This story of the loss and regaining of identity is, I think, the framework of all literature.A character wakes up stranded in the middle of nowhere, with no recollection of who he is. The plot involves, at least in part, his efforts to rediscover the identity he cannot remember. Amnesiac Dissonance may make this unwise. This is a subtrope of Ontological Mystery. See also Loss of Identity. The Amnesiac Lover may want to do this to remember why he or she loved whom they've forgotten. The hero of this kind of story is the Amnesiac Hero.
— Northrop Frye, The Educated Imagination
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Anime and Manga
- In the Yu-Gi-Oh! second series, it's revealed that Yugi's dark side is the reincarnation of a Pharaoh who's lost his memories. The Pharaoh then enters the Battle City Finals to gain the three Egyptian God cards he needs to enter the Millennium World where he can find his identity.
- In Noir, the subplot of who the hell Yuumura Kirika is drives the action for the begining of the series. A subversion, since near the end Kirika doesn't really seem to want to find out about her past, and would rather just make tea for her 'partner'.
- Kaiba: One day a young man wakes up in an empty room, with no idea of who or where he is. His only clues are a strange marking on his stomach, a hole in his chest and a locket containing a blurry picture of a girl. Kaiba travels from planet to planet, seeking for who he is and who the girl in the locket is.
- Durarara!!: This is at least part of the plot, in the case of Celty's motivations.
- Battle Angel Alita: Alita (who was named Gally in the original manga).
- Ergo Proxy: Starting with episode four, the series takes an Ontological turn, changing from a story about a Goth girl detective trying to figure out the connection between the monsters and the corrupt Bureaucracy, to a story about what was apparently a minor character but not really trying to remember his past.
- Eden of the East starts our amnesiac protagonist off in front of the White House with nothing more than a handgun and a cellphone (albeit one with eight billion yen on it) to go by. "Nothing," in this case, includes clothes.
- Angel Beats! begins with Otonashi waking up without any memories. He joins the SSS not because of any particular commitment to Yuri's mission, but in the hope that his memory will eventually return.
- Dangaioh: The four ESP'ers are all suddenly find themselves in service to Dr. Tarsan without knowing who they are/were, or how they got there.
- In Celestial Legend Ceres, Tooya's main motivation for working with the Mikages is to find out who he is.
- XIII starts with the main character washing up on a shore with a bullet wound to the head. When he wakes up he has no idea who he is and no clue, except for "XIII" tattooed on his chest.
- Who Is Donna Troy? is the end of Wonder Girl's quest for identity. Wonder Woman rescued her from a building on fire when she was a baby and took her to the Amazon Island, and grew up without knowing who were her real parents, which was her birth name or anything previous to the fire.
- In Astro City, Beautie has no memories of a time before she flew over a meadow. Periodically she tries to fix this — having difficulty because her Laser-Guided Amnesia keeps erasing what she learned.
- In the 2000 AD story The Dead Man, a young boy finds the burned body of a stranger in the wilderness and takes him back to his village. He can't even remember his name, but he turns out to be damn good with a gun and is being pursued by evil spirits from beyond. After healing sufficiently, the man goes on a journey to find out who he is. He's Judge Dredd.
- In the WWE fanfic, Miss Molly's Wild Ride, Molly Holly gets amnesia after getting trampled by fans during a match that went into the crowd. The only thing she remembers is the face of the last person she saw before she lost consciousness, Jeff Hardy.
- In the FriendshipIsMagic fanfic The Changeling Of The Guard'', this forms the crux of Idol Hooves's journey post-exile, though it takes him a long time to realize it for himself.
- The Bourne Identity (book & movie).
- The lead character of Cowboys and Aliens literally wakes up at the begining of the film stranded in the middle of nowhere, with no recollection of who he is or how he got to his current location.
- Paycheck has a variant: The protagonist knows who he is, but the entire last two years of his life are a total blank. He apparently agreed to have this done by his employer, and would probably have left well enough alone if not for the government wanting to interrogate him about what he was doing during that time.
- This is actually what he does, except he only does it for a max of 3 months due to the original technology used to wipe his memory after every job.
- Dark City: A man wakes up in a bathtub with no memories —- he doesn't even recall that his name is John Murdoch until he checks his wallet. He finds a dead woman in the bedroom, and the phone is ringing. His burning need to know who he is is fundamental to the story.
- The plot of Unknown (2006), where a group of five men find themselves trapped in an Abandoned Warehouse with no memory of who they are. The tricky thing is, they know that at least two of them are kidnap victims and the others are the kidnappers. The movie explores how they slowly regain their memory.
- The Constant Husband
- Memento: This trope is deliberately inverted; the protagonist has anterograde amnesia.
- Jackie Chan in Who Am I?
- Mulholland Dr.: A woman has amnesia after what seems to be a car accident. Recovering herself is not ontologically safe.
- A non-action version is Regarding Henry, starring Harrison Ford. In it, the title character survives a gunshot wound to the head, and the resulting pinched artery affects his memory. Cue the rest of the movie depicting him coming to terms with not remembering anything about his life before the shot. Note that it's a rare ontological mystery for the character only, not the audience, hence the reason that it's played for drama rather than excitement.
- Solaris: All versions of this feature Hari/Rheya undergoing some sort of quest like this. It pretty much jumps from Hari spending most of the film completely amnesiatic, to her feeling a bit angsty over identity issues, to trying to kill herself in about 20 minutes. The 1972 film is 3 hours long.
- The Dead Pit's Final Girl arrives at the mental hospital setting amnesiac and a portion of the plot is donated to find out her identity and her connection to the Big Bad.
- Much of the film RoboCop (1987) revolves around Murphy trying to remember who he was in his past life and getting revenge on the criminals who killed him.
- Captain America: The Winter Soldier: After Steve's "I Know You're in There Somewhere" Fight in the climax helped him to somewhat overcome his brainwashing, the Winter Soldier embarked on a quest to learn about his old self, Bucky Barnes.
- The Chronicles of Amber. Corwin awakes in a mental hospital with zero knowledge of his identity. This is essential to the plot: a core of the first five books is a parallel journey of the reader and Corwin to discover who he is. Corwin's lack of memory is rich narrative fodder: old enemies are dangerously mistaken as friends, but some bitter enemies of old are met without prejudice, allowing for reconciliations, even friendships that would be impossible otherwise.
- The heroine of Tanith Lee's novel The Birthgrave.
- In the Scavenger Trilogy by K.J. Parker, Poldarn awakes facedown in the mud, surrounded by dead soldiers. He has no idea who he is. The remainder of the series has Poldarn striving to reclaim his lost past, yet running from the nightmare his past is revealed to be.
- Dragons Can Only Rust and Dragon Reforged by Chrys Cymri are about a robot dragon on a quest to learn whether or not he has a soul.
- Vorkosigan Saga: Miles Vorkosigan in Mirror Dance, goes through several chapters not knowing who he is, due to amnesia induced by him being killed, frozen, and then revived. His doctors have some idea who he is, but since he has a clone, and they believe the rumor that says he has two clones, they're not sure which one he is.
- The Nameless One from Prophecy Of The Gems by Flavia Bujor.
- Tzigone from Counselors and Kings. She puts things together piecemeal throughout the trilogy, only learning the final bit- her real name- during the climax.
- Subverted in Azure Bonds, in which the heroine awakens in an inn with some, but not all, of her memories missing, only to discover over the course of the novel that her memories are fake, and that she is in fact a rogue magical construct that was only built a few weeks ago.
- This is partially what happens in The Lost Hero, but in the second book it's not really mentioned since the readers already know what happened, even though the character himself does not remember.
- The Redfern Barrett novel Forget Yourself is set in a land where no-one has any clear memories of the outside, and society must be rebuilt from scratch.
- Brandy from the Astral Cafe series goes on various quests for her identity throughout the series, however to date they have all been unsuccessful.
- This is the initial driving question for Aglaciel in Imagine Someday.
- In Those That Wake, Laura goes through one in the second book, and to a lesser extent the first.
Live Action TV
- Nowhere Man: The main character thought he was a photographer whose life had been taken away. Granted, he starts the series thinking he knows who he is and what he does ... "and in one instant, it was all taken away", if I remember the dialogue right.
- John Doe with a twist. The titular character is a walking encyclopedia of the combined knowledge of the human race. The only thing he can't remember is who he is.
- Chester Tate from Soap goes on one of these after he loses his memories in season two after his surgery for his brain defect that had been causing him blackouts and amnesia.
- Doctor Who: The Eighth Doctor had amnesia when he woke up. In this case, the audience already knew everything about him, though.
- Red Dwarf Series 6 opening.
- Star Trek: The Next Generation episodes "Conundrum" and "Transfigurations".
- Coronet Blue.
- Kamen Rider Decade
- Dollhouse: In one episode, Echo and three other Actives awaken in their sleep chambers with their functional but not declarative memories intact. In addition to the usual quest for identity, this also adds an Ontological Mystery into the plot, because the dollhouse would be a very unusual setting for a normal person to wake up in, what with the commercialized mind control and stuff. Naturally, they go hunting for who they are and the people who did this to them. It's all a set-up by the Dollhouse to fix a glitch in the brainwiping process; they learn a little but none of them manage to have their memories restored, and as soon as they accomplish whatever minor goal they were after, they black out as they were preprogrammed to do and are wiped again.
- The Outer Limits (1995):
- In the episode "Blank Slate", a man is being chased by some people. He encounters a woman who agrees to help him. He can't remember who he is but has a strange case with him that periodically dispenses a shot of a blue liquid. With every shot, he regains some of his memories. In the end, he takes the last shot and remembers that those people chasing them are working for him. He is a Mad Scientist who created this method of erasing, storing, and restoring memories. The end of the episode shows him about to do this to the woman who helped him.
- In the episode "Birthright", a politician gets into a car accident and lose his memory. He is immediately told who he is but starts to see strange things. He suspects and alien conspiracy only to find out that he himself is an alien and, in fact, the aliens are already growing a replacement for him.
- The Outer Limits (1963): It was a major feature of the very famous 'Demon With A Glass Hand' episode by Harlan Ellison, featuring Robert Culp. See http://en.wikipedia.org/wiki/Demon_with_a_Glass_Hand for a plot summary.
- The center of Blindspot: A woman is left in a duffel bag in Times Square with no memory of who she is or why her whole body is covered in mysterious tattoos. The tats help the FBI solve cases while the woman, with the temporary identity of Jane Doe, helps them in the hope of finding clues to her past.
- BIONICLE's Takua. After already having had his memory and identity wiped twice, Takua managed to land on his head and erased his identity again. What followed was a long quest to try and piece together who he is, all the while learning of the Legend of Bionicle, and helping his people fight against darkness.
- Cave Story
- Ghost Trick: This is the main character's primary motivation.
- Planescape: Torment: The protagonist can't stay dead, but keeps coming back to life with no memories of anything, even his name. He's called The Nameless One throughout the story, during which he seeks out his lost identity and the reasons for his immortality.
- The adventure games Déjà Vu and Amnesia had the additional twist of the main character being wanted for murder.
- Second Sight with a twist. John Vattic is actually not trying to remember the past but is foreseeing a possible future where the Big Bad has captured and brain-wiped him. The past is actually the present.
- Online game The Adventure of Dave gives Dave no recollection of his past. However, the boss uses this as key evidence for his chaotic good "Heel–Face Turn."
- The Lost game Via Domus.
- Dissidia: Final Fantasy has an aversion, in which the Warrior of Light doesn't know who he is or where he comes from. It does seem to bother him from time to time, but he's never shown actively doing anything to try and get his memories back. While it's revealed to the player in Dissidia 012 that he has no past due to being born a Manikin infused with memories, he never learns this himself.
- Pokémon Mystery Dungeon. The sequel has a much different answer than the first...
- Too many Interactive Fiction games to count.
- The Elder Scrolls III: Morrowind starts with you as an unknown stranger, born in a certain day from unknown parents. There is no recollection of the past, but that's fine, because the Dunmer believe this is one of the traits of The Nerevarine.
- Flashback, which has the trope name in the subtitle. The whole identity plot ends at the beginning of level 2, though.
- The Neverhood. The protagonist's back story is revealed through the Plot Coupons scattered throughout the game. Namely that he doesn't have one: he was literally made in the room he woke up in.
- Phoenix Wright: Ace Attorney: Happens (temporarily) to Phoenix in the second game to justify a tutorial level.
- In the original video game adaption of Shadowrun, the hero is shot and 'killed' by men working for his disgruntled boss, Drake. He's saved by a shaman and reawakens in the morgue, sans memory.
- Shadow The Hedgehog has been doing this since Sonic Adventure 2. In his first appearance, he had part of his memory, but by Sonic Heroes, he had lost all of his memory, taking him on a quest for his identity that would come to a head in this game.
- The Kid in Ever17.
- Many players on MU* s create characters of this sort, often because they save the player the trouble of having to do the real work of assembling a character, leading some MU* s forbid characters of this sort out right.
"Your character's past might be mysterious, but you and the staff should still damn well know what that "mysterious past" is."
- Those that haven't forbidden it have put it on the "Overdone" list, which generally includes concepts that a player will have to be very convincing - and probably have to hand in essay-length bios - to justify them getting such a character. To quote (or at least paraphrase; it's been a while) a review of one such (incredibly terrible) app:
- Geneforge 5: The player character suffered the backlash of With Great Power Comes Great Insanity and for several years had mental functionality like that of a rather clever sheepdog. The game starts with you returning to sentience with almost no memories. Throughout the game you meet several people who seem to recognize you, and ultimately you never find out and just decide to make a new life for yourself.
- [PROTOTYPE] involves the player character, Alex Mercer, attempting to remember who he is and who caused the Manhattan Zombie Apocalypse. He does this by eating people. And y'know who caused the outbreak? Alex Mercer, and the character we're playing isn't the real Alex, just a viral mutant who ate the original and thought it was him.
- the white chamber. The main character awakens in a strange coffin in a small room, with no idea who she is and how she got there. She's on an abandoned space station — abandoned because she murdered everyone else on board.
- The Witcher. There's even a quest called "Identity". Some thought it not yet witchy enough. Others found it somewhat witchier than they expected.
- Amnesia: The Dark Descent has this as the overarching plotline.
- Both Knights of the Old Republic games twist this around in complicated ways.
- More simple is Knights of the Old Republic II: you wake up in an abandoned mining facility, and the first act is all about finding out how the hell you got there. So the first part revolves around finding out what happened, but it's because The Exile was unconscious, not because she forgot. The rest of the game actually averts this trope: The Exile knows and hints at who she is and it is the player who must figure it out.
- Knights of the Old Republic twists it around in a spoilerriffic way. Basically, this sort of applies to one character, but they don't know it. As in, they don't know that there are vital things about their past they don't remember and that are part of what they're trying to find out, until The Reveal.
- Agarest Senki 2 has this as an overarching plot line where the first generation protagonist must find out who he really is before his amnesia.
- Your motivation for most of the game in BioForge. It doesn't eventually impact much when you find it out.
- Rion, main character of Galerians, begins the game Strapped to an Operating Table with no idea who he is. But since he has Psychic Powers, he has the means and the will to figure it out.
- The Talos Principle allows the player character, a robot dropped off in the middle of a mysterious island, to optionally go on a quest to find out its identity and purpose as it solves the various puzzles the world presents, or alternatively ignore this burning question and do as the AI calling itself Elohim tells it to.
- This is Grey's entire reason for going through the events of Mega Man ZX Advent, all in the name of trying to find the truth of his existence from the Big Bad, Master Albert. However, after fighting Maverick Mechaniloids, Pseudoroids, five other Mega Men, and both Prometheus and Pandora, he starts to matures and decides that doesn't matter anymore, and when he finally learns that he's actually Master Albert's failed backup body and Model A is a recording of Albert's powers and memories, he essentially tells Albert he doesn't give a damn about that and he'll make his own destiny. The fact that one of the Mega Men he fought beforehand was Aile certainly helped him get over it better, and at the end of the game he goes off on another Quest for Identity, this time Walking the Earth to find his own place alongside Model A.
- Kingdom Hearts: Roxas was sick of being in the dark, realizing just how little he really knew of himself. So he ditched Organization XIII to find out who he was before becoming a Nobody, or even if he WAS someone before that. At least, that was the idea; Di Z had other plans for him.
- This is ultimately why Red XIII Face Heel Turned in Ansem Retort; to find out more about himself, his race (of which he's the Last of His Kind), and how the fuck humans managed to get superior over them anyway.
- The inhabitants of The Ends are reborn without memories in an endless cycle. The protagonist, Jason, has managed to recover a portion of his identity and is now questing for the remainder.
- Subverted in Hanna Is Not a Boy's Name — the narrator, a zombie, woke up ten years ago with no memory of his past life or even his name. Instead of going on a Quest for Identity, however, he spent those years wandering and contemplating life, and has joined Hanna in his supernatural investigations for something to do rather than finding out why he's come back to life. He has shown relatively little interest in his past identity and has even stated in the artist's Q&A that if he remembered the identities and address of his family, he probably wouldn't go see them - it would be too cruel to them.
- Iris Brockman in Tales Of Gnosis College averts this trope. In spite a a bizarre sequence of events involving total physical discontinuity with her past self, she has no doubts as to who she is.