Time Travel Episode
Basically, an episode whose plot revolves around time travel. Maybe the villain wants to remove the hero from history. Maybe the resident Gadgeteer Genius wants to see the tech of the future. Groundhog Day Loops don't really qualify, since in that case the time travel is reset at the end. In some cases, the time travel is a Framing Device for a Recap Episode, or for giving a character's origins. See also Time Travel, Time Travel Tropes, "Groundhog Day" Loop.
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Anime & Manga
- Pokémon 4Ever is a textbook example; Celebe's powers even include time travel.
- "Time Terror" from Calvin and Hobbes: The Series.
- First Wave has two. Both involve the Bad Future. One has a member of post-Alien Invasion La Résistance use a time machine to save Cade's life. She succeeds and returns to her own time, hoping to find it changed for the better. In another, Cade is the one who travels to the future, where he finds his own future self, who has become an embittered man regretting his decision to let Jordan die in order to get the MacGuffin Hammer, especially since this somehow rendered the Hammer insert. In the end, Cade Takes a Third Option: he gets the Hammer and uses it to free Jordan from Mabus's control.
- In the final season episode "Mokey Then and Now" of Fraggle Rock, Mokey, Wembley, and Boober accidentally get sent back in time after triggering some mysterious magic inside the Sacred Cave. They're sent back to a time in the distant past that Mokey identified as being before the arrival of a figure called the Great and Wondrous Blunding. It turns out that the Great and Wondrous Blunding was none other than Mokey Fraggle, who teaches the ancient Fraggles the "Dance Your Cares Away" song, promotes having hair, and encourages freedom over following a leader.
- Supermarioglitchy4s Super Mario 64 Bloopers has two of these: "Time Travel Tells" and "Castle Jumping = Time Travelling = Zombies".
- Freakazoid! had an episode where the titular hero prevented the attack on Pearl Harbor.
- The Fairly OddParents had two episodes where Timmy went back in time, first to keep his dad from winning a trophy, and next to make Mr. Crocker less miserable. Both backfired horribly.
- In the Underdog story "Simon Says No Thanksgiving", Simon Barsinister and Cad went back to the 1620s to prevent the first Thanksgiving from taking place. Underdog and Sweet Polly followed them to keep history on track.
- In the second-season Ms. Pac-Man episode "Journey into the Pac-Past", P.J. turned Pac-Man's clothes washer into a time machine.
- Futurama loves using this theme. Episodes include: "Roswell That Ends Well", "Time Keeps On Slippin", "Bender's Big Score" and "The Late Phillip J. Fry".
- Ned's Newt: "Jurassic Joyride".
- In the episode, Ned and Newton go back in time to Friday so they can enjoy the weekend again, but instead end up at the dinosaur age, where Ned accidentally changes history simply by stomping on a fly. When they fix it and attempt to get back home, they instead end up at Gilligan's Island, but it turns out to be just a dream. Unfortunately for Newton, he notices W-ZIP TV is informing about Ned and him crashing at Gilligan's Island, and as the presenter calls him a "big blue doofus", it pushes his Berserk Button, which makes him attempt to get his agent, "the biggest egg roll in Chinatown" and "some broccoli with cheese sauce" until he turns back into a small newt.
- Phineas and Ferb has had two-"It's About Time" and "Phineas And Ferb's Quantum Boogaloo".
- The My Little Pony: Friendship Is Magic episode "It's About Time".
- Transformers Rescue Bots The season 1 finale "It's a Bot Time"/"Bot to the Future".
- Gravity Falls:
- "The Time Traveler's Pig", when Dipper "borrows" a time-traveler's device in order to get a "do-over" after he beans his Precocious Crush with a baseball.
- In a later episode, Dipper and Mabel end up ten years in the past after another run-in with the time-traveler. They use the opportunity to figure out why Soos never enjoys his own birthday parties.
- Static Shock had two—Season Three's "Flashback," where Static and Gear team up with a Bang Baby with time-traveling powers and travel back to the night Virgil's mom died, and Season Four's "Future Shock", a crossover with Batman Beyond, in which Static traveled to that era and teamed up with Terry Mc Ginnis.
- Jackie Chan Adventures three, all revolving around Jade: "Through the Rabbit Hole," in which Jade travels back to San Francisco in the 70s, meeting younger versions of Jackie, Uncle, and Valmont, "J2," in which a Future Badass version of Jade travels back to stop an criminal who escaped from her time, and "J2 Revisited", in which young Jade travels to the future to team up with her Future Badass self.
- Xiaolin Showdown had the two-parter "Days Past"/"Citadel of Doom" in which Omi travels to the past to get help from Grand Master Dashi, "The Sands of Time," which features Jack Splicer playing an evil Bill and Ted, and then the series finale "Time After Time" which is chock full of every kind of time hijinks.
- The The Adventures of Sonic the Hedgehog four-part Chaos Emerald Saga involves Dr. Robotnik forcing Professor Caninestein to build him a time machine so he can travel back in time to get the Chaos Emeralds and become the Supreme high Robotnik. Professor Caninestein invents time-travel devices for Sonic so he can find the Emeralds before him. The episodes involve a Pirate Ship, a Medieval Kingdom, a Pyramid, and a Prehistoric Island, respectively.
- Tiny Toon Adventures:
- In "A Ditch in Time", Plucky's future self invents a time machine, then travels back four days to show his present-day counterpart. The present-day Plucky borrows the time machine so he can travel back in time to do his homework ahead of time. However, when he shows it to Buster and Babs, he travels back to a Prehistoric Acme Acres, while Buster and Babs travel to a Medieval Acme Acres. They all meet the ancestors of the show's cast, mostly the Prehistoric ones. Plucky takes advantage of the Prehistoric ancestors, until Buster and Babs reunite with him and tell them the truth.
- In "What Makes Toons Tick", Calamity builds a time machine so Buster can show the viewers why his friends are the way they are. He and Calamity travel back to Dizzy Devil's first romantic encounter, Baby Plucky's experience with a mall elevator, and Hamton and Sneezer's fearless encounters with a closet monster.
- Justice League: The two-parter "The Once and Future Thing" has several of the heroes chasing time-traveling villain Chronos, first into the Old West and then into the future.
- Defenders of the Earth has "Terror in Time", in which Ming manipulates all but two of the Defenders into a time warp and sends them back to the days of King Arthur. While there, they meet Prince Valiant and help him to rescue his wife from an evil sorcerer. However, Ming's motive for sending his enemies back in time is far more nefarious than simple getting them out of the way; he has developed a parasitic mutant life-form - and he has used the Defenders as pawns in his plan to send the organism back in time and destroy all life on Earth.
- In The Star Trek Experience at the Las Vegas Hilton, an unknown entity/force takes a group of present (21st Century) tourists to the 23rd Century, but, when that happens, Captain Picard suddenly disappears. It is explained that one of the travellers is one of Picard's ancestors, who must be returned to the past (21st Century) to allow Picard's existence.