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Amnesia Episode

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Amnesia is in a unique position to provide drama for any sort of serial. It's scary to think that one's memories could suddenly be taken away, it can be used to take someone out of the action for a while, or it can be Played for Laughs, in which case, it will play off of Mistaken Identity. This is when an entire episode or story arc's plot revolves around a character getting amnesia.

Generally goes hand in hand with Easy Amnesia and sometimes Identity Amnesia. Not to be confused with Aesop Amnesia.


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    Anime & Manga 
  • In Episode 26 of Doki Doki! PreCurenote , Ira suffers amnesia, and is temporarily left in the care of Rikka.
  • Gintama has an Amnesia arc dedicated to Gintoki having lost his memory after a traffic accident.
  • The One Piece anime has the filler arc "Ocean's Dream" (loosely based on the video game of the same name), in which a seahorse steals all the memories of the protagonists (with the exception of Nico Robin) since they joined the Straw Hat crew causing them to turn back to their original characterizations. At the end, Luffy defeats the seahorse and all returns to normal.
  • The seventh episode of Ōkami-san has Ryoko fall into a pond while rescuing a cat from a tree, and getting amnesia from a head injury, resulting in her mentally reverting to her 13 year old self.
  • Pokémon: The Series: This happens to Pikachu in the episode "A Scare to Remember" after it gets hit in the head which makes it lose its memory as a result. This even happens after another encounter with Team Rocket, which makes Ash lose Pikachu.
  • In episode 129 of Tamagotchi, Himespetchi develops amnesia after falling down some stairs. She at least remembers that she was in love with someone (that someone being Mametchi, the main character of the show), but she doesn't remember who exactly her crush was, leading her to develop a crush on Prince Tamahiko for the first half of the episode... and then Prince Tamahiko himself forgets he's in love with Princess Tamako and develops feelings for Himespetchi.
  • A two-chapter story of Ayakashi Triangle has Matsuri put under hypnosis that makes him lose all his personal memories and believes he was always a girl, rather than previously being a boy. This causes Matsuri to reciprocate Soga's crush on him, but Soga is so put off by Matsuri's personality change that he doesn't feel any regret as he helps break the spell.
  • One episode of Gokujo had Aya slip on a banana peel and subsequently suffer from amnesia. In spite of the new Aya being a polite and modest Nice Girl, her friends still try to restore the original Aya.
  • An unusual case occurs in Yu-Gi-Oh! 5Ds when Yusei first meets Leo and Luna, briefly living with the twins until his memory returns... but this is only in the dub, as his memory was perfectly intact in the original version.

    Audio Play 
  • Kankinkon includes a situation in which the viewpoint character, Touji Saijou's wife, loses all of her memories prior to meeting him. The thing is, this turns out to be an Ironic Hell for Touji, since his wife is completely affectionate with him now that she's forgotten how he stalked her, raped her, and tricked her family into letting him marry her and she's only seen his better sides during this escapade. So he can't fully enjoy the loving relationship he wants with her, but he can't unlock her memories or she'll despise him again.

    Comic Strips 
  • In Garfield, a February 1987 arc has Garfield developing amnesia after he falls off the kitchen table. After a few jokes about him acting Out of Character (refusing to eat lasagna and not caring about Pooky), he is taken to the vet's office. Jon lightly taps Garfield on the head, regaining his memory. In retaliation, Garfield hits Jon on the head hard, causing Jon to lose his memory.

    Fan Works 

    Films — Animation 
  • In Steven Universe: The Movie, Pearl, Garnet and Amethyst get hit by a Rejuvenator that resets them to their default setting, losing all of their Character Development from the series. The entire second act of the movie is about Steven trying to restore their memories.

  • Animorphs: Rachel's subplot in the first Megamorphs book starts when she gets mobbed by jays as a bald eagle, crashes into a tree, and suffers a concussion. She instinctively morphs, which heals the concussion, but still leaves her with memory loss. She wanders the woods all day and night, morphing whenever she feels threatened, but not knowing how or why she can do it.
  • The Magic Kingdom of Landover series has this as the central plot of The Tangle Box, where King Ben, evil sorceress Nightshade, and dragon Strabo are all trapped in the titular box and stripped of their memories. Made awkward because Amnesia-Ben and Amnesia-Nightshade start to fall in love when they are normally very bitter enemies.
  • In one of the Treehouse books, Andy and Terry get their memories sucked out of them, so Jill has to re-educate them.

    Live-Action TV 
  • 3rd Rock from the Sun: This is Harry's subplot in the episode "Proud Dick." The rest of the family doesn't even notice the change because Harry is just that stupid normally. He then discovers that the other members of his family are aliens and freaks out, not realizing that he's an alien as well.
  • The Addams Family has the aptly named episode "Amnesia in the Addams Family", in which this happens to Gomez after he gets hit on the head with a club.
  • Batman. In almost every episode centering on the supervillain King Tut ("The Curse of Tut"/"The Pharaoh's in a Rut", "The Spell of Tut"/"Tut's Case is Shut", "King Tut's Coup"/"Batman's Waterloo", "The Unkindest Tut of All"), the Egyptologist Professor William McElroy is hit on the head and forgets who he really is, thinking he's the historical King Tut instead. At the end of the episode he's hit on the head again and reverts to his standard personality.
  • The Buffy the Vampire Slayer episode "Tabula Rasa" features the Scoobies all getting mass amnesia as a result of a fireplace igniting a whole Willow's Lethe's bramble, accidentally enhancing a Laser-Guided Amnesia spell she crafted to help Buffy forget her time in Heaven.
  • In the Charlie's Angels episode "Angel on My Mind," the villain hits Kris with his car after she sees him committing a murder. She spends the rest of the episode wandering down the beach, talking to various people and at one point beating up three muggers, while the others try to track her down.
  • In The Dick Van Dyke Show episode "Who and Where Was Antonio Stradivarius?" Rob gets a concussion and ends up wandering the town. In an unusual twist, the next morning, he wakes up with no memory of the night before, but remembers who he is.
  • Doctor Who: In "Human Nature"/"The Family of Blood", the Doctor voluntarily gives himself amnesia to escape some aliens who are basically psychic bloodhounds. His companion, Martha, has to try and manage the amnesiac Doctor so he doesn't get into trouble until it is safe to put his memories back. Things get complicated when the aliens turn up anyway and the Doctor loses the MacGuffin that contains his memories.
  • Forever Knight. In "Night in Question", a head injury makes Nick forget he's a vampire. He eats regular food for a while and Natalie is hopeful of curing him permanently, but when he goes out in the sun it still burns, so she has to tell him the truth.
  • Full House ends on one of these. Michelle falls off a horse and gets Easy Amnesia, so the episode revolves around trying to get her memory back.
  • Get Smart. In "Where-What-How-Who Am I?", Maxwell Smart overhears the Evil Plan of some KAOS agents, but a doctor in their employ gives him amnesia pills that make him lose his memory.
  • Gilligan's Island:
    • In the 1st season episode "Forget Me Not", the Skipper gets amnesia when a pole hits his head. When the Professor tries to cure him with hypnosis, he first reverts him to childhood and then makes him think it's still World War II.
    • In the 3rd season episode "The Second Ginger Grant", Mary Ann is hit on the head and loses her memory, thinking that she's actually Ginger Grant. When the Professor tries to snap her out of it with hypnosis, Gilligan ends up hypnotized into thinking he's Mary Ann. Obviously Played for Laughs.
  • An episode of Hannah Montana had Miley's obnoxious brother Jackson get amnesia. Miley takes advantage of this in order to make Jackson more bearable, but she soon realizes that she actually liked Jackson for his doucheiness. In the end, it's revealed that Jackson faked his amnesia in order to hear Miley admit that she prefers him as a jerk. Even her own father was in on the prank.
  • Downplayed by The Hogan Family. Sandy suffers a head injury in an accident, but develops short-term memory loss instead of full-blown amnesia. note  Despite this, she still manages to complicate a job interview for David. She recovers by the end of the episode.
  • One episode of Insecurity had JoJo get hit by a car while undercover as a drug dealer's girlfriend, and her boyfriend "helpfully" filled her in on who she was, resulting in her becoming convinced she was her undercover persona.
  • Jack of All Trades: "Hamnesia" has Emilia left amnesiac after taking a blow to the head. Jack promptly convinces her that she's an uninhibited party animal.
  • The Australian children's show Johnson and Friends had an episode called "Diesel Who", where Diesel the monster truck accidentally collides with a wall after trying to run over McDuff the concertina. The collision is hard enough that it leaves Diesel unable to remember who he is, or who his friends are, for the rest of the episode.
  • In the Laverne & Shirley episode "Playing the Roxy", Shirley gets amnesia as the result of a Staircase Tumble and thinks she's a stripper named Roxy.
  • In the LazyTown episode "Sportacus Who?", Robbie Rotten gives Sportacus amnesia and so the kids try to help him remember.
  • In the Lost Girl episode "Fae-nted Love", Bo is left amnesiac after being splashed with some magically tainted water.
  • In an episode of Married... with Children, Peg has an accident, as a result of her poor housekeeping ethic, bumps her head and doesn't remember who she is. When Al comes home, he takes the opportunity to trick her into leaving and not coming back, only for Bud to tell Al that they can give her a new identity. Al then convinces an amnesiac Peg that she is the perfect housewife, and dotes on Al 23 hours a day, and Bud for one hour, Al having convinced her that she doesn't need sleep. Seeing Peg slaving away on his whim, turns on Al so much, that he convinces her to have sex. While they are in the middle, she comes to her senses, after holding a broom, an punishes Al for what he did by forcing him to have sex again.
  • Miami Vice had a four-part story arc in which Crockett gets amnesia and thinks he's the drug dealer Burnett. Before he gets his memory back, he takes over a cartel, kills a Dirty Cop and a number of drug dealers, and tries to kill Tubbs twice.
  • The Monk episode Mr. Monk Bumps His Head, Monk bumps his head (well, is hit in the head) and forgets his identity. While his friends are trying to find him, he ends up solving another murder where he wakes up.
  • The Professionals. In "Blackout", a German woman dressed only in bra and panties (to our heroes' appreciation) staggers into a Sunday church service and collapses. The only thing she remembers is the words "Harrowdene" and "Monday"—the place and day a deposed African head-of-state is due to arrive in the country. CI5 are in a Race Against the Clock to get more details from her, fearing (correctly) that an assassination is planned.
  • Quantum Leap: leaping gives you gaps in your memory referred to in-show as the "Swiss cheese effect". Played straightest in the pilot episode, where Sam initially can't remember his own surname, what he does for a living, or his childhood address or phone number. In later episodes he forgets that he's a good piano player, his brother's death, and the existence of his wife. He never does remember where he learned to do a roundhouse kick.
  • Sesame Street has an episode where Big Bird gets a condition called the "Memory Flu". It is not the slightest bit like influenza, and is basically amnesia. Maria states that it is called "Memory Flu" because "his memory flew away". After a few attempts at reminding him, he eventually gets his memory back.
  • The Shake it Up Grand Finale "Remember Me" has Cece have a tumbling accident at a fashion show and forget her memories with Rocky in the process.
  • Stargate SG-1 episode "Memento Mori" has team member Vala getting amnesia and lost in somewhere in America believing herself to be an ordinary human woman and disbelieving in aliens after she was kidnapped and hooked up to a Mind Probe. Exactly why she defaulted to that state, being a Human Alien, is left unexplained.
  • Stargate Atlantis: In "Tabula Rasa", the entire population of the city, save for Pegasus Galaxy natives Teyla and Ronon, wind up with amnesia, of the "constantly forgetting things" variety. On top of this, the episode begins In Medias Res, so it's not clear for some time what's going on.
  • Starsky & Hutch: In "Partners", Hutch develops amnesia after a car accident, allowing for a Clip Show as Starsky tries to jog his memory. In the end he admits he was faking it.
  • Star Trek: Enterprise:
    • In "Twilight", Archer gets amnesia from parasites in his brain and it's fixed through Time Travel.
    • In "Stratagem", Degra the alien scientist has his memory wiped.
  • Star Trek: The Next Generation:
    • "Conundrum": The entire crew is given amnesia by an alien posing as the first officer.
    • "Thine Own Self": A malfunction causes android Date to lose his memory. He happens to be on a planet of aliens who think he's an "ice man".
  • In the Star Trek: The Original Series episode "The Paradise Syndrome", Kirk gets amnesia while among some pre-warp aliens.
  • In the Season 12 Supernatural episode "Regarding Dean", Dean slowly loses his memory after a witch the Winchester brothers are hunting casts a spell on him. This is Played for Laughs at first but gradually becomes more serious with the progression of the memory loss as the reality of Dean forgetting everything about his loved ones and his concept of himself sets in.
  • Touched by an Angel: In "Seek and Ye Shall Find", Monica gets amnesia after slipping on ice and taking a nasty blow to the head.
  • The Twilight Zone (1959). In the very first episode, "Where is Everybody?", a man finds himself walking along a road with no idea who he is. The episode shows him discovering and exploring a deserted town, trying to find out his true identity and what's going on.
  • One episode of Ultraman Max was "Who Am I?", in which alien cat monsters that cause memory loss with their presence at DASH's base. This leads to some extreme hijinks as everyone at DASH (except Elly) is unable to remember how to even perform the simplest actions, including Ultraman Max being unable to remember how to use any of his powers.
  • Walker, Texas Ranger:
    • Season 4's "Blackout", has the titular Ranger suffering this, and just before the New Year can be rung in.
    • Season 8's "Full Recovery" has the younger brother of an employee at a genetics lab going on the run from laboratory officials after his brother was murdered after uncovering their plot to spread sarin, a deadly nerve gas, across the country.

     Puppet Shows 
  • Fraggle Rock: In the episode "Boober Gorg", Boober gets amnesia when a radish explodes in his face (It Makes Sense in Context) and is led to believe he is Junior Gorg, a different character from the show.

    Video Games 
  • After Kefka creates the World of Ruin in Final Fantasy VI, Celes and Sabin come upon Edgar who's apparently lost his memory and now operating as the leader of a gang of thieves. Their next mission is to break into Castle Figaro which is now buried and rob the place. It turns out he was faking amnesia so he could get the thieves to get him back into the castle.
  • During the Dydroit belt arc of Granblue Fantasy, the Primal Beast Kikuri severs the fated connections of nearly everyone on the Dydroit Belt, including most of the crew (save for the Protagonist, Lyria, Vyrn and Rosetta), causing everyone to forget about their close friends and acquaintances. Fights begin to break out over the confusion caused by the lost memories, while the same confusion causes most of the affected crew to wander off on their own. Eventually, the missing crew members are rounded up and Kikuri is suppressed, restoring all the lost memories.
  • Kingdom Hearts: Chain of Memories is this for the Kingdom Hearts series. Sora's party arrives at Castle Oblivion, a labyrinthine castle which is stated to have power over memories. With every floor he ascends, memories of his previous adventures fade while repressed "true" memories bubble up to the surface. It is later revealed that Sora's memories are actually being manipulated in a bid to control him, and the only way to restore his memories to normal would involve forgetting the events of the game altogether. So he does.
    • The convenience of the ending twist led some fans to believe that the game was intended to be a non-canonical side game that wouldn't be necessary to understand future games. Cue every subsequent entry in the series making reference to the events of this game.
  • Minecraft: Story Mode: Episode 4: "A Block and a Hard Place". Whoever you didn't save in Episode 1, whether it be Gabriel or Petra, will return at the end of Episode 3, having a severe case of amnesia from being inside of the Witherstorm. Their appearance in Episode 4 is mostly Played for Laughs. When the Witherstorm is defeated, whoever had amnesia will have their memories restored.
  • The first case in Phoenix Wright: Ace Attorney – Justice For All has Phoenix being clobbered on the head with a fire extinguisher by the culprit of a murder case so that Phoenix can't do his job in defending his client. Phoenix spends the whole case groggily going through the trial with no memory to who he is or what his profession is, which has his client trying her best in helping him remember. This is done as an excuse to give the player a tutorial to the game's mechanics since Phoenix is already an established lawyer and technically wouldn't need a refresher on the basics.

    Western Animation 
  • An episode of American Dad! had Stan get amnesia and Francine uses the opportunity to make Stan into her version of 'the perfect husband' as she saw Stan's old personality has insufferable (which to be fair, he really was).
  • In the Back at the Barnyard episode "A Tale of Two Snottys", Eugene, aka Snotty Boy, gets knocked unconscious so they dress Pig up as Snotty Boy. When Snotty Boy awakens, he has amnesia.
  • Batman: The Animated Series: In "The Forgotten", Bruce Wayne suffers amnesia while undercover investigating a series of disappearances. As soon as he remembers who he is, he immediately breaks out of the box where the villain of the week was keeping him and takes down the slavery ring.
  • The Brothers Flub has the episode "Thanks for the Memories", where Fraz loses his memory by exposing himself to a strange gas, forcing Guapo to get out a photo album and show Fraz the pictures in it to revive his memory.
  • Code Lyoko had an episode involving one of the main characters getting amnesia, which eventually spreads to the rest of the school. The amnesia is the result of nanomachines being taken over by XANA. The episode is aptly named "Amnesia".
  • Courage the Cowardly Dog had "Dr. LeQuack, Amnesia Specialist". Muriel develops amnesia after being bonked on the head by a plank Eustace was nailing and Courage tries to seek help from someone who can cure her. The titular villain LeQuack, who turned out to be a wanted Con Artist the authorities were looking for, is called in for the job, and needless to say, Courage realizes what a terrible mistake he made hiring him when he sees him bonk Eustace in the head and lock him in the closet. After LeQuack is arrested after unwittingly giving Muriel her memory back, Eustace begins to develop amnesia himself after LeQuack bonked him earlier.
  • Danger Mouse: "Public Enemy No. 1" has our hero with amnesia after a bump to the head while tracking down Baron Greenback. The Baron convinces DM that he's a daring Robin Hood-type outlaw called the White Shadow. Penfold is assigned the task of bringing DM to justice (which, naturally fails, leading Penfold to try to rouse DM back to normal).
  • Dastardly and Muttley in Their Flying Machines had an episode in which Dick Dastardly loses his memory after falling out of his plane and landing on his head. Klunk takes command of the Vulture Squadron as he and Zilly try to restore Dastardly's memory.
  • DuckTales (2017): "The Ballad of Duke Baloney" is about Flintheart Glomgold losing his memories after an accident, and starting a new life as a humble fisherman named Duke Baloney. He's actually a lot happier without his grudge against Scrooge, but by the end of the episode his memories get restored.
  • Family Guy does this in the episode "Big Man on Hippocampus" where Peter gets amnesia and reverts back to living his bachelor lifestyle. Lois spends the episode trying to jog his memory but it seems she fails and Quagmire starts hitting on her. And that is when Peter reveals he got his memory back not long after losing it and was just faking most of it because he enjoyed the opportunity to relive his single days.
  • Garfield and Friends: "Forget Me Not" is a rough adaptation of the amnesia arc from the comics. In this version, the vet scenes are Adapted Out, Garfield tries to steal a pie from a windowsill, and loses his memory from getting hit by the pie tin. At the end, he regains his memory after being hit by a pan of lasagna.
  • Gasp!: In "Amnesia", the pets must teach Gasp how to be himself again when a bump on the head gives him a case of amnesia.
  • Inside Job (2021): In "The Brettfast Club", Magic Myc gets amnesia after falling out of a plane. He immediately starts mooching off some kids who take him in; he eventually gets his memories back when they get fed up with his dickishness and chuck him off a cliff, where he lands headfirst onto the gang's car.
  • In the Jane and the Dragon episode "Dragonphobia", Jane eats poisonous (to humans) berries and falls unconscious. She wakes up with amnesia from either the fall or the poisoning (it's never revealed) and thinks she's afraid of dragons.
  • Les Sisters: In "Amnesique et Perils", Marine seemingly gets amnesia and Wendy has to work to restore her memories by performing activities she likes. Marine is actually faking it; she accidentally broke Wendy's phone and has to pretend she doesn't know what happened to it.
  • Lilo & Stitch: The Series; the titular experiment from "Amnesio" can wipe the minds of those that look into his eyes. He does this to Lilo, Stitch, and Gantu when they try to catch him, leading Stitch to revert to his old ways and start terrorizing the island while Lilo guesses Gantu's a space cop trying to apprehend him.
  • In Merry Madagascar, Santa Claus gets amnesia and so the protagonists have to help him get his memory back.
  • Miraculous Ladybug: In "Oblivio", Ladybug and Cat Noir wake up in an elevator, unable to recall who they are or how they got there. They end up detransforming in front of each other, but it doesn't matter since they don't know who they are anyhow. They end up using contextual clues to deduce that they are superheroes who had their memories wiped by a supervillain, and incorrectly conclude that they are also a couple, while in reality it is more of a UST situation. Throughout the episode, they bond and end up falling back in love. After managing to defeat the supervillain, they kiss, but immediately forget about it after Ladybug uses her power to revert everything back to normal. But not before Alya managed to take a picture and post it on the internet.
  • The Owl House episode "Understanding Willow" has Amity accidentally burn a bunch of photos connected to Willow's memories, necessitating her and Luz to have to travel into Willow's mind to fix the damage.
  • The Pet Alien episode "They Took Tommy's Brain" has Tommy getting amnesia after Gumpers kicks him in the head with a soccer ball and being unable to remember any of the aliens. Dinko tries to jog Tommy's memory, Gumpers takes the opportunity to screw with Tommy, and Swanky steals Tommy's bed for himself.
  • The Popeye cartoon "I Yam Wot I Yamnesia" takes this to ludicrous extremes. When Popeye and Swee' Pea bump heads with each other, they don't lose their memories. They exchange personalities and voices, which Wimpy diagnoses as amnesia. In attempting to cure them with another whack to the head, Wimpy accidentally konks Olive and then himself, causing those two to exchange personalities and voices.
  • A Pup Named Scooby-Doo had this happen to Shaggy in "The Return of Commander Cool," when he's cosplaying as his favorite superhero, the titular Commander Cool, but after getting into a roller-rocket-ski accident Shaggy comes down with amnesia, sees his reflection in the mirror and thinks he really is Commander Cool for the majority of the episode.
  • The Rugrats episode "Regarding Stuie" has Stu mentally regressed to infanthood after hitting his head in a fall.
  • Marge Simpson gets amnesia in The Simpsons episode "Regarding Margie".
  • Sitting Ducks averts the trope in "Born to be Wild" when Waddle gains the mind of a primal duck after crashing someone’s scooter, which wears off when he flies onto a billboard.
  • SpongeBob SquarePants
  • In Star vs. the Forces of Evil, people who enter the Realm of Magic quickly start to lose their memories. This comes up three times ("Deep Dive" and the two-part season finale "Divide"/"Conquer" in season 3, and "Mama Star" in season 4), with each time requiring outside intervention to get the characters out of the realm and into Mewni where their memories can return. The Grand Finale "Cleaved" requires them to go back yet again, with a much weirder way of escaping the amnesia.
  • Underdog had Simon Bar Sinister's titular amnesia-inducing net known as "The Forget-Me-Net", wherein the victim feels its effects when it is dropped on them. However, the victim's memory returns once they hear their name. After using it to get Underdog and Sweet Polly out of his way, at which point the former was dressed up like a woman so nobody could recognize him, Simon later planned to drop a huge Forget-Me-Net on Washington, D.C., but Underdog and Polly regained their memories in time, to which the plan was foiled, to which Simon and Cad fell victim to the net themselves.
  • The Vampirina episode "Memor-eek" is about Gregoria using a memory spell so Edgar will temporarily forget about monsters while she gets some alone time, but it backfires, and both Edgar and Poppy forget meeting Vee.
  • Wubbzy gets a similar vain to SpongeBob in the Wow! Wow! Wubbzy! Made-for-TV Movie "Wubbzy's Big Movie," where he also hits his head on a rock and gets "knockity-noggin" (what the show refers to as amnesia).
  • In the Mia and Me episode "The Cave of Truth", Mia hits her head on a tree branch and gets amnesia.
  • In the Young Justice (2010) episode "Bereft," a psychic named Psimon erases the memories of the Team to keep them from discovering his experiments. For most of the team this is downplayed since they only lost six months of memories, meaning they forgot they were a team and even each other. For Superboy, who is is a clone created within that time frame, he is left as a feral animal attacking out in confusion. Thankfully the team had fragments of their old memories within them, which Miss Martain used to help them remember their current mission.


Video Example(s):



Ladybug and Cat Noir have lost their memory and a mysterious villain is prowling around Paris. Will our amnesiac heroes manage to defeat Oblivio and turn him into just a bad memory?

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Example of:

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