Times where someone attempts to Make Wrong What Once Went Right in Fan Works.
Crossovers
- The Doctor Who/Smallville crossover "The Clinton Street Car Crash
" features the Tenth Doctor arriving in Metropolis and realising that someone has been tampering with Clark Kent's timeline to retard his development into becoming Superman. He eventually determines that the party responsible is General Zod, who has been posing as the Jor-El A.I. in Clark's Fortress, who changed history by preventing a car crash that killed Chloe Sullivan as a child, starting a chain of events that led to Lex Luthor coming to Smallville (Zod hoped that Lex's influence would corrupt Clark, but settles for Clark's development as Superman being retarded). In the end, the only way to end Zod's influence on Clark's timeline is for the Doctor to take Clark and Chloe back to the moment of the original divergence, where Chloe deliberately causes the titular car crash to kill her own past self and restore the original timeline. - The Necromancer: After Sauron arrives in Storeybrooke, he sets out to reclaim the One Ring so that he can go back and rebuild his empire, which will erase the modern world (Middle-Earth being the past of Earth rather than another world as they initially believed).
- Neither a Bird nor a Plane, it's Deku!:
- In "Hope Carried 1,000 Years", an assassin from the 31st century traveled back in time with a Kryptonite bullet, intent on assassinating Izuku before he becomes Superman. Luckily, the would-be assassin is foiled by the Legion of Super-Heroes. The side-story also implies that so many people have gone back in time to kill Izuku before he becomes his Future Badass-self that the Legion has its members watch his younger self in shifts to prevent these attempts from succeeding.
- "Time and Chance (1): How the old Ice-Cream Parlor will Change" shows that this wasn't even the first attempt on Izuku's life. Brainiac assimilated a two-bit Villain named Koujou Joubu (also from the 31st century) as a proxy to deal with Izuku when he was five years old and vulnerable.
- Of Quirks and Magic: Izuku does this unintentionally when the League of Villains attacks Kamar-Taj. He uses the Eye of Agamotto in hopes of going back in time and stealing back the Book of Caligostro from Kurogiri, but he nearly gets sucked into the Timeless Aether and allows Ikiji to escape instead. He's immediately regretful for this and promises to never use it again.
- Arrow: Rebirth: This is the main plot for the second story, The Age of Heroes. The Council of Time Masters covet their ability to manipulate the timeline so much that after Oliver Queens's foiling of the Undertaking renders the timeline they chose not only unfeasible but also completely redundant in favor of a better one, they try to correct it by having the Ninth Circle kill all the people who originally died in the Undertaking to get the original timeline they chose back.
- The Battle of Actium has the Trickster try to hypnotize Mark Anthony and alter the title battle to prolong the Roman civil wars.
- The Road to Shalka has a villain whose main motivation is to retroactively turn a Pleasure Planet into a grimdark industrial powerhouse. The Doctor notes this will result in a small-scale Time Crash, though, if not fixed.
- Memento Vivere: After winding up stranded in the past and joining Braska, Auron and Jecht on their Guardian pilgrimage, Rikku recognizes that she's running the risk of inadvertently doing this through her presence alone.
- Underlined Twice: Gabriel, unhappy with Armageddon having been thwarted, uses the Archangels' combined power to send back a note to his past self that he needs to raise the Antichrist himself and prevent Crowley from Falling to make sure that Armageddon happens as planned. Crowley and Aziraphale barely avoid being Retgoned out of existence by the new timeline and they have to team up with their alternate timeline selves to thwart Armageddon again, with the added complication that going through too many time loops to fix it will result in a Time Crash.
- The Western Sky -- Series 1: Ginny uses a ritual requiring the death of twelve innocent people to go back in time and kill Sally-Anne Perks and her mother, then spends the following month giving instructions to her past self. Why? So she ends up married to Harry Potter, of course...
- Queen of All Oni: Drago comes back in time from some unspecified point in the future in order to eliminate Jade and other potential threats to his own rule in the future.
- The plot of DIO messes up the timeline has DIO using his Stand The World Over Heaven to change history so that Johanna Joestar (female Jonathan) would become his wife while Giornata (a female Giorno born as their child between them) would be born as their daughter in the 19th century.
- Feralnette AU: Future Bunnyx believes that she's setting the timelines straight with her meddling. In reality, she's meant to take a hands-off approach, only intervening to trim off dead branches and doomed timelines. Sadly, she's so self-absorbed that she presumes any deviation from the reality she knows is problematic, no matter how minor, and that all other timelines are Expendable Alternate Universes. Among the myriad issues she's caused with this closed-minded mentality is contributing to Marinette's breakdown by blaming her for every problem that arose, real or imagined, and dragging her into the Bad Future to face Chat Blanc and her own future counterpart's dead body, leaving her heavily traumatized.
- Weight Off Your Shoulder: Future Alix takes the attitude that her timeline is the only one that matters, and seeks to "correct" Marinette's mistake of passing the Ladybug Earrings on to a successor. Never mind how said successor has already brought down Shadow Moth, averting horrors like his stealing the Miracle Box, melting down all the Miraculouses inside and enslaving the Kwamis as Monarch. No, the only thing she cares about is ensuring that she gets to become Bunnyx eventually, without caring one whit about all the suffering that's been prevented.
- Eventually, it's revealed that it goes even further than that: as Bunnyx, she's been manipulating the very same timestream she claims to be "protecting" and "preserving", all for the sake of forcing Marinette and Adrien together, as she's convinced they'll make the "ultimate power couple". This puts her Lack of Empathy for the villains' victims and everyone else's suffering in a whole new light.
My Little Pony: Friendship Is Magic
- Great Minds Think Alike: Parodied. A large collection of villains from Twilight's future travel back to the past to kill her before she can stop them, all happening to arrive on the eve of the first anniversary of her coronation. However, since they're all working independently and each wants to be THE person who offs Twilight, they quickly dissolve into petty infighting rather than doing anything before getting rounded up by Twilight's future self. Future Twilight made all her villains think there was something special about her anniversary so any of them attempting this trope would all arrive at the same time, interfere with each other, and be able to be dealt with in one swoop.
- Pony POV Series:
- Nightmare Eclipse/Paradox's plan is to have each Dark World time loop end with Twilight going Nightmare and becoming her to perpetuate the "Groundhog Day" Loop. If any other outcome occurs, including Twilight saving the world without doing that, Paradox herself interferes in such a way to force Twilight to, even if the end result would've been a good outcome or actually Set Right What Once Went Wrong and prevent Discord's reign. This is especially notable because her original motivation was to Set Right What Once Went Wrong, but she allowed herself to be consumed by vengeance for Discord, forgetting why she started in the first place.
- In the Shining Armor Arc, it eventually turns out that the Hooviet Empire was supposed to have imploded decades ago, but General-Admiral Makarov — in actuality a reality bending imagination demon called the Shadow of Chernobull — influenced and manipulated events to prevent that, thus having the ripple effect of making the world a much darker place than it would be without his influence. It thus becomes the goal of Shining Armor and the Anti-Hooviet Rebels to Ret-Gone him from existence.
