has known that Bruce was Batman for a long time, but has to constantly fight himself in order to convince himself not to kill Bats or out him.
    • It's been shown (primarily by Amanda Waller) that at least some people in the government are aware of who Bruce really is, but allow him to carry on generally because they don't see Batman as a threat to them. Or possibly because multi-billionaire Bruce Wayne, with his power and connections, is, so it's better to let him spend his money on toys to fight crime and other threats than to turn it on them.
  • In one issue of Birds of Prey, Barbara Gordon revealed her operations as Oracle to her father, who was initially stunned but ultimately proud of his daughter. Barbara then pulled out her old Batgirl costume, saying, "I'm so glad that you're handling this so well, Dad, because there's more to it, I'm afraid." Jim Gordon's response: "Okay, this part I knew."
  • Batwoman has her dad, Colonel Kane, who is also her main source of logistical support. Also, Renee Montoya and Nightwing deduce her identity in 52 (the former knows her quite intimately, while the latter comments that she has been leaving him clues on purpose as a sign of trust).
  • Spider-Man:
    • Mary Jane Watson is the most well-known Peter's secret keeper. Her Ultimate Marvel counterpart was the first to be told (Peter told her soon after acquiring his powers).
    • Aunt May until that entire "One More Day" thing happened.
    • In Ultimate Spider-Man, former bully Kenny McFarlane. Kenny actually figures it out on his own, staying up late at night, thinking about Peter's new awesomeness (ie: he flipped Kenny once, broke Flash's hand, replaced Flash on the basketball team, etc.) and Spidey's apparent availability at Midtown High School. Then he tests it.
      Peter Parker: (to himself, while he's loading books in his locker) What the-? Oh, come on... My Spider-Sense is going off at school. That can only mean one thing. And the Academy Award for best performance by an amateur super hero trying desperately to hold onto his secret identity goes to...
      Kenny: [kicks him into the locker]
      Peter Parker: Ow! Owy ow! Why did you- ow! What is wrong with you!!?? Ow- Owww!!
    • Miles Morales, the new Ultimate Spider-Man, shared the secret of his powers with his friend Ganke.
    • Aunt May seems to play this role in the Spider-Man Trilogy movies, particularly the second movie, where she gives Peter a speech seemingly directed at Spider-Man, which helps him decide to become Spider-Man again.
    • Aunt May definitely plays this role later in Ultimate Spider-Man. With that awesome matriarchy, Aunt May subverts There Are No Therapists. At one point, she pulls a gun on a recognized supervillain.
    • Daredevil and Spider-Man knew each other's identities for a long time. Currently, neither remembers the other's identity due to some shenanigans both pulled on separate occasions; Spidey made a Deal with the Devil and Matt did some unexplained trick.
  • Over in the Spider-Gwen universe, Gwen Stacy revealed her identity as Spider-Woman to her father.
  • Jaime Reyes, the current Blue Beetle, was thrown a year into the future after Infinite Crisis. His family, naturally enough, freaked out on his return, so Jaime decided to prove his story about what had happened to him by revealing his secret identity. His family and friends know, but keep it a secret outside of that.
    • The second Blue Beetle, Ted Kord, had his girlfriend Tracy as a Secret Keeper during his Charlton incarnation.
  • It's revealed in DC Comics' Identity Crisis, that all the superheroes (the ones whose identities remain a secret) know each other's identities.
    • Whether or not the superheroes' secret keepers are aware of the others are open to debate. Especially considering that Jean Loring knows Tim Drake is Robin, despite Tim having his identity a deep secret even from Bruce's allies.
  • Wesley Dodds' girlfriend Dian Belmont knows he is the Sandman, and occasionally helps him in his cases.
  • Green Lantern Hal Jordan's first Secret Keeper was his airplane mechanic, Tom Kalmaku. When Tom accidentally learned Hal's identity, he respected GL enough to offer to let him erase the memory from his mind—but the offer convinced Hal that Tom was trustworthy, so he let him keep the knowledge and they became close friends.
  • Daredevil:
    • In a villainous example, from Born Again onwards, Wilson Fisk learns Daredevil's real identity. But he keeps it a complete secret for years, to the point that among his goons, it's well known that he knew exactly who DD was. However, a no-name criminal decides that this is unacceptable, since Daredevil still ruins criminal operations, and thus, Fisk is indirectly responsible for the losses other gangs have suffered. Thus, the upstart turns all of Fisk's goons against him.
    • Foggy Nelson is a longtime secret keeper. In the All-New, All-Different Marvel run, after Matt somehow forces the world to forget that he's Daredevil, he allowed Foggy to remember, thus making Foggy Matt's only secret keeper.
  • In Astro City story "Pastoral", all of the Close-Knit Community in which he works knows Roustabout's Secret Identity but hide it. Indeed, they feign Obfuscating Stupidity to the point where it looks like an Extra-Strength Masquerade.
  • In the Domino Lady comics, Ellen's friend Lulu Chambers serves this role for Ellen.
  • Wonder Woman (1987): When Cassie started out as Wonder Girl she wore goggles and a wig to hide her identity to protect her mother, but kept her best friend George in the loop even while trying (and failing) to hide her activities from her mother.

    Fan Works 
  • In All This Sh*t is Twice as Weird, Victoria becomes this with regard to Cullen's Dark and Troubled Past as a young Templar. The other Inquisition leaders know that he's deeply troubled by the way the Orlesians treated him at the Halamshiral ball, but she's the only one who knows why. (It's implied that Cole also knows, but he won't speak of it to anyone but her.)
  • Back To Us: In Chapter 24, Alya becomes one to Adrien after she runs into him when he's about to transform into Chat Noir.
  • Becoming Lífþrasir: During his time as "Cattongue", only a few people knew who he really was, including Thuggory, Heather and Camicazi. Eventually Gobber catches him without his mask on in his old study at the forge and agrees to keep his secret.
  • A Brief History of Equestria: Prior to the birth of Pansy's son Plow Blade, the only pony who knew about her relationship with the Earth Pony Trencher was her friend Shield Skin, who they even used as a secret messenger. This lasted for years, until Plow Blade's birth — since he was an Earth Pony like his father, Pansy was forced to admit the truth, leading to Hurricane trying to arrest and kill Trencher, which kicked off the Winter War.
  • The Child of Love: At the beginning, very few people know Asuka is pregnant (Shinji, Misato, Rei, Ritsuko, Gendo, Fuyutsuki, Hikari) and they keep it secret.
  • Child of the Storm has Harry increasingly become this, partly because he's widely considered trustworthy, partly because he's thoroughly curious, and partly because he's pretty shrewd and good at deductive reasoning. By chapter 45 of the sequel, he knows that Bucky used to be the Winter Soldier, Carol is descended from Steve Rogers and Peggy Carter, Maddie is Jean's stolen at birth twin sister, Doctor Strange was originally known as Taliesin, Court Bard and Physician to King Arthur, and student of Merlin, that Hermione is actually the daughter of Wanda Maximoff and John Constantine, something that even Hermione herself doesn't know, the existence, name, and broad background of Clark Kent (particularly impressive, since his sole starting point was that Jean-Paul, a friend of his, had been in Kansas and being vague as to why, and that strange stuff happened in Smallville), and by implication, the identity of Draco Malfoy's mental hitch-hiker. And that's just the start.
    • It becomes something of a plot point in the sequel, what with the nature of some of the secrets meaning that he really doesn't like having lie - directly or by Exact Words - to some of his friends.
  • Children of Remnant: Qrow and Clover clearly recognize Neopolitan on her date with Emerald but decide to let them be for the sake of not causing a scene.
  • In Code Geass: The Prepared Rebellion, Milly and her grandfather are two of the very few people who know Lelouch is Zero.
  • Dance with the Demons:
    • Dr. Douglas Dundee, the physician who delivered Bruce Wayne, knows Bruce's Batman "because he had to patch him up so often".
    • James Gordon knows his daughter is Batgirl, but he's unaware of Batman's true identity (which Barbara knows, of course).
      "I'm going to try to hook up with some of the others," she said. Gordon had learned years ago that his daughter was Batgirl, but the Batman's true identity was a mystery to him.
  • In Danganronpa: A New Horizon of Despair, Tarou promises to be this for Shin, who doesn't want anyone else to know his Ultimate talent.
  • Dark Valkyrie: The few people who see the slave brand on Hiccup are determined that no else finds out, since Hiccup could lose his status as heir if he did. His friends end up finding out anyway, and are determined to help him through it. They even come up with a plan to give him and themselves a tattoo to cover it up and make it less likely that anyone will figure it out.
  • Doing It Right This Time: Sakura and Nozomi know about her brother and her middle sister (respectively) and other people being time-travelers and are keeping it secret... despite Sakura being very loud and indiscreet.
  • Elemental Chess Trilogy: It is revealed that Maes Hughes was this for Roy Mustang and Riza Hawkeye, before and during the early part of the Fullmetal Alchemist canon. Hughes, who was Mustang's best friend, was the only one who had absolute confirmation of the actual Secret Relationship between the two (though plenty of other people guessed).
  • The Elements of Harmony and the Savior of Worlds: Celestia and King Spykoran are the only ones aware that Spike is Spykoran's long-lost grandson. They agree to keep the secret for the time being, because they can tell he's quite happy with Twilight.
  • A Force of Four: Andrew Vinson knows his lover Karen Starr is Power Girl's secret identity.
  • In the Freedom Planet fanfic Little Miss Heropants, Lilac has PTSD from Lord Brevon torturing her and Carol has to keep this a secret, especially from Milla.
  • Girlfrenemies: Raven accidentally blabs to Maddie and Dexter that her relationship with Apple is a lie to make royals and rebels get along. They agree not to tell anyone.
  • A Growing Affection:
    • The five Kages and the leaders of three Kekkei Genkai clans (one of which is Hiashi, the other two are unrevealed) hold the secret origins of bloodline traits.
    • Tsunade and Jiraiya, with Kakashi and Shizune as backup, keep the secret of Naruto's father's identity.
  • A Hairier Problem: Rise of the Furball: The Cutie Mark Crusaders initially become this for Apple Bloom when they witness her first transformation into a werewolf. Babs Seed later is introduced to the secret after accidentally witnessing it herself, and Silver Spoon has to keep it as well following her Heel–Face Turn. The other new lycanthrope, Lightning Dust, has keepers in Rainbow Dash, Applejack, Fluttershy, and Twilight, but thanks to a slip-up by Rainbow on Nightmare Night Rarity, Pinkie Pie, and Spike learn her secret as well.
  • Harry Potter and the Mystic Force:
    • Snape, Sirius, and Tonks are the only ones to know where Harry escaped to.
    • Later, when Harry returns to Hogwarts in disguise, Luna recognizes him at once (somehow). Neville, Ginny, Fred, and George find out later when his disguise fails after he's exposed to a blast of raw magic during a fight. Later still, Draco Malfoy identifies him by his flying skills, playing Secret Secret-Keeper until he's finally pushed to confront Harry.
  • Hellsister Trilogy: Fred and Edna Danvers know their daughter Linda is Supergirl , and they also know Clark Kent's real identity. Fred thinks he is able to guess Batman's identity, since he met him once, but Linda warns her father against getting too nosy.
    Fred Danvers: "I never thought he'd finally do it, Linda. But tell me something, will you?"
    Linda Danvers: "What's that, Dad?"
    Fred Danvers: "I know who he is. And I know who you are. But are some of these guys and ladies around here, maybe, well—part of the team?"
    Linda Danvers: (innocently) "What team is that, Dad?"
    Fred Danvers: "You know what team," said Fred, in mock exasperation. It'd be really fun if you took me up to shake hands with some of them. Now, it's not like I want to know which ones they are. But you know, I have met the Gotham guy. And I'll bet I could guess which one he is, if I tried. Is it kind of like the Mafia? Do you say, 'This is a friend of mine'?"
    Linda Danvers: "Dad, I've gotta tell you. Whenever we think somebody's getting too curious, we have to take him to the guy from Coast City. And the Coast City guy has to use that thing on his finger to go over your mind like a Disk Doctor over a hard drive, and purge out those curiosity bumps. After it was done, you wouldn't even remember everyone that was here."
    Fred Danvers: "Hmph. You guys used to have to go through such stupid stunts to keep your secrets secret."
    Linda Danvers: "That was before we met the guy from Coast City."
  • In Hope for the Heartless (which takes place shortly after the events of The Black Cauldron), the resurrected Horned King imprisons a peasant girl named Avalina — who stumbles upon his castle during one stormy night — to keep his return a secret from Prydain. He threatens to kill her and her loved ones should she try to escape, but grants her request to say the proper farewells to her family. During her short stay with her mother and brother, she asks them to keep everything a secret to prevent mass panic from erupting due to the Horned King's resurrection. They eventually agree reluctantly, realizing that they can't possibly do anything without potentially endangering Avalina's life.
    • Months later (with the Horned King and Avalina having grown closer during that time), the lich and the girl stumble by chance upon Taran the pig-keeper and Princess Eilonwy (who are Avalina's friends) while being outdoors. The vengeful lich almost kills them, but Avalina manages to change his mind and they depart. Taran and Eilonwy tell of this encounter to Dallben. After gaining a confirmation from Hen Wen about Avalina's account of the events leading there, the trio decides to remain silent for the same reasons as Avalina's family.
  • Infinity Train: Blossoming Trail: In Chapter 9, Parker Cerise reveals that he was the only person who knew about his sister being a Nightmare Fetishist and how she was talented in writing horror.
  • Justice League of Equestria:
    • Mare of Steel: The rest of the Mane Six, Princess Celestia, and Rainbow Dash's mother Firefly become this for Dash when she becomes Supermare. Thunderlane joins the list when he figures out her identity during her final fight with Brainiac.
      • In one of the side stories, she and Batpony become this for each other when he deduces her identity, and she uses her X-Ray Vision to see that he's the real Prince Blueblood (who was kidnapped and replaced by Zod.
  • In Kara of Rokyn, Lois becomes Superman's secret keeper before their wedding.
  • In Kyon: Big Damn Hero, Rika and Kyon are this to each other, Miyoko/Miyokichi inadvertently became one, and Kyon's sister wants to become one.
    • So far, quite a few members of the extended SOS Brigade trust Kyon's sister, but Kyon himself doesn't trust her.
  • Last Child of Krypton: In the original story Shinji reveals his identity to Asuka. In the rewrite Fuyutsuki knows since the beginning. Asuka, Misato and Ritsuko find out later and keep it a secret.
  • Heroes in "The Legend of Royal Blue and La Sylphide" aren't as adept at hiding their identities as in Miraculous Ladybug. Emilie's Old Retainer Simone recognizes La Sylphide after hearing her voice, and Gabriel detransforms in his room before seeing his classmate Julien Bonheur had let himself in. The two of them are glad to provide alibis and moral support when needed, and sharing the secret helps Gabriel and Julien develop a real friendship.
  • The Many Dates of Danny Fenton: Occasionally Danny has discovered the double lives of his dates and promises to keep their secret safe.
  • In the Mass Effect Self-Insert Mass Vexations, Tali eventually becomes Art's secret keeper.
    • He gets a lot more secret keepers in the sequel: as of the moment, Garrus, Madison, Thane, Kasumi, and Shala'Raan have all found out.
  • In Mega Man: Defender of the Human Race, ProtoMan is this for the fact that Nomad's alive.
    • Cut Man, Guts Man, and Magnet Man are this for ProtoMan meeting with Nomad.
  • One of the biggest changes in Miraculous! Rewrite is that the heroes are permitted to select somebody to serve as their official confidant, allowing them to reveal their Secret Identity to them. Marinette chooses Alya as hers; Adrien picks Nino.
  • The MLP Loops: Changelings (usually) have a Hive Mind, so in loops where their Hive Queen Chrysalis is Awake, the entire hive is aware of the looping nature of reality. They keep quiet about it, and are notably very respectful to the loopers, who they know are infinitely older and more powerful than any of them.
  • MLP Next Generation: Know Fear!: Sunny Skies is the first pony to find out Starburst's Secret Identity as the Fear Lantern, and agrees to stay quiet on it both out of respect to their friendship, and because she feels she owes Star for saving her life in Stalliongrad. This ends up becoming a moot point when Starburst ends up outing herself as the Lantern while in her rush to save her mother.
  • Supergirl (2015) fanfic my youth is yours: In college before they started dating, Lena was the first person Kara ever told about her alien nature. When Lena heard a new Kryptonian had saved a plane, she put two and two together before she even saw the pictures of Supergirl.
  • After the protagonist of Never Been Bothered learns that Elsa and Anna are secretly sisters, they promise not to tell anyone. It helps that they suspected they were siblings as they look too similar to be unrelated somehow.
  • In A New Order, Naru and Rei's Grandfather know Usagi and Rei are Sailor Moon and Mars, respectively.
  • In Once More with Feeling, Kaji is the only major character who knows that Shinji's a time traveller.
  • Peta Parker: For a while, Deadpool and Vanessa where the only ones who knew the truth behind "Spider-Man".
  • In Pokémon Reset Bloodlines, outside of his Pokémon, Ash has only shared his secret about the collapse in reality and the creation of the new timeline with Mewtwo and Casey Snagem. Sabrina also knows it, having figured it out herself by reading his mind without his knowledge, but doesn't seem interested in using it against him.
  • Predator and Prey: Geoff, Noah, Leshawna, Gwen, Trent, Justin, and Heather are the only people who know that Bridgette was sexually abused and raped by Alejandro during Total Drama World Tour, and they have all agreed with her to not reveal this to anyone to protect Bridgette. As a result, Alejandro is still merely seen as a Faux Affably Evil Manipulative Bastard by the show and everyone else rather than the incredibly depraved sexual predator he is off-camera and in reality.
  • By the time Hiccup returns to Berk in Prodigal Son, Astrid and Fishlegs already knew who he was.
  • Origin Story: Many people think they know Superwoman's Secret Identity. She gets called "Karen Starr" all the time by various people. Thing is, Superwoman's real name isn't Karen Starr... its Alexandra Harris. Alex's domestic partner Louise and the members of Runaways function as Alex's Secret Keepers.
  • Naru from Sailor Moon becomes this in any fanfic where she finds out Usagi is Sailor Moon. Examples include Sailor Moon Z and Beautiful Destroyer Sailor Moon.
  • SAPR: Celestia has a conversation with Ozpin using Sunset's magic journal, and she quickly pegs him as an immortal due to him being so Wise Beyond His Years. She promises not to tell Sunset or anyone else.
  • Second Wind: The only ones who know that Luffy and Zoro are time-travelers are people that they consider family.
    • In Chapter 24, they tell Ace, who may later have informed Sabo offscreen.
    • In Chapter 26, Luffy and Zoro agree to let Ace inform Whitebeard of it.
    • In Chapter 54, Luffy tells Garp, who privately swears to take the knowledge to his grave. Immediately afterward comes The Reveal to the rest of the Straw Hats.
      • Brook, the only one not present for The Reveal, finds out at the end of Chapter 60.
    • In Chapter 62, Luffy informs Rayleigh and co., who then reveals the true history of the Roger Pirates to the crew in turn.
  • In the first installment of Skyhold Academy Yearbook, Varric is this for Hawke regarding the real reason she's taken sabbatical from the eponymous school. Later, Cassandra takes on the role for Varric, after she accidentally stumbles across both the secret he's keeping for Hawke and the one he's keeping for himself.
  • In Spotless, Kagami finds out that Marinette is Ladybug when she detransforms in-front of her, not noticing Kagami in her room when she returned from a battle. Naturally, Kagami is quick to fret and worry over Marinette being in danger.
    • When Peta sensed the bomb about to go off, she was forced to reveal herself to be Morgan's favorite superhero when she saved her.
  • Super Therapy!: Dr. Lynn Matthew knows most secret identities of her patients (not hard with Spider-Man considering he signs his checks with "Peter Parker"). Of course, she's tied up by doctor-patient confidentiality.
  • Superwomen of Eva 2: Lone Heir of Krypton: Emil Hamilton to Asuka. Later, Kaji and Shinji learn she is Supergirl. Asuka also reveals her identity to Hikari.
  • This Bites!:
    • Prior to The Reveal in Chapter 14, Soundbite was the only one who knew that Cross knew a lot more than he was letting on, but even he didn't know everything; it seems that somehow his knowledge from the Internet doesn't extend to One Piece itself.
    • Post-Reveal, the crew keeps his secret; the outsiders that have learned the truth about Cross thus far are Ace, Vivi's family, Iceburg, Paulie, Zambai, Dragon, Koala, and the New World Masons.
    • Zoro and Nami also serve as this; whenever there's sensitive information that needs to be handled properly, Cross shares it only with the first and second mate… and Soundbite, of course. Though in Chapter 24, as part of penance towards Vivi, Cross agrees to let her in on it as well, and in Chapter 43, Merry comes in as well, having technically been a part of it all along. He formally adds Robin (who had been not-so-subtly eavesdropping the whole time) in Chapter 59.
    • In Chapter 28, Cross writes down all of his relevant knowledge for the Skypiea arc, knowing that he won't be able to speak freely while Enel is around. He asks Robin to help him out because she's the one with experience in being discreet when one slip-up could mean death, because her powers will help him write faster...and because she'd just use said powers to peek at his notes anyway.
    • When the Marine training grounds were moved to Navarone, Jonathan ended up telling Instructor Zephyr about their endeavors to bring down the Government, asking him to be a member. Though Zephyr closes off when he hears they're getting intel from pirates, he is sympathetic enough to their cause to keep their secret.
    • Lassoo and Funkfreed become this to Soundbite after the snail tells him what he witnessed: that both Zoro and Nami find their dreams less worthy than Luffy's and Cross's, and that if they knew, the conflict would tear the crew apart.
    • Garp promises to keep the secret that Perona, the newest Warlord of the Sea, is actually a close ally of the Straw Hat Pirates.
  • In Time Fixers: Nicktoons of the Future when Max reveals that he is a genius like his parents, SpongeTron promises him that he will keep it a secret from everyone else.
  • Yoriko from Tokyo Ghoul becomes this in any fanfic where she finds out Touka is a ghoul Pick any fanfic.
  • Travels of the Trifecta: There are two secrets being kept by both Paul and Conway after the two of them part ways in Chapter 10, and each of them has at least one Secret Keeper. Candice and the Nurse Joy from Snowpoint City are the two people who know that Paul is terminally ill, and Maylene is the only person who knows that Conway is still alive and didn't die when he fell out of the helicopter.
  • Wonderful!: Before Wonder Red revealed her existence to the world and her Secret Identity to the PRT, Emma and Sophia knew that she was Taylor Hebert.
  • When he manages to guess the identity of Harry's father in Prince of Death, Chiron decides to keep it secret and recommends that Harry to do the same, fearing that the kid would be ostracized and subjected to murder attempts if it were known he's a son of Hades.
  • Nino in Won't Tell a Soul serves this to Marinette/Ladybug and later to Adrien/Cat Noir.

    Film — Animated 
  • In How to Train Your Dragon, Astrid briefly takes on this role after she discovers Toothless and she and Hiccup discover that the Green Death is forcing the dragons to attack Berk.

    Film — Live-Action 
  • In About Time Tim reveals his secret to his sister and actually takes her back time traveling with him. She only knows briefly however; due to other circumstances Tim ends up eradicating this moment from the timeline.
  • In Batman v Superman: Dawn of Justice, Clark and Bruce quickly figure each other's Secret Identity out and become mutual Secret Keepers. Lex Luthor is revealed to have been a Secret Secret-Keeper all along (along with knowing the identities of Barry Allen, Diana Prince and Arthur Curry) and has been using his knowledge of their real identities to manipulate them.
  • In Hangmen Also Die!, Mascha figures out that the man she saw running from the Nazis after the assassination of Reinhard Heydrich (Dr. Svoboda), and whom she could identify if she saw him again, must have been the killer. Her father, Professor Novotny, insists that she keep the secret all to herself, warning against Loose Lips.
  • Parodied in Johnny Dangerously, when Johnny Kelly's mother and brother are the only people who don't know he's the notorious gangster Johnny Dangerously!
  • In Kick-Ass Katie knows Dave is Kick Ass for most of the movie.
  • In The Last Witch Hunter, this is made "official" with the position of Dolans, who are a series of Legacy Character Secret Keepers, helping Kaulder fit into advancing society, recording his history and keeping him human.
  • Man of Steel: The Kents, obviously. Lois becomes one, being the only person at the Daily Planet to see Superman up close. She even jokingly welcomes him to the "Planet" when she sees him at the end.
  • Miss Meadows: The first person to deduce Miss M's double life is Heather, one of her elementary school pupils. Said person is totally okay with it, and never does divulge the secret.
  • In Now You See Me, at the end, after finding out Dylan was the fifth Horseman, Alma locks the secret up and throws away the key.
  • A Shock to the System: Stella realizes that Graham was involved with his boss's death after finding the incriminating lighter he left behind, but is intimidated into keeping silent when he makes clear killing her is something easy for him. Graham is satisfied on seeing she's realized this and lets her go.
  • Patrick and Grace Winslow play this role in The Smurfs regarding their little blue visitors from another time and place, because, hey... who would believe them in a world that seems to regard the Smurfs as a mere legend documented by a Belgian cartoonist?
  • In Suicide Squad (2016), Bruce and Amanda Waller become mutual Secret Keepers, Bruce knowing about Task Force X and Amanda's involvement in the destruction of Midway City and Amanda knowing Bruce is Batman.
  • In The Unknown, Cojo the midget knows Alonzo's secrets (that he is a murderer and that he is not really armless) and helps him maintain his cover in the circus.
  • In Without a Clue, Mrs. Hudson and the Baker Street Irregulars know that Sherlock Holmes is just an actor and Dr. Watson is the real detective. Watson also tells his editor eventually, letting the audience hear the background. The only person who's figured it out on their own seems to be Professor Moriarty.
  • In The Wolfman (2010), Singh knows Sir John is the Wolfman and kept him restrained during nights.

  • In the Action Figures series of teen superhero novels, Lightstorm's teammates eventually have to reveal her identity to her mom since the young heroine has left for another planet with space aliens, and there's no other way to explain her long-term absence. The mom in turn enlists another secret keeper, her current boyfriend, who gets drunk two days later and spills the information to everyone nearby.
  • In All Men of Genius, a number of people know or learn that "Ashton" is actually Violet, but the only one permanently at the Academy with her is her friend Jack, who keeps the secret throughout (even when it would be advantageous for him to tell, such as to divert Cecily's attention away from the not-really-male "Ashton" and towards himself).
  • In the final books of Animorphs, the Animorphs end up revealing their powers and ongoing battle to their families as part of hiding them away from the Yeerks. Before that they couldn't, since for all they knew anyone in their families might have been a Controller.
    • The Animorphs are also mutual Secret Keepers: their allies include the Chee, a race of Technical Pacifist ancient alien androids, who provide information and occasionally use their holograms to pose as the Animorphs; the free Hork-Bajir colony in a nearby valley; and a few members of the Yeerk Peace Movement.
    • Visser One is a villainous example, eventually figuring out that they're humans and then the identities of at least Marco and Jake. However, since they mostly annoy her rival Visser Three, she decides to keep mum.
  • In Ascendance of a Bookworm, Myne acquires a bunch of these, thanks to accumulating secrets that only a select number of people know about:
    • When it comes to her Past-Life Memories, which have effectively overwritten the personality of her body's original owner, Lutz is the first to figure out that Myne cannot possibly be said original owner. He however considers that who else gets to know that information is Myne's own business, and keeps it to himself. A later Mistaken for Spies situation results in Ferdinand, Karstedt and the region's Archduke being aware of the situation, as well. Benno is aware something is up, but doesn't really care what it is as long as Myne's Giving Radio to the Romans continues making him money.
    • When Myne is made a blue shrine maiden, which is a job usually given to daughters from noble families who have been taken out of their family's line of succession or Sent Into Hiding, the temple doesn't want too many people among commoners to know. However, between Myne's family, Lutz and the fact that Myne is still doing business with Benno's store all while knowing a couple members of his family, the number of people who are aware of her new job reaches double digits without much effort. Thanks to Myne involving High Priest Ferdinand in a conflict between Lutz and his parents, Lutz's parents end up being aware she's spending time in the temple and are told to pretend they didn't see her there.
    • When Myne acquires her noble identity Rozemyne, absolutely nobody is supposed to know she and Myne the commoner are the same person. Many temple residents and nobles are told that Rozemyne was one of the Sent Into Hiding children all along. The people who not only know both Myne and Rozemyne, but have also met Myne's family, have to keep their mouths shut about it around anyone who doesn't already know.
  • One ongoing example and two plot-specific ones in the Aunt Dimity series:
    • Bill, Emma and Derek know about Dimity's ongoing contact with Lori via the journal (Bill and Emma have actually experienced it for themselves). To date, they have not shared this info with anyone else, not even Dimity's former attorney Willis Sr.
    • Gerald Willis in Aunt Dimity's Good Deed guards the remains of Sybilla Markham Willis and the journal of her brother-in-law's conversations with the dead Sybilla (after he killed her for marrying his younger brother). They were passed from father to eldest son for some three hundred years.
    • A major plot resolution in Aunt Dimity Digs In. Many years earlier, Italian POW Piero Sciaparelli worked for old Mr. Hodge on his farm and found an ancient Roman grave in the floor of the stables. When his daughter Francesca became engaged to young Burt Hodge, her father entrusted her with the location of it so she could protect it from vandals and archaeologists, and he gave her a replica of the bronze phalera to wear as a pendant. Later on, her younger sister Annunzia or "Annie" married Burt and took over the primary role of protector even getting her own phalera. Anxieties over which of the two might reveal the secret (the elder sister dating the archaeologist or the younger trying to save a drought-stricken farm from total ruin) drive the family animosity.
  • In the Marvel Cinematic Universe Tie-In Black Widow, Natasha Romanov is the only Avenger who knows that Agent Coulson is Back from the Dead.
  • Deryni: Stivana deCorwyn and her husband Keryell, Earl of Lendour had twins Alyce and Vera. As a hedge against persecution, they passed Vera off as the daughter of the human Howards. Alyce and Vera only learned of this after their parents were dead. They kept the secret between themselves and their tutor of ars magica Father Pascal until they Named their sons, when Alyce told her husband so he could assist in the ritual, and when King Donal paid a surpise visit to participate in Alaric Morgan's Naming. Alyce blocked Kenneth Morgan's memory at his request, Donal promised Vera that the secret was safe with him, and both Donal and Alyce died in a few months' time. Morgan and Duncan kept the secret between them for many years.
  • Doctor Syn ("The Scarecrow"): Various characters learn of Syn's Secret Identity. Some fortuitously die soon afterwards, but others act as secret keepers. In particular, Mr. Mipps is Syn's devoted sidekick throughout the series.
  • In the Dora Wilk Series, it's actually an official thing — the magicals of Thorn are instructed to contact Dora if any of them gets in potentially-masquerade-breaking trouble with the law.
  • The Dresden Files: In Death Masks Harry learns a secret of antagonist mob boss John Marcone. He knows Marcone from years ago when they met eyes and gazed into the soul of each other. He knew from that moment there was some dark tragic moment that has driven Marcone for years to become the leader of crime in Chicago, keeping things running smoothly and limiting civilian casualties. Harry first learns this is because of a mob hit against Marcone years ago that went south. A young girl named Amanda was killed. It is later revealed Amanda isn't dead. The father of the mobster shooter paid off the coroner to sign the death certificate and placed her in a hospital out of state as a security precaution if his son is ever indited on the original shooting. Marcone eventually accquired their business, disposed of them, and learned of the girl. He has kept her safe and secure, and even has the Shroud of Turin stolen in hopes of it healing her. When Marcone finds Harry standing out in front of this location, he quietly informs Harry if ever becomes a minor threat to this secret, Marcone would kill him personally. Harry later learns Marcone is keeping this secret from Amanda's mother, who was broken already by her daughter's "death" so much it lead her to try and kill Marcone with magic. Now they are lovers. Still, Marcone feels if the mother learns of her daughter being alive but trapped in a coma, it would destroy her even more.
  • Family Skeleton Mysteries:
    • The entire Thackery family is one regarding Sid's existence, though Madison doesn't find out until the end of the first book.
    • Georgia, and later Fletcher Wildman, are ones for Charles Peyton's lifestyle (rather than maintain a permanent home, he lives in various offices on whatever campus he works at). Book 3 reveals that a few others also know, including Dr. Brownlow "Brownie" Mannix (also known as College Boy), whose family owns the carnival where Sid and Georgia first met.
  • In Amy Stewart's Girl Waits With Gun crime novels, only two living people know that narrator Constance Kopp's sister Fleurette is actually her daughter. Those people are her actual sister, Norma, and brother Francis. Since the series is set in the 1910s, it's definitely justified, but that information puts some of her views and choices in a different light.
  • Harry Potter:
    • As stated above, the trope namer is the Fidelius Charm, a spell that makes one individual a literal Secret Keeper; as long as they keep the secret, it cannot be found out by anybody else. In addition, even if the Secret Keeper does tell someone the secret, that someone is unable to pass on the knowledge unless the original Secret Keeper dies, in which case they become the new Secret Keeper. This is most often used to conceal locations. The house where Harry and his parents lived was guarded under the Secret Keeper charm so that Voldemort couldn't ever find them. They specifically chose Peter Pettigrew because everyone would naturally assume James Potter would select his brother-from-another-mother best friend, Sirius Black. Knowing that, the Potters decided, at Sirius's suggestion, to choose a less obvious Secret Keeper and Pettigrew became it. They just didn't know that Pettigrew was a Death Eater and loyal to Voldemort.
    • Later, Dumbledore is the Secret Keeper for the headquarters of the revived Order of the Phoenix.
    • Harry, himself, doesn't have a Secret Keeper in this trope's sense, which is a key reason why he's so miserable every summer with the Dursleys (who know what he is, but won't let him speak of it). Hermione's parents, being supportive of her gifts and hence exceptions to the "no parents" rule, are her summertime Secret Keepers, which spares her from feeling as isolated while she's away from school.
    • Alan Rickman became a Real Life Secret Keeper about Severus Snape's motives, when J. K. Rowling told him that Snape loved Lily Potter years before this information was revealed in the books.
  • Discussed in How to Be a Superhero as an inevitable effect of super-heroics, due to the hero's slip-ups:
    1. You park your Crimemobile in the garage.
    2. You put your dirty costume in the laundry basket.
    3. You keep shouting, "Eat disintegrator blast, Crimemaster!" in your sleep.
  • In The Last American Vampire, the sequel to Abraham Lincoln: Vampire Hunter, the narrator spends a few paragraphs talking about "Renfields", humans who are employed by vampires as assistants to help them deal with the time and place they're currently in. He uses the phrase "professional secret keepers" in this description. Turns out Bram Stoker was a Renfield, and made use of that experience when writing Dracula.
  • In The Licanius Trilogy, as The Reliable One, Asha is entrusted with Davian and Erran's most dangerous secrets, as well as the crushing responsibility of powering the Tributary. She never betrays anyone's trust or shirks her responsibility.
  • Monster of the Month Club: Rilla herself for the fact that the monsters are alive. Rilla's friend Josh also finds out in book 2 when he comes into her room and meets Burly.
  • In The Mug And Spoon, Count Leedway becomes this after his wife Marie reveals that she is not a princess he woke from an enchanted sleep, but a lowborn girl who only pretended to be bewitched, and that this con has been run in her hometown for years, with many other girls picking eligible husbands this way. He is amazed she chose to marry him, despite knowing he was an Impoverished Patrician twice her age, so he ultimately decides to keep quiet and not to expose the con.
  • Nina Tanleven: In The Ghost in the Big Brass Bed, Jimmy Potter is one for the location of Cornelius Fletcher’s Lost Masterpiece. While his sister and Nine both figure it out, Jimmy still keeps his mouth shut until the ghost of Cornelius himself unveils the painting.
  • In Please Don't Tell My Parents I'm a Supervillain, Claire's mom, a former villain herself, keeps the kids' identities safe.
  • In the Rainbow Magic series, Rachel and Kirsty are this for the fairies, as is oneshot character Rebecca.
  • In the Ravenor trilogy, Kara Swole learns that Carl Thonius is the host of the daemon Slyte. She reluctantly agrees to keep this a secret after he cures her cancer with his daemonic powers. When she later starts having second thoughts, he inflicts Laser-Guided Amnesia on her to keep her quiet. The fact that she kept this secret lands her in hot water with the Inquisition after the truth comes out.
  • In Renegades, Ruby and Oscar find out Adrian's secret identity at the end of the second book, but agree to keep it from his dads.
  • Safe-Keepers of Sharon Shinn's Safe-Keepers Series can be told any secret, no matter how terrible, no matter how much damage may be caused, and will never reveal it until the secret is found out by someone else, Or they get permission. Yes, they really will not tell. Never. Ever.
    • This doesn't mean that they won't do anything about it, though. Fiona in The Safe-Keeper's Secret goes out of her way to help this one girl who confides in her. However, considering that she doesn't actually have the Safe-Keeping gift, since she's Obliviously Adopted and is in fact a Heroic Bastard this may or may not count.
    • A straighter example is Ayler in The Dream-Maker's Magic. He doesn't let slip that Phillip was switched at birth with Leona's sister Kellen, but he does orchestrate things so that Kellen comes into contact with Leona, rather than allow the switch to be totally unknown for the rest of their lives. He only confirms the secret once they have deduced it for themselves.
  • In A Song of Ice and Fire, only two people survived the battle at the Tower of Joy before the start of the book: Ned Stark and Howland Reed. There are many clues for the reader as to what Ned's big secret is, but it's clear that Howland Reed is one of the only people in-universe who knows. Knowing the author's Anyone Can Die Shoot the Shaggy Dog tendencies, Howland Reed will probably still wind up dying before anybody else finds out.
  • In The Southern Reach Trilogy, the psychologist has been the director for most of the Southern Reach's existence and she also hung around Saul, the lighthouse keeper, when she was a kid. She only escaped the formation of Area X by coincidence.
  • Star Wars Legends: The novelization of Revenge of the Sith makes it clear that Palpatine has been acting as Anakin's mentor and confidant for far longer than just the events of the film, slowly turning him into the sort of person susceptible to The Dark Side.
    The Supreme Chancellor has been family to Anakin: always there, always caring, always free with advice and unstinting aid. A sympathetic ear and a kindly, loving, unconditional acceptance of Anakin exactly as he is—the sort of acceptance Anakin could never get from another Jedi. Not even from Obi-Wan. He can tell Palpatine things he could never share with his Master.
    He can tell Palpatine things he can't even tell Padmé.
  • The Stormlight Archive: Teft and Lopen end up acting as Kaladin's Secret Keepers after Kaladin first discovers his magical abilities (though Teft actually knew about them before Kaladin even did). Later the rest of Bridge 4 gets let in on it, though it was kind of necessary seeing as Kaladin demonstrated said abilities fairly spectacularly. Also Shallan and Jasnah act as mutual Secret Keepers of their shared innate soulcasting powers, and Dalinar's sons and Navani keep the secret of Dalinar's visions.
  • Tamora Pierce's Tortall Universe: In Song of the Lioness, George, his mother, and Prince Jonathan all find out that Alanna is a girl in disguise, and keep her secret. Her guardian Coram knew from the start and helped her with the masquerade, and Gary finds out near the end of the second book (before it becomes public). Myles of Olau plays Secret Secret-Keeper until Alanna tells him the truth around the same time.
  • The Underland Chronicles:
    • Lizzie is often required to explain why her family members have disappeared for extended periods of time.
    • Mrs. Cormaci becomes this for the family starting in Gregor and the Marks of Secret.
  • In the Village Tales novels, the Duke of Taunton, being a member of the Privy Council and a retired major in the Intelligence Corps, is used to being one. Being left his Remittance Man brother's Compromising Memoirs, though, is specially vexing. And of course the Roman Catholic and C of E (sky-High, Anglo-Catholic) clergy in the District have heard more confessions than the Duke's cook has served hot dinners.
  • In the Warrior Cats series, there's quite a few.
    • Several cats help keep forbidden relationships hidden. Fireheart and Mistyfoot do this for Graystripe and Silverstream's relationship, and Squirrelflight raises Leafpool's kits as her own.
    • In the second series, Leafpaw is the only cat that knows about both prophecies: the one that the traveling cats recieved, and the fire-and-tiger sign.
    • Jayfeather, Lionblaze, and Leafpool know that Hollyleaf killed Ashfur, but they decide not to reveal it to the Clan. Apparently keeping secrets just runs in the family.
  • In The Wheel of Time, three people know Perrin can talk to wolves: Egwene, Faile, and Elyas.(Who can also talk to wolves, and helped Perrin discover that he had the ability in the first place.) Also Moiraine knew about it too, but she was out of the picture, and believed dead for 8 books and has only just returned.
  • Zorro's mute butler effectively hides his secret identity, and helps him out on more than one occasion.

    Live-Action TV 
  • Another Period has two, both in the servants' quarters at Bellacourt Manor:
    • New maid Celine/Chair. Hamish the outwoodsman knows her as the former prostitute who swindled him; to family patriarch Commodore Bellacourt, she's his mistress and the mother of their illegitimate child-to-be.
    • Head butler Peepers, unbeknownst to the Bellacourts, was adopted by a family of American Indians.
  • Aquila: Mrs. Murray discovers the ship and keeps the secret in the second season.
  • Arrowverse:
    • Barry Allen and Oliver Queen are mutual secret keepers for each other. Both heroes also have a small team of allies who know their true identities.
    • In Barry's case, some of his enemies also know the truth, including the Rogues, after Cold forces Cisco to tell him the Flash's identity by threatening his brother. Since Cisco's brother was (presumably) in the room, he also must know. Eventually, Barry reveals the truth to his father (who pretty much knew anyway) and Eddie (whose help they needed to keep Iris from looking into her colleague's disappearance). The Reverse-Flash knows because he's pretending to be Harrison Wells and is from the future anyway.
    • In the Elseworlds (2018) crossover, Supergirl quickly becomes this for Batwoman. She uses her x-ray vision to look under her mask, but promises not to tell the boys. It's also implied that Kara already knew Bruce Wayne was Batman, since she's from a different universe where he's still active. She spends too much time pointing out the suspicious parallels between Bruce Wayne and Batman for it to be anything but intentional.
  • On Bewitched, Darrin Stephens acts as a Secret Keeper for not only his wife, Samantha, but also for his mother-in-law, Endora, her father, Maurice, as well as Samantha's many aunts, her Uncle Arthur, and Samantha's witch-doctor, Doctor Bombay, all of whom interact with various mortals during the course of the series.
  • On Bosom Buddies, Amy kept the secret that Kip and Henry were pretending to be their own sisters during the first season. In the second season, the remainder of the main were also in on the secret and helped maintain the ruse.
  • Buffy the Vampire Slayer:
    • The Scoobies are Buffy's Secret Keepers, but they all stretch the definition of "normal". Many of the Scoobies start outside the fold as "normals" and eventually get pulled into Scoobiedom (Cordelia, Oz, Tara). Another example would be Buffy's mother Joyce after Season 2.
    • Principal Snyder knew about the existence of the Hellmouth underneath the high school all along — and was even charged to keep it a secret from as many people as possible by the Mayor himself. That said, Snyder was completely oblivious to Buffy's identity or to the existence of the Scooby Gang.
  • Charmed (1998)
    • There's a fairly extensive list of mortals who know that magic is real, and specifically that the Halliwell sisters are actually witches. The most notable examples are Victor Bennett (father to three of the four sisters), Inspector Andy Trudeau (oldest sister Prue's Love Interest)note , Inspector Darryl Morris (Andy's partner), Homeland Security Agent Kyle Brody (another Love Interest, who eventually dropped from this trope when he died and became a Whitelighter), Homeland Security Agent Murphy (who figured out that something was up when the sisters faked their deaths and subsequently helped them "come back from the dead"), and Henry Mitchell (youngest sister Paige's boyfriend, whom she eventually married). In the season nine comics, Phoebe's boss Elise Rothman also becomes a Secret Keeper when the sisters save her life (Paige had to heal her, and then they had to magically make her look like she was still injured in order to properly prosecute the man who had attacked her).
    • On a more personal level, the taboo on Witch-Whitelighter relationships meant that when the sisters' mother Patty had an unexpected fourth pregnancy, it had to be kept secret from everyone. The only person Patty and her partner trusted with that knowledge was her own mother.
  • El corazón nunca se equivoca: Ari becomes this to Carlota after finding out about her relationship with Ubaldo. Later on, they tell Temo, so the three of them are keeping the secret, mostly from Diego (Ubaldo's son).
  • Jonathan is this for the ghostly Ainsworth sisters in Dead Gorgeous.
  • In Dexter, Harry, Dexter's foster father, is the typical example. The second is the Ice Truck Killer, Dexter's nemesis, who is appropriately revealed to be Dexter's biological brother.
    • He gets another one in season 7 when his adopted sister Debra walks in on him killing season 6's Big Bad and he's forced to confess.
  • In Fate: The Winx Saga, Sky's the only one Stella tells about her abusive mother, and the incident with her previous roommate.
  • In Free Spirit, Gene and his older siblings, Robb and Jessie, become forbidden from telling anyone about their nanny, Winnie Goodwin, performing witchcraft.
  • On Friends, Chandler and Monica's relationship was initially kept a secret because they didn't want to deal with their friends pestering them, but Joey figured it out on his own and they swore him to secrecy. He was the only friend who knew about it for the next several episodes until the other friends eventually found out. However, when Rachel and eventually Phoebe found out, Joey also had initially to keep their knowledge of the relationship a secret.
  • In Fringe, Agent Lincoln Lee from the Alternate Universe Fringe Division prides himself as this when he is speaking to (Alternate)Olivia. Later, he decides that he "can't keep secrets for shit" and spills it all to (Alternate)Charlie Francis.
  • Future Cop: None of the cops know John Haven is an android except his partner Joe Cleaver.
  • Game of Thrones:
    • Ned Stark took the secret of his illegitimate son Jon Snow's parentage to the grave. Through Bran Stark's visions, it is revealed to the audience in Season 6 that Jon is Ned's nephew, as Jon is the son of Ned's sister Lyanna Stark by Rhaegar Targaryen. On her deathbed, Lyanna asks Ned for a promise to protect her newborn son (Jon) from Robert Baratheon as Robert wants to kill everyone — even the children — who have Targaryen blood. Out of love for his sister Lyanna and nephew Jon, Ned brings his newborn nephew home with him to Winterfell, claims him as his illegitimate son to keep him safe, loves and raises Jon as his own son alongside his children with Catelyn, and spends the rest of his life keeping this secret to protect Jon.
    • Bran is the only other Stark (living, assuming that Benjen Stark himself doesn't know) aware that his brother Jon is actually his Aunt Lyanna's son with Rhaegar Targaryen, making Jon his blood cousin and the nephew of Ned Stark.
    • Brienne is one of only three people who know the truth about why Jaime murdered Aerys Targaryen.
    • Roose hides the truth about Bran and Rickon being alive, to ensure his rule over the North.
    • Ramsay is also one of the few aware that Bran and Rickon are alive, but keeps the secret for his family's political gain.
    • Howland is the only person living that knows what went down at The Tower of Joy, at least until Bran gets to see it in a vision.
    • Tyrion shares with Daenerys the real reason why Jaime killed her father, Aerys, at the same time revealing that Jaime told him the truth, which did not happen in the books. On the other hand, he declines her request to tell her why he killed his own father, which he says is a secret he might tell someday, if given enough wine.
    • Averted with Stannis Baratheon; the first thing he does with the information about Joffrey's true parentage is to tell it to as many people as possible so no one can claim ignorance, and says that Ned only telling him was a mistake on Ned's part. This is a notable change from the books, where he was the one who brought his suspicions to Jon Arryn in the first place and helped him investigate, but then left court out of fear for his life and resentment Robert didn't make him Hand. It was only Ned Stark and his older brother's death that pushed him into action, and made him take a more decisive stance.
    • Aside from Jaqen, Gendry is the only one who knows that Arya is actually Arya Stark.
  • A bit of Irony considering their later relationship in Gotham where Bruce Wayne and Alfred are so far the only two who Gordon revealed that he intended to bring down the corruption of the police and the city and that he was planning to play along inside the system to do it.
  • In the TV series adaptation of The Green Hornet, Lenore "Casey" Case and District Attorney Frank Scanlon keep the Hornet's and Kato's secret identities (Scanlon parallels the use of Police Commissioner Higgins as a secret keeper and law enforcement contact in the original radio series).
    • Late in the radio show's run, Lenore Case learned about Reid's second career as the Hornet and helped cover for him.
  • Hannah Montana's secret keepers (aside from Bobby Ray and Jackson) are Lilly and Oliver. Later, there's Jake Ryan, Lilly's mother, Oliver's mother, and Officer Daria and his daughter. That is until everyone in her hometown (plus one British journalist and his daughters) discovers the fact in the movie... and by the end of the series, everyone in the world knows it.
  • Averted in Henry Danger; Henry has to keep his job as a sidekick a secret from is friends and family. Though his best friend, Charlotte, later becomes one.
    • By the end of Season 2, Henry's best friend, Jasper, becomes one.
    • The Game Shakers Babe, Kenzie, Trip, and Hudson in the Crossover episode "Danger Games" after Hudson unknowingly chews a piece of Henry's gum that transforms him into Kid Danger.
    • Gwen in "Love Muffin" becomes a villainous one for Ray and Henry (as well as knowing Charlotte and Jasper work for Captain Man as well).
    • Piper Hart in "Sister Twister" after she stumbles into the Man-Cave and sees Henry and Ray transform in front of her.
  • In Heroes:
    • Zach is Claire's Secret Keeper for the first half of Season 1.
    • Ando is Hiro's Secret Keeper.
    • Claire herself becomes the Haitian's Secret Keeper for a while ... just not about their powers, which Noah already knows about, but about the Haitian not being mute.
  • Tony Nelson on I Dream of Jeannie. Roger Healey also became one of these after the first few episodes.
  • Variation in Knight Rider, combined with Dismantled MacGuffin: KITT's super-strong armor was made from a secret formula that used three ingredients. Three trusted men were each told two parts of the formula. This way, no one man could make more on his own, but any two of them could.
  • A two-way version between Arc and Ciara are this in Knight Squad. Arc knows Ciara is the princess and her father won't allow her to be a knight while Ciara knows Arc is not of noble Dragon Blood, nor is he from Astoria, and thus is ineligible to be a knight.
  • Almost all the major Muggle characters on Kyle XY end up being this, although in this case it's also to help Kyle and Jessi. At one point, it causes Josh to spills all his other secrets. Josh also briefly doubles as one for Andy, before her cancer is made public.
  • In The Listener, Mercer, Oz, Marks and later Olivia is this for the mind-reading Toby. In season two, Detective McCluskey and Dev Clark join the team.
  • Marvel Cinematic Universe:
    • In Season 2 of Agents of S.H.I.E.L.D., May is a Secret Keeper for Coulson, who's got a strange compulsion to carve alien symbols into the wall due to being resurrected with Kree blood.
    • Daredevil (2015):
      • Claire Temple, Foggy Nelson and Father Lantom eventually become this for Matt Murdock about his Daredevil secret identity as season 1 progresses. Only Father Lantom figured it out himself; Foggy found him beaten up from a fight with Wilson Fisk and Nobu, and Claire after he was lured into a trap by the Russians.
      • In the final episode of season 2, Karen Page becomes one, and the first person to whom Matt openly admitted the secret of his own volition.
      • While never stated out loud, it is heavily implied that Frank Castle is one as well and figured out Matt's secret identity when he saw him out-of-costume at the hospital.
      • Elektra and Stick are aware of it, though this is a minor example in that they're minimally involved in Matt's day-to-day life.
      • The rest of The Defenders know who Matt is: Jessica figured it out herself with her investigative skills, and Matt introduces himself and who he is to both Luke and Danny. It's also likely that at least some of their allies know this as a result. This is another minor example, however, since these characters knowing that doesn't impact Matt in his own series.
      • Several more people end up learning the secret during season 3. The first is Sister Maggie (who is his mother). Towards the end of the season, Matt unmasks himself to Ray Nadeem, making Nadeem only the second person (after Karen) he's ever willingly revealed his secret to, and it's to show his gratitude to Nadeem for helping Foggy and Brett rescue Karen from an assassination attempt by Dex ("You saved Karen Page's life tonight, so I owe you"). This unmasking also serves a second purpose of making sure Nadeem knows that he can trust Nelson & Murdock to help him speak out against Wilson Fisk's criminal activitiesnote . Unfortunately, their efforts to put Nadeem before the grand jury fail as Fisk intimidates the jurors. He is subsequently killed at his house by Dex on Vanessa's orders. Matt learns about this from Fisk's fixer Felix Manning. So as a result, in the season finale, after defeating Fisk and Dex in a Mêlée à Trois, Matt unmasks himself in front of Fisk and Vanessa, and blackmails Fisk into being a secret keeper by threatening to go public with his knowledge that Vanessa ordered Nadeem's death if Fisk tries to out Matt or hurt Karen and Foggy.
    • Iron Fist (2017): At the start of the show, Ward Meachum is the only person besides the Hand and Harold's assistant who knows that Harold Meachum is alive. Ward has been keeping the secret for thirteen years and it's implied that the stress brought on by this secret-keeping is part of what has contributed to his drug issues.
    • Luke Cage (2016): Mariah Dillard and Captain Thomas Ridenhour dated for a few years in high school. Ridenhour thus is one of only a few people who know that Mariah's daughter Tilda was actually the product of her being raped by her uncle Pete, and not Mariah's gay husband Jackson Dillard.
  • Gaius from Merlin is the only person (as yet) in town who knows about Merlin's powers, as well as being his mentor.
    • Lancelot knows too, but has agreed to keep it a secret.
    • Likewise, Merlin is Lancelot's Secret Keeper: he's the only one who knows that Lancelot is still in love with Guinevere.
    • On the same show, Gaius, Merlin and Gwen are the only ones that know Morgana has precognitive dreams.
      • Inverted in regards to Morgana in season 3. For the first half of the season only Merlin and Gaius know the secret that Morgana is evil, but they are unable to tell anyone about it without any proof, despite dearly wanting to warn their friends. The same thing happens with Agravaine in season 4. They both reveal themselves as traitors.
    • In season 5, Mordred and Merlin are this for each other, as they're both warlocks.
  • On NCIS, this comes up in Gibbs' Rule #4: "The best way to keep a secret: keep it to yourself. Second best: tell one other person, if you must. There is no third best."
  • New Amsterdam: Omar (and at least one other kid of John's) in regards to their father's immortality.
  • The Outpost: As of "A Narrow Escape" Mary turns into this for Kate in regards to her secret identity as Batwoman.
  • The Power Rangers series in general has a tendency for family members of the rangers to find out their secret identities; in these cases, they only appear in one episode. Some examples include:
    • In Power Rangers Zeo, Red Ranger Tommy's brother David.
    • In Power Rangers Wild Force, White Ranger Alyssa's father.
      • In the preceding episode, "Three's a Crowd", Kendall, a girl Black Ranger Danny is madly in love with, as well as a rich young man trying to win her love, both discover Danny's identity. Neither of them show any desire to reveal his secret, but the would-be lover does tell Danny that he shouldn't date Kendall due to his responsibilities, and while it's somewhat implied that he's just being a Jerkass so that he can have Kendall to himself, Kendall ultimately says the same thing at the episode's end.
    • In Power Rangers Ninja Storm, Red Ranger Shane's brother Porter.
    • In Power Rangers Jungle Fury, Blue Ranger Theo's twin brother Luen.
      • Also, Fran, who discovers the secret identities of her fellow pizza-parlor staff around the time they get their Mid-Season Upgrade.
    • Mighty Morphin' Power Rangers: the first people to discover the Rangers' secret identities were Rocky, Adam, and Aisha, and they pledged to keep them secret. They weren't able to play this role for very long however, as Jason, Zack, and Trini were soon "sent to a peace conference", and Rocky, Adam, and Aisha became their replacements as Rangers.
      • Although it never happened on the show, it was originally supposed to be revealed that Ernie from the juice bar had known the secret identities of the Power Rangers all along. This is why he would always give them drinks on the house as a sign of appreciation.
    • Power Rangers Mystic Force has Toby, the Rangers' boss at their civilian jobs, but he doesn't find out until the fourth-to-last episode... though they did use a Sarcastic Confession on him at an earlier point to explain why they continuously ran off during their shifts. Subverted, however, in that he pretty much tells the whole town in order to gather enough energy to give the Rangers the final boost in power that they need to destroy the Big Bad.
  • In Psych, the ones who know from the outset that Shawn Spencer is a Phony Psychic are his father, Henry, and his best friend, Gus.
    • Throughout the series, Lassiter claims to not believe him and wants to expose him as a fraud, even hooking him up to a polygraph machine (which Shawn beat due to his father's extensive training). It would seem Da Chief doesn't believe it either, but Shawn is really good at solving crimes, so she doesn't care how he does it.
      • In the finale, Shawn moves away from Santa Barbara and leaves a DVD for Lassiter where he confesses the truth. By this point, however, the two have grown to consider each other friends; Lassiter doesn't allow the recording to progress past "I am not" before he stops it and destroys the disc.
    • As of Season 5, there is also amateur profiler Declan Rand and, oddly enough, Curt Smith from Tears for Fears.
    • And as of Season 7, Juliet finds out, at first reacting in anger but eventually resolving to keep the secret once Shawn proves that he cares more about her than anything else, including his work at the SBPD. She also realizes that the cases he solved might be jeopardized if he told the truth about it.
  • Pushing Daisies: Emerson and Chuck are keeping Ned's secret that he can bring the dead back to life, while Ned, Emerson and Olive are keeping Chuck's secret that she's not dead, but Olive thinks that Chuck faked her death whereas Ned and Emerson know that she did die and was brought back.
    • Also, Olive eventually becomes Lily's secret keeper, hiding the fact that Chuck is actually Lily's daughter, not her niece, conceived during an affair with her sister's fiance. Olive gets so overwhelmed by all the secrets that at one point she runs away to nunnery.
  • The writers of Smallville have had to let so many people in Clark's secret to keep the show fresh that Lois Lane is about the only one who doesn't know by now. Clark told Pete his secret in season two when the latter discovered his spaceship, Alicia revealed Clark's powers to Chloe in season four and Chloe tells him she knows in the season five premier, Lionel found out in season five, Lana started causing trouble around season six and found out in the finale, Lex found out in the season seven finale but was then Put on a Bus.
    • Lois seems to know now and is currently a Secret Secret-Keeper as Chloe was before her.
      • As of the episode "Isis", it's official; Clark confessed that he's the Blur to Lois, who responded by jumping into his arms, kissing him and asking, "What took you so long?"
      • Though it did take even longer for her to find out about the Justice League, which led to some particularly funny moments, like when Tess, despite knowing that Lois knows Clark's secret, still plays dumb because Lois doesn't know that Tess knows (and more than she does to boot). The first part of season ten gets a bit confusing at times.
    • Tess was a Secret Keeper as well, which was particularly important since she was one of the bad guys, yet she still kept his secret from everyone. She had a Heel–Face Turn, though.
    • The villain Toyman figured out Clark's secret, but agreed not to tell anyone as it's more fun that way.
  • The family (yep, her parents too) of Raven from That's So Raven, is fully aware of her secret Psychic Powers, most likely even before she was. These were later revealed to be a hereditary trait. The ability is treated serenely since the very first episode of the series, despite the sitcom-y mishaps that regularly occur because of them.
    • It's also played straight with Eddie and Chelsea.
  • Mrs. Roper on Three's Company finds out pretty quickly that Jack isn't actually gay, but keeps the knowledge from her husband so Jack can continue sharing an apartment with two women.
  • Cherry becomes one for The Thundermans in "A Hero is Born".
  • In Tinker Tailor Soldier Spy, only George Smiley ever knew Control's real name.
  • On Torchwood, Rhys Williams (Gwen Cooper's fiancé), stumbled onto proof of just what it is that Gwen does for Torchwood. Captain Jack Harkness decides to not dose Rhys with Retcon (Torchwood's amnesia pill) after he sees how much good it does Gwen to have someone outside of Torchwood to talk to about work.
  • Warehouse 13:
    • One of the rules for anyone who works for the Warehouse is that they may reveal the true nature of their work to one outsider, but only one. This never became a plot point in the main series, however.
    • It's far from unheard of for an outsider to discover the Warehouse in some way, but anyone who learned enough to be a threat was either recruited or killed; the only known exceptions are Claudia's brother, Mrs. Frederic's grandson, and Monty the Magnificent, an elderly magician who was let in on the secret due to his passion for "real magic".
  • In Wolfblood, Maddy and Rhydian act as secret keepers for each other. At the end of season 1 Tom and Shannon find out, but agree to keep it a secret.

  • "Secret" by The Pierces plays this up for drama. The singer seriously seems like she will kill her friend if she tells her secret.
    "If I show you then I know you won't tell what I said. Cause two can keep a secret if one of them is dead."

  • Becoming increasingly common in The Adventure Zone: Amnesty: at first, the Pine Guard are the Secret Keepers for the folks at the Amnesty Lodge, and vice versa for Duck and Aubrey's magic powers. Then they recruit local city worker Pigeon to help out with a case. Then Aubrey accidentally reveals her powers to local gang of adrenaline seekers, the Hornets, who proclaim themselves the new protectors of Kepler.
  • The Voidfish is this in The Adventure Zone: Balance. Any information consumed by a Voidfish becomes unknowable to anyone who hasn't been inoculated with the Voidfish's ichor. Trying to verbally communicate the information replaces it with staticky noises, and The Adventure Zone reveals that information about it in writing is replaced with static as well. There's also a second Voidfish which has consumed all the information about the IPRE's crew and their mission, including the true identities of Davenport, Barry Bluejeans, Lucretia, the Tres Horny Boys, and Taako's sister Lup, as well as the existence of the Hunger.
  • By the end of the Gemini Arc of Sequinox, Ethan has figured out who the Sequinox members are and subtly lets them know he'll keep their alibi.

  • Dawn of a New Age: Oldport Blues:
    • Ivy accidentally uses her invention superpower in front of her parents. When she explains to them what's happened to her, they promise to keep it a secret for the sake of her safety.
    • Benjy's mother, owning to her work as a psychiatrist, has clued in on her child's struggle with his identity, but keeps it to herself. When he's with the other characters, he insists that his mother can be trusted with a secret.
    • Jae has confessed her crush on Ivy to her friend Jemimah. That said, her description of Ivy is so overblown that Jem wouldn't be able to put a name to the face even if she wanted to.
  • Dino Attack RPG has the siblings Bart and Carrie Enderson, both bartenders who both kept secrets for a different mercenary. To add a cruel twist of irony, neither knew about the other's activities (at least not until after the war and both mercenaries were dead), and one of their clients was determined to kill the other.

  • Westeros: An American Musical: Eddard mentions keeping a secret in "Hand-Holding". The only info he gives about the secret is that it involved a promise and that he uses it to explain his part in letting himself and Robert drift apart over the years. Those hints point at it being the one about Jon Snow's parentage he's keeping in the original story, but its a Twice-Told Tale due to the play making no clear allusion to a familial relation between Eddard and Jon Snow despite both characters appearing onstage in the 2019 version.

    Video Games 
  • In Crescendo (JP), Nurse Kaori knows about Yuka Otowa being a teen prostitute. She doesn't exactly approve, but doesn't say anything because Yuka is about to graduate and she doesn't want her to be expelled in her last year.
  • Dragon Age: Inquisition has several:
    • Varric is the only one who knows the exact whereabouts of Hawke. He only breaks the confidence when he realizes that the spoilered character is desperately needed.
    • Cassandra and (later) the Inquisitor are the only ones who know about Cullen's lyrium withdrawal. The Inquisitor is also the only one to whom he confides the torture he endured during the events of Dragon Age: Origins; by his own admission later, he has never told the story to anyone else.
    • In world states where the Dark Ritual was performed, Leliana's dialogue heavily implies that she is aware of Kieran's true nature. This by extension makes Leliana one of the very few non-Wardens to know the real reason why only Grey Wardens can end Blights.
  • In the second game of the Eagle Eye Mysteries series, protagonists Jake and Jennifer Eagle, as well as your unseen player character, become Secret Keepers in "Case of Blood's Bold Bauble." A distant relative tells you that there's a particular story that has been kept within his immediate family for generations: that three centuries ago, an ancestor found a small but very valuable ruby that was dropped by the titular thief Captain Blood and his gang, who beat a hasty retreat after attempting to break into the Tower of London to steal the Crown Jewels. The ancestor, fearing he would be implicated in the robbery if he tried to return the ruby, kept it for himself and only told its story to his son, who in turn told the tale to his son, and so on. By the time you, Jake and Jennifer have been told the story, the secret's origins are so distant that the ruby's revelation can no longer hurt the family; the only reason the relative tells you the story is because he thinks one of his three children, who are currently the only other people who know the family secret, might have broken the bond of parent-child trust and told the secret to cash in on it—hence, the beginning of your covert investigation to find out who's responsible without tipping off any of the children as to your knowledge. Turns out that none of the kids talked—the oldest son is set to star in a film about a very different Captain Blood, and the misunderstanding arose from that.
  • In The Elder Scrolls series, the leaders of the Blades, who have long served the Tamriellic Emperors as bodyguards and spies, are naturally this toward the emperors as well as being Confidants. For example, Blades Grandmaster Jauffre was entrusted by Emperor Uriel Septim VII to take and hide away Uriel's bastard son, Martin. This was kept secret, even from Martin, until the events of Oblivion forced Jauffre to reveal it.
  • In The Legend of Zelda: Majora's Mask, Kafei's de-aging and subsequent loss of the Sun's Mask are kept secret from his fiancee Anju by the Curiosity Shop owner, the Postman, and his father Mayor Dotour. Upon delivering a letter from Kafei to Anju, the Postman goes so far as to use the Mathematician's Answer approach to avoid saying what's going on.
  • Mass Effect: Andromeda: Ryder learns halfway through the game the true purpose of the Andromeda Initiative, that it was funded by an anonymous and not-so-beneficial backer to escape the oncoming Reapers, but never shares this with anyone, their sibling included. It's intimated that Pathfinder Zevin Raeka knew a few of Alec Ryder's own secrets, but she refuses to share them.
  • Minecraft: Story Mode: After defeating the Wither Storm, Jesse can convince Gabriel to either come clean about the Order of the Stone or allow the people to continue believing in their legend.
  • Persona 5: The Arcana-based social links in this game are actually called 'confidants' to fit with the vigilante theme.
    • Moon Confidant Yuuki Mishima figures out that the main character Joker is a member of the Phantom Thieves almost as soon as they form. Fortunately, he's also one of Joker's biggest supporters, being the owner and admin of Joker's official fansite.
    • Towards the endgame, Joker's guardian (and Hierophant Confidant) Sojiro Sakura also figures out what Joker and his friends have been up to when the calling card for one of the Phantom Thieves' targets comes into their possession.
    • All of the max-ranked NPC Confidants will figure out that Joker's a Phantom Thief, mostly because the people responsible for ruining their lives conveniently undergo changes of heart right after the confidants told Joker those people's names. This applies to seven out of the eight of them (Fortune, Hanged Man, Death, Temperance, Devil, Tower, and Star), while the Sun Confidant is just smart enough to put the pieces together on his own. Luckily, they all resolve to keep Joker's secret for helping them out.
      • In Royal, the Counsellor Confidant also falls under this, with Joker's help being instrumental in helping him finish his research. Though he played Secret Secret-Keeper almost from the start, having spied Joker and his team reappearing after their third trip to the Metaverse.
  • In South Park: The Fractured but Whole, if you choose to play as a girl/other instead of a boy, Wendy Testaburger reveals she knew that you were such the entire time, but kept quiet about it out of respect for (what she believes is) your desire to remain mysterious.

    Visual Novels 

  • In Avialae, Gannet's neighbour Bailey is initially the only person who knows about Gannet's growing wings and helps keep them a secret from his family and schoolmates.
  • In The Dreamer, Yvette is the only person who knows about Beatrice's time-travel dreams.
  • In Electric Wonderland, Aerynn Arlia's friends and co-workers must make sure that the authorities of Cyberspace never find out about her performing illegal witchcraft.
  • El Goonish Shive:
    • Outside the "core" cast, Melissa is Noah's secret keeper.
    • Justin is not only the Secret Keeper for the core group, keeping their activities secret from everyone (especially George), he's also keeping Noah's Secret Identity as the Child Left Behind a secret even from his closest friends.
  • Sticky Dilly Buns:
    • Ruby has kept her sister Amber's career as a porn star secret from their parents for years, despite being a very truthful person by nature and despising Amber for her actions.
    • Dillon respects Ruby's desire to keep, first her having spent an evening in male disguise, and second her new-found love of Yaoi, secret from the world in general and Amber in particular. (Presumably, Ruby either wants to preserve a sense of superiority over Amber, or thinks that her sister would tease her mercilessly with such facts.)

    Web Original 
  • Lester from Angel of Death is the only human outside of The Men in Black who knows Cody is a lich.
  • Brennus: The main character himself keeps secret the fact that his older sister Amy is also the extremely powerful supervillainess Mindstar, in spite of being himself a superhero. It gets deconstructed, because Basil finds it increasingly difficult to live with the knowledge of what she's done, and continues to do. It's especially difficult because his teammate Hecate wants to kill Mindstar for killing her cousin.
  • Pepper and Sarah accidentally become these to Jake after a Glamour Failure in Magical Border Patrol.
  • In Noob:
    • Gologotha is the only one who knows how Gaea got her avatar back after getting banned permanently from the game for borderline illegal activity until an unexpected third party makes the bargaining chip's existence public.
    • Judge Dead is all but stated to have known of the secret revealed in the Wham Episode all along.
  • In Red vs. Blue: Reconstruction, Agent Washington hides the fact that he has all the memories of the Epsilon AI, which is the manifestation of the Alpha AI's memories, which itself was created from the Director's mind. This means that he has knowledge of both the torture used to split the Alpha into separate AIs and all of the access codes used in the Director's lab.
  • In the Whateley Universe, hardly anyone outside of Superhero School Whateley Academy knows Phase is a mutant: just her big sister Gracie and Gracie's spouse, and their two renters.

    Western Animation 
  • Adventures of the Gummi Bears: Cavin and, later, Princess Calla know the truth and keep the secret of the Gummi Bears.
  • Trixie and Spud, from American Dragon: Jake Long. In the episode where they find out about Jake's dragon powers, Jake's grandfather gives him a potion that will erase their memories and put everything back the way it was to maintain the Masquerade around the magical world. In a subversion of Status Quo Is God (and possibly as a "screw you" to The Life and Times of Juniper Lee, which had a reset after her friends found out), he pours it out in a potted plant rather than dose their drinks, and they continue to help him in both forms.
  • Arthur: In "Brain's Shocking Secret", it's revealed that the Brain was held back in kindergarten; Prunella, and then Binky, are the only other ones who know about it.
  • Pauline from Atomic Puppet is the only one (asides Mookie) who knows that Joey is Atomic Puppet, and thus the only one besides Joey who knows that Captain Atomic has been turned into a talking sock puppet by Mookie. As the series progresses though, a few more characters learn it as well, primarily the show's other superhero characters and more significantly Joey's dad in the first season finale.
  • Batman: The Animated Series:
    • Formerly washed-up actor Simon Trent is implied to have become this to Batman after Bruce says something he said as Batman at a book signing.
    • In the episode, "Over The Edge", Barbara Gordon decides to tell her dad that she's Batgirl. He only shushes her before she can say anything, but not so subtly hinting that he already knows, and is very proud.
  • Batman Beyond:
  • ChalkZone: After Rudy's best friend, Penny, learns about ChalkZone, she swears to keep it a secret.
  • Chip and Potato:
    • In "Bye Bye Dazzles," when the Dazzles move away, Chip reveals to them that Potato is a mouse. They agree to keep the secret.
    • Chip flirts with the idea of revealing the secret to her best friend Nico in "Chip's School Trip" and does tell him "Hospital Trip Chip," allowing Potato to stay overnight with him because he's in the hospital, having broken his arm, and she wants to cheer him up.
  • Danny Phantom:
    • The lab accident six months before the series pilot turned Danny into a half-ghost. His best friends Sam and Tucker witnessed it, and so they knew from the start. Ten episodes in, Danny's sister Jazz finds out but chooses to play Secret Secret-Keeper until season three. Before Jazz, we also get multimillionaire supervillain Vlad Masters/Vlad Plasmius; a nearly unspoken agreement has them keeping each other's identities secret.
    • Danny himself plays Secret Secret-Keeper for Valerie Gray being a ghost hunter...up until the end of Season 2, when he exposes her to her father to prevent her from taking his place in piloting an experimental power suit.
  • Darkwing Duck has sidekick Launchpad (who calls him 'DW' even when Darkwing's in civilian garb) and daughter Gosalyn (who occasionally calls him 'Dad' when he's in costume). Somehow neighbour child Honker seems to be in the know as well. No information's shown on if Morgana MacAwber knows her Darkwing has a life as Drake.
    • She does. There's an episode where she meets Honker's family, after complaining that Darkwing never introduces her to any of his friends. She even calls him Drake in front of them.
  • Inverted in The Deep with Nereus. He often kept many details about whatever the Nektons faced in certain episodes secret from them, which would often cause them to distrust him.
  • Dee Dee, from Dexter's Laboratory, is the only main character who knows of Dexter's Lab besides Dexter himself. Others include Dee Dee's friends, Mee Mee and Lee Lee, and Mandark, who has a lab of his own (though not a secret one, since his constructions dwarf his house).
  • In Dragons: Race To The Edge, Astrid does not tell the other dragon riders that Heather, last seen working for dragon hunter Viggo and her psychotic brother Dagur, was actually The Mole in Viggo's camp.
  • Scrooge McDuck and Mrs. Crackshell are the only ones in DuckTales (1987) who know that Fenton is Gizmoduck.
  • Freakazoid! had Roddy and Cosgrove, and later Steff and Professor Jones as of "Mission: Freakazoid" when Cosgrove let it slip. He thought Steff already knew since she and Freakazoid were dating.
  • In Gargoyles, Eliza Maza and, later, Matt Bluestone work to conceal the existence of Goliath and his clan from humanity, as does David Xanatos when he's not trying to kill them. By the end of the second season, they fail spectacularly.
    • Matt Bluestone ends up being a Secret Keeper for the Illuminati too, despite his initial desire to bust their organization wide open.
  • In He-Man and the Masters of the Universe (1983), only a few others know Adam is He-Man: Cringer, Orko, Man-at-Arms, and the Sorceress. In the spin-off She-Ra: Princess of Power, his twin sister Adora has Kowl, Madame Razz, Light Hope, Spirit, and later, Loo-Kee who know her Secret Identity as She-Ra. The twins are, of course, also secret keepers for each other, so by extension, it is safe to assume those who know He-Man's secret also know She-Ra's, and vice-versa.
    • He-Man also, at the Sorceress's request, keeps the secret that the Sorceress is Teela's mother.
  • In Hey Arnold!!, Phoebe, Patty, Trish Wittenberg, Grandpa Phil and Brainy all know Helga Pataki's most dark and deep secret: her overwhelming love for Arnold.
    • As well as Helga's shrink Dr. Bliss, who is a Secret Keeper by way of professional confidentiality.
    • Helga admits it to Lila as well, threatening her with violence so she wouldn't tell.
  • Subverted by Gaz on Invader Zim. She discovers early on that Zim is an alien, but doesn't care. When Dib says "Zim's trying to conquer the world," Gaz replies, "But he's so bad at it." Which is true, but...
  • The Holograms (Kimber Benton, Shana Elmsford, Aja Leith, and Carmen 'Raya' Alonso) from Jem and the Holograms count here as well. They can't tell anyone about the supercomputer Jerrica and Kimber's late father made or else she could be used for evil. They also keep the secret that Jerrica and Jem are the same person.
  • Justice League:
    • One episode shows that part of the U.S. Government is this for Batman. Amanda Waller even uses this to intimidate the Dark Knight in Ultimatum:
      Batman: Who are you people?!
      Amanda Waller: That's a national security matter. And if I were you I wouldn't probe the situation too closely... rich boy.
    • Speaking of Batman, if anyone has a secret in the Justice League you can almost count on the Dark Knight knowing it. Best shown when they are considering sharing their secret identities with one another to go incognito as their civilian personas, and some of them have reservations about it; Batman impatiently blows each person's cover:
      Batman: Wally West! Clark Kent! Bruce Wayne! Get dressed!
  • Both averted and played straight in Kim Possible. Averted in that Kim's hero status is publicly known. Played straight with Ron Stoppable when he attended a ninja school; he promised Yori and Master Sensei that he wouldn't tell anyone about the school, even Kim. Later in the series, Yori allowed Ron to tell Kim (who had already discovered the truth about the school on her own). Presumably Kim then became a Secret Keeper for the school as well.
  • Kipo and the Age of Wonderbeasts: Lio Oak was well aware that Kipo wasn't fully human. But he was evidently planning to tell her at some point; he just didn't think that her Mute traits would show themselves so soon.
  • The Life and Times of Juniper Lee: Ah-Mah and Ray Ray Lee, Juniper's grandma and little brother respectively, and later her older brother, Dennis Lee. (Although they're not quite regular Joes — both can see magical creatures, and Ah-Mah was June's predecessor. One episode reveals Ray Ray's ability as being an accident. For Dennis, he can only see magical creatures when he wears a talisman.)
  • In the Animated Adaptation of The Mask, Stanley Ipkiss's Intrepid Reporter friend Peggy Brandt is the only person who knows that he and The Mask are one and the same. (Well, her and Stanley's dog Milo, anyway...)
  • Elena Potato and her cousin Lonzo in Monster Allergy.
  • Motorcity: Claire keeps secret that Julie's dad is the Big Bad.
  • Phineas and Ferb has Stacy Hirano becoming this for Perry in "Happy Birthday Isabella" to avoid having her memories erased, and having to sit through a scary movie she watched again.
  • In Pixel Pinkie, Anni is the only besides Nina who knows about the genie Pixel Pinkie, and often has to make up cover stories when Pinkie's magic causes thing to go awry.
  • Polly Pocket: The only ones who know of Polly's Pocket Locket and its shrinking powers are Lila, Shani, Paxton and Grandma Penelope. Nicholas also finds out midway through Season 1 and joins.
  • When Punky Brewster takes Glomer (a creature called a "glomley" who helps leprechauns within a rainbow land) under her wing, she takes it upon herself to keep him a secret. Punky's pals are also entrusted to keep Glomer a secret. Glomer himself has to stay inconspicuous, even at home, so Henry doesn't find out about him.
  • On Ready Jet Go!, Sean, Sydney, and Mindy, Jet's best friends, are the only people who know that Jet and his family are aliens, and keep the secret as best they can.
  • In The Rocketeer , Kit becomes the titular hero, and the only ones who know are her Grandpa Ambrose, her dog Butch, and her best friend Tesh.
  • Chloe Flan, Sabrina's Token Black Friend, who was invented wholecloth for the Animated Adaptation, Sabrina: The Animated Series.
  • Deconstructed in Scooby-Doo! Mystery Incorporated where Velma keeping Angel/Cassidy's Identity a secret unknowingly sets off a chain of events that causes the Downer Ending of the first season of the show.
  • The human friends of The Smurfs act in this role to prevent humans from ever getting their hands on them.
  • Sofia the First: The only ones who know of Sofia's powers from the Amulet of Avalor are her animal friends, Oona and the merfolk of Merroway Cove, and Aunt Tilly, the last of these due to being the bearer before Sofia. Her family eventually learns the truth in Elena and the Secret of Avalor.
  • Star Wars: The Clone Wars:
    • In "The Rise of Clovis", Rush Clovis figures out that Anakin Skywalker and Padmé Amidala are in a Secret Relationship, and also gets beaten up by Anakin. Clovis chooses to claim that his injuries were inflicted by an intruder that broke into Padmé's apartment and was chased off by Anakin rather than expose them, and he ends up taking the secret to his death in the next episode.
    • If "A Distant Echo" is any indication, Anakin has been making Captain Rex cover for him when he's holo-calling Padmé often enough that Rex obviously knows something about the true nature of their relationship.
  • Star Wars Rebels: In "Twin Suns", Ezra Bridger and Chopper learn Obi-Wan Kenobi is alive on Tatooine, but promise not to tell. In the last scene, Ezra keeps the secret by lying to Kanan, Hera and Zeb about this information. The episode also reveals that Bail Organa lied to the entire Rebellion about the same issue.
  • Star Wars Resistance: When Kaz starts off on his spying mission on the Colossus, the only people who know are BB-8 (who, as a Foregone Conclusion, leaves before the end of the first season and is replaced by CB-23) and Jarek Yeager, Kaz's boss at his cover job as a mechanic. Torra Doza, the daughter of the Colossus' owner, eventually figures out that Kaz is a spy but keeps this to herself. By the end of the season, Kaz's affiliation with the Resistance becomes widely known when the heroes have to drive the First Order off the Colossus. Tam doesn't take it so well...
  • Richie from Static Shock, who later becomes a superhero himself.
  • Steven Universe: In "A Single Pale Rose", Pearl is revealed to be this, as she was the only one who knew that Rose Quartz and Pink Diamond were the same person, but Pink ordered her never to tell anyone.
  • In Superman: The Animated Series, when Lois began dating Bruce Wayne in a three-part crossover, she ends up finding out that he's Batman. The part that ate at her the most was that she was sitting on top of what could possibly be the biggest story of her career, "Batman Unmasked", and there wasn't a thing she could do about it.
  • In Vampirina , the only ones who know that Vee and her family are vampires are her best friends Poppy and Bridget. Edgar himself also finds out in the season 2 finale "Ghoul Guides Save The Day".
  • Wish Kid: Aside from Nick, only two people know about the glove: his best friend and his little sister, who's still a baby and can't talk yet.
  • WordGirl: The only one who knows of WordGirl's secret identity as Becky Botsford is her sidekick Captain Huggyface, who constantly warns her not to in order to keep her home planet from great risk. He is eventually joined by her adoptive brother Bampy, and later on her friend Rose.
  • Young Justice
    • Robin continues the trend when Artemis reveals she's the daughter and sister of Sportsmaster and Cheshire, respectively. Robin admits he knew all along and that it didn't matter to him.
    • Superboy similarly knew Miss Martian's true form was a ghastly, gangly white alien all along and simply didn't care.
    • In a twist on the usual Secret Identity trope, Robin is hiding his civilian identity from his superhero teammates. Word of God (and Free Comic Book Day tie-in) is that while Batman has forbidden him from revealing his real name, he told Wally anyway. It's also likely that Haly, his old circus Ringmaster, knows he is Robin as the man instantly recognized "Dan's" moves to be those of Dick Grayson's and knowingly accepted his I Was Just Passing Through excuse for showing up, saving the day, and moving on without asking a single question.

    Real Life 
  • Lawyers (at least in the United States, the United Kingdom, and some other common law jurisdictions). While there are a few exceptions to attorney-client privilege (generally having to do with preventing reasonably certain serious bodily harm), for the most part, an attorney can't reveal anything that their client tells them in confidence (unless, of course, the client says it's okay beforehand). This means that in most, if not all, U.S. jurisdictions that if an attorney find out their client committed a crime for which an innocent person's in jail, their ethical obligations to their client prevent them from saying anything without their client's permission, even if the other person is serving a life sentence. Keeping Secrets Sucks.
    • In response to this dilemma, some state bars have added rules that allow for limited disclosures in this situation, arguing that justice demands the innocent go free.
    • Similarly, although doctors are required to report evidence of a crime (gunshot wounds, suspected child abuse, etc.), most details of your medical history are protected by doctor-patient privilege. The exception comes when you threaten to yourself or others or when you are no longer capable of making decisions on your own and someone has to make decisions for you.
  • Catholic priests are bound by The Seal of the Confessional to never divulge what anyone says in confession, even if the person confesses to a crime. A priest violating the seal would risk laicisation (defrocking) and excommunication (which means that he could not receive any sacrament until he would, ironically, confess his violation of the seal).
    • There have been cases in the Papal States wherein the authorities broke the seal of the confessional, at papal direction, to arrest and prosecute murderers.
      • In the United States, the Supreme Court has ruled that gathering information by violating the Seal is a violation of the First Amendment and as such inadmissible in any court.
  • Stephen Fry has claims that Douglas Adams once told him in confidence "exactly why 42." Apparently, "The answer is fascinating, extraordinary and, when you think hard about it, completely obvious." However, he has vowed to take the secret with him to the grave.
  • Other than Carly Simon herself, NBC Sports' Dick Ebersol and Taylor Swift are the only people in the world who know for sure who "You're So Vain" is about — Ebersol won a charity auction to learn the identity in 2003, and ten years later Simon told Swift when they performed the song in concert.
  • J.M. Straczynski was this to Michael O'Hare. O'Hare played the lead character on Babylon 5 but left after the first season. The reason for the departure was that O'Hare was battling bouts of paranoid delusions; this both hurt Straczynski's relationships with his cast members, who weren't privy to this knowledge, and threatened to damage the show. After discussing things with O'Hare, JMS wrote his character off in a way that would allow him to return when he was better, and publicly gave false reports on why the character was written off. Even after the show ended in 1998, JMS continued to not reveal the secret until O'Hare's death in 2012, in keeping with the man's wishes.
  • The word "secretary" literally means "secret keeper". While most modern day secretaries spend more time doing paperwork and the like, the original meaning is preserved in terms like "Secretary Of Defense", a person privy to a lot of secret military information, who advises the President on such things.


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