A character, usually a Hero, sometimes an Anti-Villain or Anti-Hero, has done something that led to terrible consequences. Often they have had the best of intentions, but due to inexperience, lack of foresight, or something else, the results were the opposite of what they wanted and intended.
It is the thing that happens next that defines Must Make Amends: the character will do everything in their power to undo the thing they've done or caused. It might have been the death of a loved one, helping a tyrant to power, or something else. If they succeed and receive gratitude, Think Nothing of It is likely to follow; gratitude only reminds them of what they did to cause the problem.
Compare The Atoner, who is usually making up for a whole set of bad deeds following a HeelFace Turn or Kick the Morality Pet, whereas Must Make Amends is usually about a specific bad deed that can come from any type of tragic mistake. My God, What Have I Done? is typically the lead-in to this situation, with Redemption Quest being a sister trope. If making amends involves Time Travel, this becomes Set Right What Once Went Wrong. Contrast Buy Them Off and I Regret Nothing.
- In the rogue zanpakuto filler arc of Bleach, Ichigo is tricked into breaking Yamamoto-Genryusai's barrier, allowing Muramasa to find out the location of his master, Kouga. Ichigo, upon learning his mistake, determines that he must go stop Muramasa so that he can fix his mistake.
- The events of Fullmetal Alchemist all get their start when Ed and Al try to bring their dead mother back to life and pay a terrible price for trying. Then they begin their quest to find the philosopher's stone, set things right and get their bodies back, not knowing that the philosopher's stone is souls of human beings.
- More specifically, this is Ed's way of thinking. Al wants things to be alright again, and he knows they did wrong, but Ed has a whole The Atoner mindset and his primary goal is always to fix Al, whose predicament he feels is his fault. Some of this of course is Big Brother Instinct at work.
- Roy Mustang is even more The Atoner, and his entire life revolves around achieving enough power to fully make amends for his participation in the massacre at Ishval.
- Scar has a bit of this with his survivor's guilt.
- Hohenheim is also like this about his role in the destruction of Xerxes and the birth of the Big Bad. Also survivor's guilt and I Am a Monster. (this is his Catch-Phrase for a while.) This is why he left the family — he had to deal with his eldest son.
- Izumi possesses shades of this vis-a-vis her miscarriage and subsequent attempt at human transmutation. Arakawa likes this trope.
- There's also the fact that, in the 2003 anime version, their attempt to bring Mom back created the homunculus Sloth.
- What Nina Einstein tries to do in Code Geass R2, after the bomb she built under Schneizel's orders completely obliterates a good part of Tokyo.
- In Higurashi: When They Cry when Shion Sonozaki kills Satoko Hojo in the underground torture chamber, she believes at first that she's helping her essentially dead boyfriend Satoshi Hojo. Then she tries to talk to his shadow that has appeared on the wall (she's gone nuts at this point), when she realizes the last words of him were: Take care of my little sister [Satako] for me. She literally pisses in her pants at the realization, but realizes she's already crossed the Moral Event Horizon and goes off to brutally murder more people.
- This particular example is played straight in a later arc however, when Shion and Satoko are shown to be much closer, with Shion acting as Satoko's surrogate big sister. Shion at one point says that she remembered the above mentioned brutal murders (but dismissed them as nightmares) and it's implied she's subconsciously trying to make up for it.
- Ken Ichijoji, in Digimon Adventure 02, after discovering that the Digital world is not just an artificial construct in which he can play out his anger and issues concerning his brother's death. This method essentially turns him from the Big Bad to The Woobie.
- In the first 02 movie, Willis had one of his Digimon go rogue; he had been chasing the corrupted Kokomon (now a Wendigomon) all over the US in an attempt to fix it. Even after the rest of the main kids show up, he is initially insistent that because it is his Digimon, he needs to make it right, himself.
- Beelzemon of Digimon Tamers takes the cake, though. Since it's his fault Jeri's trapped by D-Reaper because it likes feeding off the despair she has for her dead partner, who he killed, he practically went insane trying to set things right, screaming "I'll save you if it's the last thing I do!"...and it almost was.
- To elaborate on this: he's trying to break her out of an energy bubble, and gets it open. She freaks out because it's the guy who killed her partner, increasing his guilt. By the time she snaps out of it, the hole is closed and he starts trying to punch it open. He's so focused on saving her that he's shot in the back by about six razor disks in a truly disturbing was-this-really-for-kids scene and plummets to the sea of deletion goo below, trailing data in lieu of blood. And only got saved at the last possible second. And nearly died of his injuries afterwards. Good God.
- In the Trigun manga, part of The Reveal in the flashback arc is that Rem was complicit in the testing to destruction of Tesla, the girl born from the bulbs before Vash and Knives were. Her mothering of the twins is an attempt to make amends for not doing anything to save Tesla. When they are found out by another researcher, he turns out to feel the same way.
- Of course, Knives does not much care about that part, concludes with justification that Humans Are Bastards, goes Ax-Crazy and makes a good shot at a Kill All Humans plan. And Vash spends the next several decades feeling he has to make amends for that, somehow, until Knives uses him to blow up a fucking city, and then he feels the need to make up for that. Then Knives does it again, although Vash managed to evacuate that one first.
- A major villain successfully pulls this off as the punch line to one of Naruto's more spectacular Wham Arcs.
- In Tsukigasa, Azuma feels incredibly guilty about cutting off Kuroe's arm, but doesn't know how to make amends. Eventually he gives Kuroe a blade and tells him to do whatever he likes to even the score but it's only when they finally are completely honest about everything that it gets resolved and Azuma can let go of some of the guilt.
- In World Embryo, this is become Riku's motive, recently. His habit of lying had made many victims, including his friends and loved ones, and he intends to repair that.
- In Fairy Tail, Loke, really the Celestial Spirit Leo, was banished from the Spirit World after indirectly, inadvertently causing the death of his abusive Celestial wizard. He spent three years blaming himself for it, convinced that the only way to atone for it was to wait for his life force to drain so that he could die, too. Luckily, Lucy manages to save him, and Loke decides to make amends by serving and protecting her.
- Jellall and later Ultear do this by forming a secret crime-fighting guild to make up for their past transgressions.
- This is Hime Shirayuki/Cure Princess' story in Happiness Charge Pretty Cure as she accidentally opened up the Axia Box, releasing the Phantom Empire, who is now causing havoc across the planet. However, despite her drive, she's... pretty pathetic.
- Dragon Ball Z: This is Vegeta's primary reason for choosing to fight Majin Buu alone, partly because he was responsible for Majin Buu being revived in the first place and Gohan apparently being killed by the monster, and partly because he wants to make amends for Goku dying during the Cell Games since, in letting Cell absorb 18 and become Perfect because of his own Pride, it was his fault the entire mess with Cell got so bad.
- Dragon Ball Super: After he discovers how evil Zamasu is, as well as the fact that he's participating in a genocide of all mortals in Future Trunks' timeline, Gowasu decides to go to the future to help stop said genocide, since he was the one who chose Zamasu as his apprentice and eventual successor in the first place.
- Mobile Suit Gundam: Iron-Blooded Orphans mocks this trope in the second season. Iok Kujan's actions cause a Mobile Armor — a massive, powerful Killer Robot — to be re-activated, and his subordinates sacrifice themselves to ensure his survival. When Julietta Juris finds Iok, he's become convinced that he has to destroy the Mobile Armor personally or else he won't be able to face his men in the afterlife (Julietta's reaction is stunned disbelief). Not only is this stupid (because his weapons can't even scratch the Mobile Armor's paint) and not only does it risk turning his mens' deaths into a Senseless Sacrifice, but Iok's actions ruin Tekkadan's plans to take down the monster, allowing it to reach and destroy an entire farming village, killing everyone there.
- Green Lantern: Hal Jordan completely loses his sanity and decides to fix his failure to save Coast City... by killing the Green Lantern Corps, killing Sinestro, and then killing the universe... so he could remake reality "right". Fittingly, after all this nonsense, He went on to try and make all of that right, and ended up sacrificing himself to save the world (of course, he got better). Then a few years later, Geoff Johns retconned the whole thing to Jordan being possessed by a killer space bug made out of fear...
- In Superman story War World, Mongul blackmails Superman into retrieving a device guarded by Martian Manhunter which would allow him to control a super-weapon. Superman's plan -playing along with Mongul's plan and waiting for a chance to defeat him- fails, so Supes sets out to bring Mongul down to atone for his failure and earn Martian Manhunter's forgiveness.
J'onn: Now, because of you, Mongul has the key that can unlock chaos and I demand to know what you intend to do about it!
Superman: First, J'onn I'm going to construct a protective bubble, and return my three friends to Earth!
J'onn: Is that all-?
Superman: That's just the beginning! Next, I intend hunt up some heavy duty super-help! And then, I'm going to take down Mongul, no matter where in the universe he may be hiding and recover the Crystal Key... of die trying!
- Supergirl: In the first issues of her Post-Crisis series the titular heroine behaved as an obnoxious brat because of Kryptonite poisoning until in issue #19 she decides to turn over a new leaf and apologize to everyone for her jerkass behavior.
- Batman does this on Nightwing's behalf toward the tail end of The Joker's Last Laugh: Batman doesn't want Nightwing to think of himself as a murderer.
- This happens to Magneto. He's always been opposed by the X-Men, so by now he often attacks them at full power (which is a lot) instinctively. Sadly, the X-Men are mutants... some of the people Magneto wants to protect. Even worse, the one he accidentally hurts is the newest recruit, a 13-year-old (mutant) girl. "My God, What Have I Done?" is the short version of his monologue, when he realizes what he has done. Follow his Villainous BSoD and his first HeelFace Turn as The Atoner.
- Iron Man: Tony Stark, after the events of Civil War.
- A Crown of Stars: Shinji is determined to not leave Asuka alone again because he abandoned her several times in the past right when she needed him, and she got butchered and later raped. He also joins the military campaign to overthrow the warlords ruling his post-apocalyptic world even though he hates to kill because he caused the end of the world, and he thinks this is his chance to make things right.
- Scar Tissue: Shinji would never leave Asuka or go away because he defiled her and betrayed her when she needed him the most, which led to her very horrible and extremely painful death. So he remains by her side and tries to protect her and take care of her, not matter what, even though he thinks she hates him, because he feels he owes it to her.
- The Witch of the Everfree: Fluttershy nearly died in an accident (implied to be her fall from Cloudsdale) and Rainbow Dash blamed herself for not being there, so she dropped out of school in order to stay with Fluttershy and make sure that she would always be there for her in the future.
- Children of an Elder God: Rei wanted to make amends with Asuka after an Eldritch Abomination forced her to rape the red-haired girl. She felt so guilty that she was willing to let Asuka kill her if that was what her teammate wanted.
- For His Own Sake: Kitsune upon realizing how much the Hina Inn Girls antics have hurt Keitaro, vows to make it up and change for the better.
- Neon Metathesis Evangelion: After her realization about how she has always treated the pilots, Misato is determined to now make amends - to always be on their side, to show them the proper respect and gratitude, to shield them from unreasonable burdens by NERV, etc.
- This motivation turns King into The Determinator in the second Ultimate Video Rumble, after he realizes what his employers are up to.
- Aladdin said something to this effect in the first movie of the trilogy; "I've got to go back and set things right." He's referring to leaving behind the genie lamp, Iago grabbing it and giving it to Jafar, then Jafar using it to wish himself to be sultan and the world's most powerful sorcerer, in turn banishing Aladdin.
- Atlantis: The Lost Empire has this with Audrey, Sweet, Mole, Vinny, Cookie and Ms. Packard after witnessing Rourke punching Milo in the face and breaking the photo of his grandfather in front of him.
- The Nightmare Before Christmas: Basically, Jack and Oogie's whole fight is all about Jack trying to fix the damage he caused by pretending to be Santa Claus.
- The Powerpuff Girls affect this in their movie when while they serve a self-imposed exile on an asteroid, they hear the Professor being threatened.
- ParaNorman's zombies are desperate to do as much as they can to make up for the harm that they did in killing an innocent child who they believed was a dangerous witch. Given that this is a universe where death decidedly isn't cheap, the most that they can hope for is to help her pass on.
- The plot of Labyrinth follows this.
- Specifically, Sara makes a very dumb wish which is then granted, and spends the rest of the movie trying to undo the mistake by winning her (half) brother back, since Jareth doesn't allow takebacks on wishing.
- In The Empire Strikes Back, Lando does his best to get Leia, Chewie, Threepio, and Han out of Vader's power, though he was not entirely successful.
- Vader goes through something like this near the end of "Return of the Jedi".
- Legend (1985). Lily touches one of the unicorns, making it vulnerable to attack and leading to its death. She tracks down the other unicorn and finds Brown Tom guarding it.
Brown Tom: You! You're the cause of all our sorrow.
Lily: I'm — I'm so sorry. I didn't know. Please, please forgive me.
Brown Tom: I'm not the one you should be askin'.
Lily: Try and understand. I'm only trying to make things right. Darkness has sent the goblins back for the mare. It's not safe to stay here. You'll have to hurry! Leave now! Go!
- This is pretty much what the third act of the movie Mean Girls is about.
- John Woo's The Killer is about the Ah Jong, the title character, and his attempt to fix a tragic mistake that he made, which resulted in Jenny, the singer at the night club, being blinded by the muzzle-flash of his gun. The last hit that he goes on is an attempt to raise the money to have her eyes fixed, but unfortunately for him, Wong Hoi, his boss, has other ideas. It does not end well for him in the end, though then again, it takes the triad boss himself to finally kill him.
- It probably also makes the single weirdest case of Moral Dissonance in film history.
- This is also the plot to the classic film Magnificent Obsession. The life of wealthy asshole Merrick is saved at the expense of a brilliant, beloved and selfless elderly doctor's. The doctor's widow blames Merrick, he responds by stalking her and ends up causing a car wreck that blinds her. Merrick becomes a doctor himself so he can operate on the widow and fix her eyes.
- In There's Something About Mary, Pat Healy is visiting Mary Jensen's house and accidentally kills her dog. And his reaction to this is to, quite literally, attempt to resuscitate the dog.
- It works, which probably means that the dog wasn't quite killed. But in an extreme comedy, anything goes.
- In Iron Man, Tony Stark realizes what enormous damage his company's hyper-effective, super-powerful weapons (which he designed himself) are doing to the world, and is subsequently so horrified he shuts down the weapons department of Stark Industries and becomes a superhero to do damage control, also becoming The Atoner in the process.
- In Spider-Man 3, after freeing himself of the black suit, Peter sits alone in his apartment depressed after all his crimes he did while under the black suit. Aunt May comes in and checks on her nephew to see how he's doing and if he proposed to Mary Jane. Peter tells his Aunt that he's not ready for marriage because he had hurt Mary Jane and feels he is now lost on what to do. Aunt May then tells her nephew that he needs to forgive himself and that she believes that Peter will make things right again and that he is a good person, despite how Peter feels at the moment.
Aunt May: Well, you start by doing the hardest thing: You forgive yourself. I believe in you, Peter. You're a good person. And I know you'll find a way to put it right.
- Frankie in Daybreakers betrays his brother, but then comes to his senses and redeems himself with a You Shall Not Pass!.
- Home Alone: Kate, after realizing that her son Kevin had been left behind at home, and feeling terribly guilty for how she and the rest of her family treated him the previous night, makes it her mission to make it back to him and apologize to him.
- Me Before You: Will is forced to admit, in front of Louisa's entire family, that he trained the person responsible for shutting the local factory in an asset-stripping raid. He later secures Bernard, Lou's father, a job as Head of Maintenance at the local castle, with the dual purpose of freeing Lou from her breadwinner role.
- In Ace in the Hole, Tatum, an unethical reporter, forces the crew rescuing a trapped man in a cave to use a slower rescue technique of drilling through the mountain, which will take a week, rather than entering via the side, which will take less than a day — all in order to increase the dramatic tension and sell more newspapers. Once he realizes that this puts the crew in danger of reaching the man too late to save him, he orders them to use the original, faster technique but it turns out that they no longer can, because the drilling has weakened the mountain's structural integrity too much, and the man dies. To further twist the knife, Tatum then attempts to confess his role in the death, but dies before getting the chance.
- Roland, the "good guy" in The Dark Tower, ends up letting Jake, a boy he has grown to love, fall to his death by dropping him off an underground railway into a bottomless cavern in order to continue his quest. However, Jake is only in the same universe as Roland because he re-incarnated there after being killed in New York City. Roland unexpectedly ends up in Jake's New York at the point in time immediately before his death, and, because Roland still loves him and regrets his previous decision, takes the opportunity to prevent it. This not only saves Jake, but creates a horrible paradox solved only when Roland helps him cross again to his world, where he embraces him as a son and trains him to take part in his quest.
- It is said that this is due to Stephen King's own guilt at having killed off the character of Jake, whom he liked, in the first place, in which case Jake's role in the next six books is nothing more than a successful attempt to make amends.
- Prince Galrion later named Nevyn in the Deverry books spends several hundred years trying to teach magic to various incarnations of his lover Brangwen, after he had caused her death.
"Brangwen, my love, forgive me! If we ever meet again, I swear I'll put this right. I swear to you—I'll never rest until I set this right."
- This is a major theme in the Discworld novel Wintersmith. After a moment of thoughtlessness, Tiffany attracts the romantic attention of the personification of winter, messing up the cycle of the seasons. Though she insists that she's sorry for her mistake, the ever-blunt Granny Weatherwax informs her that sorry won't cut it, invoking this trope by name. She does eventually manage to fix things.
- Ward of Dragon Bones didn't make any mistakes himself, but his ancestors did mess up very much. Oreg (who was Made a Slave by the founder of the bloodline, and treated badly by many ancestors), uses Ward's guilty conscience about this to guilt-trip him into killing Oreg, thus freeing him of his slavery, but ruining the castle , to set things right again.
- Harry in The Dresden Files to an extent, during Ghost Story, when he realises the effects of some of his actions during the last book. Easier said than done since he happens to be dead, and the 'action' in question was dying and leaving his apprentice all alone.
- Harry also feels at least a little bit of an urge to set right all the innocent people he is told (several times) whose deaths he caused by destroying the entire Red Court and thus creating a HUGE power vacuum in the supernatural world.
- In Harry Potter, this is why Severus Snape was a good guy after all. He loved Lily Evans (Harry's mother and his former childhood friend), and ever since relaying the information that convinced Voldemort to kill her family, Snape's worked with Dumbledore to oppose Voldemort and to secretly protect Harry.
- The titular character of My Name Is Earl starts a list of all the things he must make amends for at the beginning of the series, being a newly-converted believer in karma. The entire series is Earl and his friends completing the list, one item at a time.
- DG in Tin Man is already motivated to take down her evil sister, but then sees a vision in a cave revealing that, as a small child, she accidentally freed the witch possessing Azkedellia.
- Connor does this in Primeval, in episode 5 of series 5, though he shows the intention a little before hand.
Connor: I helped build this. I need to make it right.
- Doctor Who:
- The Tenth Doctor in both parts of "The End of Time" is working from this trope and to a lesser extent Blood Knight after an A God Am I moment in "The Waters of Mars" resulted in history changing for the worse instead of the better as he intended, with Captain Brooks committing suicide to make sure time wasn't destroyed altogether.
- In Time Heist, the heist is a rescue mission contracted by the future dying Karabaxos for just this reason.
- In the Series 9 finale "Hell Bent", the Doctor has become The Unfettered Woobie, Destroyer of Worlds desperate to save Clara Oswald from her death by pulling her out of time at the last possible moment, which creates a paradox that threatens to destroy the universe, alienates him from others, and triggers another, briefer A God Am I moment. This is because he believes he is partially, if not entirely, to blame for Clara's death via his recent actions and choices, thus not living up to his "duty of care" as a Doctor. He hopes to make amends by wiping her memories of him and dropping her off on Earth to live a nice, safe life free of his "bad" influence. His Heel Realization reveals to him that what he wants is a Tragic Dream and what he truly must make amends for is his misguided, selfish attempt to undo something he wrongly blamed himself for. In the end, he is mind wiped of crucial memories of her, forgetting even that he loved her; as well he's alone again for — after years of seeking it — he probably won't be able to return to his home world for a while as he's a wanted man. But he accepts this, noting that one must "Never be cruel and never be cowardly. And if you ever are, always make amends."
- In the Series 10 finale "World Enough and Time"/"The Doctor Falls", the Doctor is desperate to save Bill Potts when his plan to test Missy's capacity for goodness goes unexpectedly wrong and she is blasted through the chest and sent to the other end of a gigantic starship. Unfortunately, thanks to Time Dilation and Missy's previous self he isn't able to pull this off; by the time he reaches her Bill is the very first Mondasian Cyberman and he doesn't know how he can fix that under the grim circumstances they are now in. She doesn't hold this against him, probably because he really didn't have a hope. Ultimately another character restores her to a humanoid form and they take the thought-to-be-dead Doctor back to his TARDIS before departing. Bill and the Doctor later reunite in the Christmas Episode that marks the finale for that particular incarnation of the latter.
- An episode of Law & Order: Criminal Intent had one of the main characters accidentally shoot a suspect, who turned out to be a cop. Cue the Big "NO!".
- Also happens in Law & Order: Special Victims Unit when Elliot realizes that a little girl falsely accused an innocent man of being her rapist, under pressure from Elliot himself and the shrink. The guy does not forgive Elliot since his life is already ruined, but Elliot throws himself wholeheartedly into finding the true culprit - and does so.
- And it's happened on the original Law & Order. When Claire Kincaid died, a drunk driver picked the worst possible time to kill someone in a hit-and-run. Jack covered up evidence to get him a murder one conviction—and death penalty. Only at the last minute—and after much shaming by Jamie—did he change gears and let evidence of the defendant's drunkenness in.
- This happens with Londo in the second season of Babylon 5, right after he realizes that he's basically started an interplanetary war by being an idiot and working with the Shadows.
- Buffy the Vampire Slayer:
- Spike's instant feelings of self-condemnation following his attempted rape of Buffy ultimately drove him to try to Must Make Amends by regaining his soul.
- Pretty much Angel's entire character, since he's The Atoner. Especially apparent after he gets his soul back and returns from hell. Nobody trusts him at all, especially Giles and Xander, so he spends the whole season doing good and helping them from the background to slowly show that he isn't evil anymore. In Season 9, Angel wants to make up for killing Giles by finding a way to bring him back from the dead.
- What Andrew spends most of Season 7 trying to do.
- In Supernatural, season five is this for Sam after accidentally starting the Apocalypse. The second half of season six starts like this for him after he finds out what he did while soulless.
- The end of Life On Mars has the main character betray his friends and leave them all to die, in order to return home. However, he decides he isn't really all that fond of 2006 after all, and jumps off of a roof in order to go back and save them. He still thinks he's in a coma, but he likes his coma dream better. Maybe. See the WMG for more speculation.
- This happens with Clark in Smallville as he tries to go back in time to save Lana Lang from dying but in turn causes his father's death.
- In Heroes, Sylar attempts one of these during Volume 3. It didn't take.
- Interestingly enough though, a version of the future that Peter visits during that arc shows what would've happened if Syl-erm, Gabriel Grey did complete his HeelFace Turn. That one didn't work out for long either.
- In the fifth season of The Wire, McNulty's plan to fake a serial killer probably loses all sympathy with the audience when he kidnaps a crazy homeless man to use as a "victim" and then dumps him in a homeless shelter in Virginia to ensure he's never found. McNulty's final action in the series finale is to track him down and drive him back to Baltimore so he can fix at least one consequence of his screw-up.
- This is mainly Tommy's reason for staying as the Green Ranger in Mighty Morphin' Power Rangers. Despite the fact the Rangers knew he was under Rita's spell, he felt horrible for the trouble he caused and stayed on.
- In The Duchess of Malfi, Bosola strangles the duchess, but almost immediately attempts to revive her once he learns that her brother, who hired him to commit the murder, is refusing to pay him. It doesn't work. He tries to make amends by spending the remainder of the play trying to protect the life of the duchess's lover. That doesn't work either, in fact, he ends up killing the guy he's trying to protect.
- Chell of Portal made a huge mistake by putting Wheatley in charge instead of GLaDOS, and spends the rest of the game trying to put GLaDOS back before Wheatley's incompetence blows everything up.
- The Light Side run of both Knights of the Old Republic games is fueled by this.
- Faldio from Valkyria Chronicles. After shooting Alicia to bring out her Valkyria powers, he justified his actions to Welkin, Captain Varrot and to himself that it needed to be done for Gallia's survival. After spending some time in confinement, he began to regret his actions and went to kill himself and Maximilian at the Marmota, even apologizing to Welkin and Alicia that his reasoning did not justify his actions.
- From Tales of the Abyss, we have Luke, who ended up destroying the mining town Akzeriuth from his blind loyalty to his mentor Van. He spends some time in denial, but after some soul searching and an Important Hair Cut to boot, he starts almost going to become a Martyr Without a Cause thanks to the overwhelming guilt.
- The Nameless One from Planescape: Torment. The entire point of him seeking out Ravel Puzzlewell in order to sever his body from his mortality — thus making him immortal and accidentally causing his amnesia — is that he knew he would never live long enough to make up for all of the crimes he had committed before he became good. It didn't work out too well.
- Roxas from Kingdom Hearts fits this. After killing off Xion, he tries his best to respect his dead friend's wish—by setting all the hearts that both he and she had collected free from Kingdom Hearts and foiling Xemnas's plan for gaining ultimate power. The way he goes about doing so wasn't really what Xion had intended him to do to begin with, and it was all because he wanted his life with Xion and Axel back. Riku stops him from going about his suicidal rampage to confront Xemnas, setting the stage for Kingdom Hearts II.
"Aqua, Ven... One day I will set this right."
- In Kingdom Hearts: Birth by Sleep, Terra gets tricked by Master Xehanort, and as a result not only nearly causes the apocalypse and puts Ventus in a permanent coma, he is on the receiving end of a Grand Theft Me, and Master Xehanort riding around in his body would cause uncountable calamities a decade later. As his Lingering Will falls into slumber, he thinks to himself:
- DiZ ends up being an example. When he reveals himself as Ansem the Wise to King Mickey, he recounts the deep shame he felt when he saw what his bid for revenge brought upon poor Riku, and later even tries apologizing to Roxas. He uses the name of this trope outright by saying "I must make amends to these young people".
- Raven does this twice over in Tales of Vesperia after he delivers Estellise to the Big Bad Alexei. After his HeelFace Turn, he saves the entire party by holding up the collapsing ceiling of Baction long enough for them to escape. After surviving this, he follows the party to the Heracles for the sole purpose of settling accounts with them. He's also a virtually immortal Death Seeker and fully expected them to kill him, but they settle for taking turns punching him in the face.
- Scorpion from Mortal Kombat cannot get over the fact that Sub-Zero, who at the time was Noob Saibot, murdered his family and clan and is constantly after revenge.
- Victor Lazarin from WildStar invented the "Everlife Elixir," which mutated into the Contagion that nearly wiped out his species, and then invented the Vitalus Serum that lets them keep together what little shreds of themselves—physically and mentally—they have left. These days, he's working tirelessly for a cure alongside being instrumental to solving numerous epidemics on the Exile fleet.
- In Dragon Age: Inquisition, Hawke feels that Corypheus is his/her responsibility as s/he was the one who woke him, and agrees to help due to wanting to fix that mistake. This is one of the reasons s/he is willing to sacrifice him/herself later in the story.
- The "Burning Tides" story arc in League of Legends had estranged friends Graves and Twisted Fate doing this simultaneously for each other in what they thought was their final hour. Graves (who hated Fate for abandoning him when a fight went south), gave Fate the means to escape; Fate (who left because he could see it was hopeless), immediately turned around and risked his life to free Graves. They survived and departed as friends again.
- Atop the Fourth Wall: An enraged Linkara destroys a pocketwatch belonging to the mysterious antagonist known as the Gunslinger, and is horrified to find out a) that the Gunslinger is trying to free his home dimension from a ruthless tyrannical government, and b) without the watch, he can never go home. Linkara immediately pledges all his resources to trying to fix the problem. And makes good on it too.
- In Worm, Taylor discovers that the first job she went on with the Undersiders served as a decoy for Coil so that he could abduct and imprison a twelve-year-old girl with precognitive powers. Taylor dedicates her life to rescuing the girl.
- Redcloak from The Order of the Stick ordered thousands of hobgoblins that he was in command of into certain death without thinking or feeling anything because of the ancient grudges between goblins and hobgoblins. After a hobgoblin saved his life during the battle, however, Redcloak reacted with horror to everything he he had done and become, and promptly led the hobgoblins to a smashing victory, even sometimes putting his own life at risk in order to save those of his men.
- Jung Hyun from Welcome To Room 305 only became friends with Sun Joong because he felt guilty over seriously damaging his leg (that never really healed). Over time it became a proper friendship though.
- In The Specialists, Hartmann will lead them back to the Nazi lab to destroy it -- after he voluntarily subjected himself to its experiments.
- In Tales of the Questor, his efforts to deliver the letter for God are to make up for killing the bad guys without even thinking about it.
- In Waterworks, Connie in a fit of rage destroys a fish, which was the only thing protecting a roomful of Innocent Bystanders from a villain with a fish-related Weaksauce Weakness. She realizes it is her duty to fix the situation somehow.
- In Urban Underbrush, Clive's casual dismissal of Caius set off a disaster. Clive goes to rescue him, and suffers embarrassment when thanked.
- Justice League: Hawkgirl was already torn between loyalty to her home planet and her feelings for the teammates on whom she was spying. After she sold out the Earth and the League to her Thanagarian brethren, she discovered to her horror that they intended to destroy Earth in a bid to save Thanagar. Hawkgirl turned on them and provided the League with information crucial to defeating the Thanagarians. Ashamed by her prior actions, Hawkgirl resigned from the Justice League and secluded herself in Dr. Fate's household in order to think long and hard about what to do with the rest of her life. She came to the conclusion that resuming superheroism would be her best means of atoning for her wrongs and reconciling with the League. In a heartwarming moment, the League let her know that they voted to let her stay a Leaguer with Superman being the tiebreaker ("I believe in second chances").
- This also makes a nice Call-Back to Superman: The Animated Series, where Superman has a similar need to make amends after Darkseid brainwashed him and turned him loose on Earth. A popular fan theory is that Superman's actions in the first episode of Justice League (essentially trying to become the world's policeman) is him still trying to make up for that.
- Futurama followed the old trope title (Resuscitate the Dog) quite literally. Fry finds his old dog from the 20th century fossilized in a construction site. Feeling bad for abandoning him (despite not meaning to) he arranges for the professor to actually revive him. With Science!
- In that same episode, Bender, in a fit of jealousy, literally kicked said dog's fossil into hot lava, but after realizing what he did, he went in to save him and recovered him.
- Constantly happens in the Thomas the Tank Engine series starting from season 8 to 16. After an engine makes three mistakes in their given job due to their Fatal Flaw or is just being plain incompetent, and after The Fat Controller calls them out for causing "confusion and delay", the engine will begin making things right with absolutely no problem at all. The engine finishes their job on time and The Fat Controller praises them by calling them "really useful engines".
- One could consider the scientific efforts to clone extinct animals this.
- "I'm New Jersey Governor Jon Corzine, and I should be dead."
- Many of the scientists who participated in or were otherwise linked to the development of nuclear weapons became fierce and vocal opponents of the nuclear arms race and advocates of nuclear disarmament. This list includes:
- J. Robert Oppenheimer, head of the Manhattan Project
- Andrei Sakharov, developer of the Soviet hydrogen bomb.
- He later parlayed his disarmament campaign into a campaign for human rights and democracy in the Soviet Union. This naturally got him exiled to Siberia, but he was later rehabilitated and was elected to the first, last, and only (more or less) freely elected Supreme Soviet of the USSR. He was shaping up to be a major leader of the Soviet democratic transition until his sudden death in December 1989.
- Otto Hahn, part of the team that discovered nuclear fission (with Lise Meitner and Fritz Strassmann)
- Albert Einstein, who sent a letter to Franklin D. Roosevelt, co-written with Leo Szilard, that led to the establishment of the Manhattan Project.
- Szilard as well urged the abandonment of the Project once it became clear that Germany was not developing an atomic bomb. (His fear that they were was the reason he wrote the letter to Roosevelt in the first place.)
- Niels Bohr, who had been on the Manhattan Project. He didn't quite advocate disarmament, but he was an architect of the "Atoms for Peace" vision that led to the creation of the IAEA.
- Any suggestion of overt nationalism, interest in military conflict, and especially any allusions to the Holocaust or other deeds of Nazi Germany tends to go over badly in modern Germany. Nearly seventy years after the fall of Nazi Germany, making amends is still Serious Business to the Germans.
- Earl Warren was Chief Justice of the Supreme Court of the United States from 1953 to 1969, and he led the Court in a highly liberal direction that included major rulings in favor of equal civil rights for African-Americans and other minorities, voter rights, rights of the accused, freedom of speech, and freedom of religion. Before that, during the 1940s, he was Attorney General of California and pushed the federal government to intern the Japanese-Americans living on the West Coast. Many people believe he realized just how awful that decision was and tried to make up for it with his time on the Supreme Court.
- The Nobel Prize. Alfred Nobel was an inventor and industrialist who invented both dynamite, one of the first smokeless powders, and who was heavily involved in armaments manufacture. Upon reading a prematurely published obituary which identified him as a "merchant of death" who "became rich by finding ways to kill more people faster than ever before," Nobel became obsessed with cleaning up his legacy, and significantly revised his will so that most of his estate would go to establishing the prizes. It seems to have worked, since he is remembered today almost exclusively in connection to the awards.
- After the success of Peter Benchley's novel Jaws and the movie based on it, sharks were slaughtered en masse out of misguided fear that they actively hunted people. This panic—dubbed "the Jaws effect"—ended up driving a third of all shark species to the brink of extinction. Benchley came to regret the role he'd played in this, eventually becoming a conservationist and dedicating the rest of his life to trying to teach people that sharks are not the monsters he had portrayed them as.