"Nobody goes home. Nobody else comes through. It's just him - and me."Two warriors are sent back in time. One to change history, one to ensure it takes its established course. Or, at least, to prevent the first one from changing things. A game of cat and mouse ensues. Can also be thought of as Evil Counterpart IN TIME! If it does not overlap with Set Right What Once Went Wrong, it will instead overlap with Make Wrong What Once Went Right: In this case, the historical event in question goes as it originally did in the "good" timeline, and is averted in the "bad" timeline. Occasionally also occurs with dimensional travel with both the protagonist and the antagonist Trapped in Another World. Named, of course, for the Terminator movies, wherein a robotic superassassin that looks like a normal human being is sent back in time to pre-emptively kill the future leader of the human resistance in a Robot War. Paradox schmaradox! Compare Scry vs. Scry, where it's oracles doing this with clairvoyance.
— Kyle Reese, The Terminator
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- Mahou Sensei Negima! has a complex version of this: A Well-Intentioned Extremist from the future goes back to Set Right What Once Went Wrong, bringing her to the storyline's present. Unfortunately, her goals would cause major trouble for the main characters (turning into an ermine can put a crimp in anyone's plans), and she sends them a week forward in time to a future in which she's already won. Good thing Negi can go back in time too...
- Dragon Ball Z: Cell and Trunks, although they come from different timelines. Trunks had no idea who Cell was, and Cell killed the Trunks of his timeline before going to the past.
- Oddly, due to the Timey-Wimey Ball, between the two of them, they've killed two versions of the other each.
- Cable came back in time to prevent the future he grew up in. Stryfe, his evil clone, then came back in time to stop him — not so much because he was hugely enamoured of their home era, but rather because he lived to screw with Cable's life. Oh, and then Cable's evil adopted son came back as well... Later X-Men storylines have Cable jumping into the future to protect a girl he believes will become the saviour, while Bishop wants to kill her because in his original timeline she becomes The Antichrist.
- Slightly less directly, Bishop originally came back in time hunting a group of time-traveling criminals, but then decided to use his new location to protect the X-Men and prevent his home timeline. The criminals he was hunting don't seem overly concerned with this.
- And then there was the Legionquest story, which culminated in Professor X's evil son (yes, this is something of a recurring theme for the X-Men) traveling back to the 1950s in order to kill Magneto before he becomes powerful. An entire team of X-Men go after him. Between them, they screw things up even worse.
- Iron Man and Doctor Doom for some reason do this often. They wound up in Camelot once, and another time they inverted the trope by traveling to the future (after Merlin has awaken and King Arthur has reincarnated). Often, though they end up taking a third option and working together to get back. And again in Bendis' Mighty Avengers. It helps that both Doom and Stark have nothing to gain from changing anything in the specific past periods they enter, and both would rather keep the present they have. Seeing as it's dangerous to fuck with reality and all that.
- Wolverine goes back in time to kill Hank Pym in order to stop the titular robot in Age of Ultron, while Sue Storm goes back in time to stop him. He does kill him, but discovers the alternative is far worse.
- Hilariously, after enough of these stories and Bad Future stories have come and gone, Marvel officially threw their hands up and rendered all of them ultimately pointless by establishing that time travel never actually changes anything in the time traveler's original timeline, instead creating a whole new alternate timeline running parallel to the original.
- RoboCop Versus The Terminator written by Frank Miller had a human sent back to kill the former Alex Murphy before he could grant Skynet sentience, and a Terminator sent back to protect RoboCop by any means necessary — whether he wanted it or not.
- During one Omake in White Devil of the Moon, Chibi-Usa attempts to prevent Nanoha and Fate from meeting, with Vivio trying to stop her.
- A variation shows up in the Pony POV Series Dark World Series in that the twosome are from two different potential futures. The Nameless Passenger is revealed to be Twilight's potential Nightmare self Nightmare Eclipse trying to make Twilight become her and continue her "Groundhog Day" Loop plan while the Benevolent Interloper is her potential Alicorn self Princess Amicitia who's trying to help Twilight defeat Eclipse, becoming her instead. Amicitia wins and Twilight then performs her actions to close the Stable Time Loop and locking Eclipse's defeat in stone.
- Queen of All Oni has an interesting, all-evil version of this pop up in one chapter — Drago comes back in time to kill Queen Jade for no other reason than to secure his own chance at ruling the world in the future. Karasu, meanwhile, is sent back by the Matriarch (Jade's future self) in order to preserve the timeline. Ultimately, Drago is banished back to the future and imprisoned by the Matriarch, while Karasu is trapped in the past and imprisoned by Section 13.
- The Harry Potter fanfic Fusion of Destinies features a spell that can pull a deadly weapon from the future, but in a form of Equivalent Exchange, also brings a person who can defeat it. A long time ago, a Goblin rebellion used the spell and got a nuclear bomb along with a technician who gave his life to disable it. When Voldemort casts it, it brings back the X Parasite and Samus Aran.
- Terminator, obviously. Basically, the entire franchise is a Skynet and the adult John Connor repeatedly sending their agents back in time to subvert each other.
- In The Terminator, a robot is sent back to kill Sarah Connor before she even gives birth to John Connor, and a Badass Normal human is sent back to protect her.
- In Terminator 2: Judgment Day, a shapeshifting robot is sent back to kill John Connor as a child. A reprogrammed robot like the evil one in the first movie is sent back to protect him.
- In Terminator 3: Rise of the Machines, because John Connor cannot be located, the T-X is instead sent after who will become John Connor's top lieutenants and wife. Finding John Connor was just a bonus.
- Demolition Man inverts the trope, sending two people from the present into the future. One is a criminal "mistakenly" unfrozen from Cryogenic Sleep, the other is a present-day cop also in cryogenic sleep for a crime he was framed for, unfrozen to deal with someone simply too evil and dangerous for the wimpified future cops to handle.
- In one of the Austin Powers movies, when Doctor Evil returns, Austin Powers himself is unfrozen to deal with him.
- The first sequel plays it straight, with Austin following Evil into the past.
- Time After Time has H. G. Wells traveling into the future in pursuit of Jack the Ripper.
- Timecop features Jean-Claude Van Damme as, well, a Timecop who travels to the past to apprehend criminals who threaten to change the timeline.
- Trancers: When an evil psychic goes back in time to present day Los Angeles, Jack Deth is sent back to stop him.
- Captain America (1990) with Captain America and the Red Skull being revived in the future.
- A Terminator Threesome happens in Back to the Future Part II, when Marty and Doc travel back to 1955 to undo Old Biff's tampering with the timeline.
- At the end of 2009: Lost Memories, Saigo and Sakamoto end up in the past struggling to avoid or ensure the assassination of Ito Hirobumi.
- Men in Black 3. Boris the Animal goes back in time to 1969 to kill Agent K. Agent J goes back to stop him.
- Cassie and Millie in Frequently Asked Questions About Time Travel. The former travels back in time to repair time leaks while the latter is a time terrorist (they call themselves "editors") who comes to kill our heroes.
- A non-Time Travel example in The Sorcerer's Apprentice. Dave's first encounter with Balthazar and Horvath in 2000 results in both wizards being trapped in an ancient Chinese urn for 10 years (to the day). Oh, and both are fully awake all this time. In 2010, Horvath ends up coming out of the urn about a minute before Balthazar and throws the urn from a window in an attempt to stop Balthazar.
- Alisa follows space pirates in the Guest from the Future, who in their turn chase Kolya Gerasimov escaping via the time machine in order to save Mielofon from them.
- Star Trek: First Contact mixes up this trope by having the twosome be ships. A Borg Sphere and the Enterprise-E travel from the 24th century to a post-World War III mid-21st century Earth. The former to prevent mankind's first contact with the Vulcan race (which will result in the Federation being formed that would stop the Borg repeatedly from conquering the Alpha Quadrant) and the latter to ensure that first contact proceeds as it's meant to.
- In The Apocalypse Troll by David Weber (of Honor Harrington fame), an alien-created cyborg-modified human is sent back in time to destroy humanity before they develop FTL space travel. A human space-naval officer also goes back in time to stop it. Also somewhat of a subversion, as it started as two entire Standard Sci-Fi Fleet battle groups fighting both before and after the actual time travel, but each side only had a single survivor left after all the nukes finished flying so this trope still applies.
- In Drakon by S.M. Stirling, a genetically engineered superhuman woman accidentally travels through a wormhole from an alternate future back to a world resembling our own present time, and promptly begins trying to find a way to re-open the wormhole and bring through a conquering army of more genetic supermen. A lone Cyborg human is also sent back through a similar wormhole to stop her.
- In the Belisarius Series by Eric Flint and David Drake, two artificial intelligences from opposite sides of a far-future war get sent back to the early middle ages, one to try and alter the timeline so the evil side wins the future war, the other to try and stop the first one, via recruiting local Badass Normal allies. A semi-subversion, since both sides are attempting to change the timeline. Indeed, both rely on massively altering the cultural and technological evolution of the world; they just each want history to evolve in a different direction. This is because, after the changes already made by the "bad" AI, the timeline has already been irrevocably changed, so the "good" AI needs to insure that the right culture comes out on top.
- The Discworld novel Night Watch features Sam Vimes and a criminal both accidentally going back in time, and Sam Vimes has to stop him from changing history for the worse - while wondering whether he can morally allow history to run its course when it means innocent people dying that could be saved if he used his knowledge from the future to make a few changes of his own. He finally decides to make the changes, though these turn out to be entirely necessary to counteract those of his nemesis and arrive at broadly the same present they left.
- Used with a ridiculously complex plot in Animorphs: Megamorphs 3: Elfangor's Secret. In brief, a human (John Berryman) who is mind-controlled by an Alien Invader (Visser 4) gets a time machine, and the heroes (4 human teenagers, a human-brained hawk, and an alien, each of whom can change into animals) follow him through time. As part of some elaborate treaty involving god-like beings, the heroes become immortal after Jake is shot with a musket while Washington is crossing the Delaware. Washington dies as well, thanks to Berryman/Visser 4 tipping off the British. Because of Visser 4's influence on time, the course of history is changed, to the point that in World War II, Nazis are the good guys and the British still hold slaves. The heroes were not aware of this while at Normandy, and neither was Visser 4. The protagonists' fighting for the British at Normandy brings a British victory, dooming the world to slavery. After much debate about the ethics of changing the course of time once more, the heroes decide to go back in time and prevent John Berryman's birth, stopping the entire sorry situation in the first place and saving Jake.
- Star Trek Expanded Universe:
- In the novel Imzadi has an aging Riker trying to change the past back to what it was, with Data trying to keep it as it was not knowing that it was changed in the first place. When the characters realize this at the end and ask the Guardian of Forever why it didn't say so sooner (potentially saving them all a lot of trouble and/or Angst), it replies (literally) "You Didn't Ask."
- In the Strange New Worlds story "God, Fate or Fractals"'' it's Wesley Crusher versus a pair of Temporal Investigations agents.
- Dies Irae - Heljanita wants to change the past, and Darkscar wants to unchange it.
- Rebel in Time by Harry Harrison. A racist colonel steals the design of the Sten submachine gun and travels back in time to change the course of The American Civil War. He is pursued by another officer, whose task isn't made easier by the fact that he's black.
- In Tim Powers' The Anubis Gates, a millionaire discovers the existence of time portals and uses them to visit the past. A scholar brought along for his historical know-how discovers the millionaire's nasty ulterior motives, and must stop both him and the villains who'd opened the time portals in the first place. Subverted twice, in that 1) the millionaire isn't looking to change documented history, but to become a power behind the throne; and 2) the historian isn't sent back to preserve anything, and initially is only looking for a way to get back home.
- For King And Country, by Robert Asprin and Linda Evans, features what seems to be an example of an IRA agent traveling back to Arthurian times to change history in Ireland's favor or simply punish England, and a British soldier trying to stop it. They go all the way back to around 500 AD or so and share the bodies of people close to King Arthur. It seems like a Stable Time Loop and/or Tricked Out Time, but the ending is a little ambiguous. Meanwhile, in the Future, their bodies remain in a comatose state while they are in the past.
- An unintentional example in a Russian novel, where two Russian cosmonauts somehow end up in the past during the decline of the Roman Empire. One of them gets captured by barbarians, while the other one ends up becoming a Roman legionnaire. Eventually, the latter becomes the primus pilus (senior centurion) of a Roman Legion and is determined not to let the Empire fall, while the other manages to become the chieftain of the Germanic barbarians who captured him. You can see where this is heading.
Live Action TV
- Harlan Ellison's The Outer Limits (1963) episode "Demon with a Glass Hand" may have created this trope. In fact, the producers of the first Terminator movie had to pay a settlement to him following a lawsuit.
- In Terminator: The Sarah Connor Chronicles, another evil robot is sent back to kill John Connor as a teenager, and a reprogrammed robot who looks like a cute waif of a girl is sent back to protect him. Over the course of the series, other robots and human resistance fighters are also sent back. They even have conflicts between the many terminators sent back, if their tasks conflict with one another. For example, a terminator is sent to kill and replace Special Agent James Ellison. The attempt is interrupted when Cromartie, a terminator sent to find and kill John Connor, saves Ellison and destroys the other robot. When asked why by Ellison, Cromartie simply says that Ellison will lead it to the Connors. Not under duress but because Ellison is looking for them himself.
- Quantum Leap, in later seasons, features an Evil Leaper who tries to undo the positive changes in the past wrought by Sam Beckett.
- Time Trax is a variation. The hero was sent back into the past to retrieve several escaped criminals who escaped to the past with the help of a Mad Scientist. This trope applies since the Mad Scientist himself also escaped into the past, and several times his schemes in the past threaten to change the timeline, and the hero must stop him. Unfortunately, the show can't decide on whether the 20th century shown is actually the main character's past or merely a time-shifted alternate universe. The main character's main problem with them is that they're escaped criminals, not that they're a danger to his timeline. He does, however, have a personal score to settle with the Mad Scientist for killing his Love Interest in the pilot.
- This was the central idea of Tru Calling, though by the time it was revealed that this was the case and the conflict between Tru (change the past to save people) and her counterpart (keep this past the same and let people die) properly introduced the show was on the verge of being cancelled, so the idea was never fully developed.
- A major plot in the first seasons of Star Trek: Enterprise was the Temporal Cold War, in which various future factions used agents (some of them sent from other eras, others natives of the 22nd) to try to manipulate "historical" events in their favor.
- The plot of the Star Trek: Deep Space Nine episode "Trials and Tribble-ations". The villain of the TOS episode "'The Trouble With Tribbles" attempts to assassinate Captain Kirk in order to alter the outcome of that episode, and our heroes need to stop him.
- Mirai Sentai Timeranger and its adaptation Power Rangers Time Force are about mutant criminals coming back from the year 3000, and the Time Police right behind to stop them.
- Kamen Rider Den-O features Imagin going into the past to wreak havoc with Kamen Rider Den-O time travelling to stop them.
- In Charmed episode 4 season 3 "All Halliwell's Eve", the sisters are sent back in time to save one of their ancestors; at the same time, team evil is sending back their main agent to prevent their birth.
- The whole concept of the oft-mentioned Time War in the new series of Doctor Who, with the Time Lords themselves waging war against a galaxy-spanning Imperial Dalek fleet. The war was so big, most other species were too technologically underdeveloped to even notice.
- Series two of Ashes to Ashes becomes this, with Martin Summers trying to Set Right What Once Went Wrong from his perspective, but would actually Make Wrong What Once Went Right for everyone else. Alex decides that acting as the Time Police will enable her to get home.
- The 4400 were abducted by people from the future and returned to the present to Set Right What Once Went Wrong, while members of the anti-promicin conspiracy known as The Marked were sent back by a different future faction to thwart them.
- The Supernatural episode "The Song Remains The Same" ultimately turns out to be a Terminator Threesome. First, Anna goes back in time with the intention of averting the apocalypse by killing John and Mary Winchester before Dean and Sam can be born. Sam and Dean, with Castiel's help, follow her in order to save their parents from Anna and from their fates in the original timeline. Finally, Archangel Michael goes back to ensure that history takes its established course.
- Hercules: The Legendary Journeys has a complicated case in the two-part episode "Armageddon Now". Callisto is sent back in time by Hope to kill Hercules's mother to prevent his being born. Iolaus is sent back in time by Ares to prevent this. While killing Hercules's mother is clearly an example of Make Wrong What Once Went Right, Callisto agrees to commit the heinous act in exchange for the chance to prevent her parents from being killed by Xena's army. That doesn't go well for her, when it turns out to be a Stable Time Loop with her killing her own family by accident.
- An episode of The Adventures of Superboy might as well be called "Terminator: The Episode". An android arrives from a distant future to kill Clark, as Clark's descendants will have ensured that the future is a utopia. To stop the android, a woman is sent to save Clark, who turns out to be quite strong herself, causing Clark to wonder if she's one of his descendants. At the end, after the android is destroyed (actually, it self-destructs after Clark fakes his death), the girl turns out to be an android herself, who explains that now that her own mission is complete, she must self-destruct as well to prevent any changes to the timeline. She only asks that Clark bury a certain component of her in a specific place for her future creator to find (i.e. an indicator that she succeeded).
- In the pilot, 8 members of Liber8 (a terrorist movement fighting the corporate government) are sent back in time from the year 2077 to present day Vancouver, along with corporate police officer Keira Cameron. The Liber8 members, with all their skills, knowledge and futuristic upgrades, decide to topple the corrupt corporations who will eventually take control of the government, so Cameron allies with the Vancouver police to take down what temporal locals see as an emerging terrorist cell.
- Continuum gets downright recursive with this; the initial conflict between Kiera and Liber8 generates a whole new timeline, even worse than the original 2077, and another character arrives from this timeline to prevent both Kiera and Liber8 from screwing things up further. There's also yet another time traveler, from some indeterminate point in the future, who goes to the past and founds an organization of Time Police who are trying to stop all of the above.
- This is the premise of Terminator 3: Rise of the Machines, with the player in the role of the T-850. Symbolized in-game by the two Terminator heads on the playfield.
- The Big Finish Doctor Who episode "Flip-Flop" had two storylines, each taking place before the other — with the same characters from each reality crossing over into the other one at the halfway point after going back in time, then going back in time to try and undo what they've done, causing the events in the other reality in the process.
- In A Very Potter Sequel, Lucius Malfoy travels back in time to kill Harry and prevent Voldemort's defeat. Draco hitches a ride in order to stop him.
- In DC Universe Online, hero and villain players do this as they try to mess with or prevent the opposing faction from messing with the origins of iconic characters.
- In Achron, this is what happens in a standard two-player game.
- In Time Shift, the Big Bad is a disgruntled scientist who uses a time-traveling suit to travel to the past and use his vast scientific knowledge to Take Over the World and establish a fascist dystopia. The player is a second scientist, also equipped with a time-traveling suit, who follows the first scientist through time in order to stop him.
- BlazBlue: The Black Beast and Hakumen are both pulled into the past by the same incident, setting up the "Groundhog Day" Loop that plays out repeatedly in the game.
- Rescue Raiders does this with whole armies: one fighting to change the outcome of World War II, the other to stop them.
- Inverted like crazy by Brütal Legend. The evil "Emperor" (actually Empress, but demons don't differentiate apparently) Succoria is sent forwards in time, along with humanity's greatest warrior Riggnarok, who has sworn to slay her and is effectively her time-travel stowaway. When she reaches the future, she suffers a Villainous B.S.O.D. when she realises that humanity wins. Instead of slaying her, Riggnarok begins to feel the inklings of pity, and, well, the road gets lonely...
- Played with both ways in Dark Chronicle: Emperor Griffon, who resides 10 thousand years into the past, is doing battle with La Résistance 100 years into the future. In order to eliminate them, he sends out his agent into the present, to destroy his enemies' settlements and erase them from existence. Enter Monica, from 100 years in the future, whose Cosmic Keystone allows her to travel back to the present. With the help of the present-day protagonist, Max, she restores her allies' "Origin Points" and preserves future history (and, in one notable case, improves upon it.) Of course, Griffon's agent Gaspard will try to thwart their efforts....
- The Legend of Zelda: Oracle of Ages has Veran, Nayru, Link, and Ralph, in a bizarre time-traveling quadrangle of Big Bad, Living MacGuffin, the hero, and The Scrappy.
- Also happens in towards the very end of Skyward Sword, where Link and Groose follow Ghirahim back in time in order to both save Zelda and prevent the resurrection of the Demon King Demise.
- EarthBound displays this right at the beginning of the game. Giygas chose to stop Ness while he was still weak by sending a Starman Jr. back in time to kill him directly. Luckily for Ness, a time-travelling alien named Buzz Buzz found him first to protect him. Unfortunately, Buzz Buzz dies shortly afterward. In true Terminator fashion, it is this time-travel attack that kicks off the plot and sets Ness on the path to defeat Giygas. Happens in the endgame too: Giygas is launching his main assault in the past, so the heroes have to go there to fight him.
- The central premise of The Journeyman Project. In fact, the purpose of the Temporal Security Annex (later Temporal Security Agency) to ensure that this trope is in effect in case someone else gets ahold of a Time Machine.
- In the Interactive Fiction game Jigsaw by Graham Nelson, the player character (known as "White") is attempting to stop "Black" from changing the past, although neither side is really in the wrong.
- In Millennia Altered Destinies, the player is given a timeship by a hooded alien to guide four races in the Echelon Galaxy in order to stop the expansion of the evil Microids. One of the major obstacles is an alternate version of the player recruited by the Microids to sabotage the player's work. Like the player, he cannot be killed. While the game is normally played in a Take Your Time manner, since you're not required to immediately rush to resolve such and such crisis, your Evil Counterpart is on San Dimas Time with you and can alter the past whenever he feels like it.
- Time Hollow plays a variation of this. Upon learning that the past has changed, the protagonist tries to undo the antagonist's interferences in time through time portals. The biggest conflict is trying to save the antagonist's mother, who sent herself a letter in time to commit a form of suicide.
- Magical Girl Lyrical Nanoha A's Portable : The Gears of Destiny has Well-Intentioned Extremist Kyrie Florian jumping back in time to retrieve an artifact that could help her scientist father save their dying planet. Idiot Hero Amitie Florian then jumps back in time to stop her, since as said father mentioned, interfering with the time stream could lead to even worse consequences than the destruction of their evacuatable planet. In addition, the both of them are also Ridiculously Human Robots.
- Pokémon Mystery Dungeon: Explorers: Has Dusknoir and Grovyle. One is there to stop the other from plunging the world into a dark, frozen hellscape. However, the established course of the timeline is that hellscape, thus the game plays with the trope with a Villain with Good Publicity trying to stop the Hero with Bad Publicity from changing anything.
- An ongoing, chessmaster-y form of this is half the plot of Radiant Historia, with the Big Bad making minor changes to Make Wrong What Once Went Right and Stocke making similar changes to counteract them.
- Fire Emblem Awakening features "Marth" or Lucina, as she's actually named, as well as any other child characters, sent back to prevent the Bad Future, and the actual Player Character, or at least an alternate thereof sent to enforce it.
- In Dragon Ball Xenoverse, Towa and Mira are out to Make Wrong What Once Went Right. Time Patrol Trunks, along with you, are out to stop them and fix history. Then after you defeat Mira, Towa retreats and Demon God Demigra takes their place.
- The "Surreptitious Machinations" arc of General Protection Fault draws heavily from The Terminator, taking place in a future where Empress Trudy has conquered the world, and where Nick and Ki's son Todd goes back in time to prevent the future from coming about, while the Empress herself goes back to stop him. Interestingly enough, it's revealed at the end that only by the Empress' informing her past self could the bad future come to be (which would only happen if the bad future already exists, creating a time paradox), which reverses their roles. A Terminator comes back to the present to deal with Todd, but fails early on and serves as a way to frame Fooker for murder.
- S.S.D.D has this with two factions, the Anarchists who are trying to orchestrate the past to result in an economic collapse leading to their rise in power, and Dr. Cook's people who are trying to avert that. Cook's group has one cybernetically-enhanced Super Soldier (Tessa), while the Anarchists send a series of robots and clones.
- Bad Machinery's "Case of the Forked Road" has two different Power Trios taking these roles. It's made slightly more complicated by the fact that Calvin Goater has been time-travelling before them for as-yet-unspecified reasons.
- From the '90s X-Men cartoon:
- A two-episode arc involved Bishop traveling from the Bad Future to the present day, attempting to prevent the outbreak of a mutant plague. He succeeds. But his actions backfire, however, and result in the deaths of the X-Men and the complete extinction (rather than just decimation) of mutants. Specifically, the vaccine that was created to counter the plague was also needed by future mutants to survive and due to Bishops actions, it was never created—so Cable comes from an even further future to stop Bishop. Cause the mutant plague or stop the mutant plague? Nah, Cable takes a third option: Infect Wolverine with the plague, letting his healing factor develop the vaccine, then destroy the plague.
- You've also got the more basic variety in most Time Travel episodes. First it's Bishop and Nimrod, then it's the Cable and Bishop thing, then it's Bishop and Fitzroy, then it's Shard and the various agents of Apocalypse (though they're from the present, Apocalypse is the version from Cable's future.) In the end, the Bad Future is NOT prevented, but at least they always managed to stop those who'd make it any worse.
- Replace individual with faction and this was the plot of the third season of Beast Wars, when it turns out Megatron's plan to go back in time to destroy Optimus Prime didn't go as completely off the rails as initially thought.
- The second series of Gadget Boy & Heather, "Gadget Boy's Adventures in history": Heroic trio versus four villains.
- In a variant on Teen Titans, Warp from the far future is followed through a time-gate by Starfire from the present, and she winds up hunting for him Twenty Minutes Into The Bad Future.
- Megas XLR:
- One episode revolves around Gorrath's second-in-command's plan to kill a current-day ancestor of Kiva, as Kiva and Jamie try to protect her.
- The show's main plot has shades of this as well: Kiva and MEGAS are sent back in time (further back than expected) and the Glorft commander followed her.
- Superman: The Animated Series has a crossover with the Legion of Super-Heroes where Cosmo Boy, Saturn Girl, and Chameleon Boy protect a young Clark Kent from a time-travelling Brainiac. Clark winds up teleporting Brainiac into the sun.
- Jackie Chan Adventures did this with a Future Badass version of Jade and Shendu's Kid from the Future, Drago, in "J2". Future Jade's arrival was even accompanied by Terminator-style music.
- My Little Pony: Friendship Is Magic: In the fifth season finale, "The Cutie Re-Mark", Starlight Glimmer travels back in time to prevent Rainbow Dash from performing a Sonic Rainboom as a child, which would alter the fates of the main characters and prevent them from stopping various dangers in the future. Twilight and Spike follow her into the past to make sure that the Rainboom goes off like it was supposed to.