Adventure Time with Finn and Jake Crossovers
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Multiverse Chaos by Sci-FiMan2XXX reviews
A sequel to Hero Becomes Hunted REDUX Finn and his gang must stop Weyland from damaging and conquer the many versions of multiverse!
Crossover - Aliens/Predator & Adventure Time with Finn and Jake - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 914 - Reviews: 1 - Favs: 3 - Follows: 2 - Updated: 17h - Published: 10/7
Fairy Tale Adventure by Red Diz
After his adventure with Fiona and Cake, Simon is approached by a power cosmic entity to eliminate the Lich in another universe. Now armed with the power he possessed as the Ice King, he is moving forward with his life, making new friends and family, but will it be enough to fight The Lich and his plans?
Crossover - Adventure Time with Finn and Jake & Fairy Tail - Rated: M - English - Adventure/Family - Chapters: 1 - Words: 3,831 - Favs: 1 - Follows: 2 - Published: 10/16 - Simon P., Erza S., Natsu D., Wendy M.
Tanya Time by Websurfer23 reviews
Just as she had her goals within her reach, the damned entity known as Being X had ruined it all for her. By sending her to a world named Ooo that was far beyond her own comprehension with how wild it is. What's more is there's many new problems to deal with, from talking animals, animated objects, to horrible monsters. Luckily, she won't be alone for this mathematical adventure.
Crossover - Adventure Time with Finn and Jake & Youjo Senki: Saga of Tanya the Evil - Rated: T - English - Adventure/Humor - Chapters: 2 - Words: 11,487 - Reviews: 27 - Favs: 81 - Follows: 111 - Updated: 10/9 - Published: 10/4 - Finn, Jake, Tanya
Adventure Time with Finn, Jake, Darcy, Jiren, & The Crystal Gems! by Vgn Golley reviews
We...are...the Crystal Gems! We'll always save the day! So come on and grab your friends! We're going to protect various distant lands, and if you think we can't, we'll always find a way! That's why the people of this crazy world always believe in...Garnet, Amethyst, Spinella, Crystal, Pearl, Jiren, Finn, Jake, and Darcy! The fun will never end because it's Adventure Time!
Crossover - Adventure Time with Finn and Jake & Steven Universe - Rated: M - English - Adventure/Sci-Fi - Chapters: 6 - Words: 75,295 - Reviews: 46 - Favs: 37 - Follows: 36 - Updated: 10/8 - Published: 8/12/2022 - [Finn, OC] Jake
After The War (English) by genogarz1624 reviews
A new life, one seemingly filled with peace and tranquility, until a certain incident turns his new life upside down—a new war, but this time, he won't be able to do anything to stop it. His new goal is to survive the apocalypse, new adventures, new friends, new enemies.
Crossover - Naruto & Adventure Time with Finn and Jake - Rated: T - English - Romance/Adventure - Chapters: 5 - Words: 21,297 - Reviews: 5 - Favs: 43 - Follows: 44 - Updated: 10/1 - Published: 9/21
Chronicles of the Enchiridion Part 1: One Small Spark by Enchridion88Reborn reviews
Mordecai and Rigby encounter certain magical forces before the Mushroom War. They began to struggle with growing insanity as the world outside sat on the brink of destruction. 1000 years in the future, Finn tries to search for answers. Note: This is a reupload for the 10th anniversary of this story.
Crossover - Adventure Time with Finn and Jake & Regular Show - Rated: T - English - Drama/Supernatural - Chapters: 17 - Words: 33,203 - Reviews: 1 - Favs: 6 - Follows: 7 - Updated: 9/30 - Published: 6/24 - Finn, Jake, Mordecai, Rigby
Futa-Fionna by sinfulnature1123 reviews
Fionna always knew her world was meant to be more magical.
Crossover - Cartoon X-overs & Adventure Time with Finn and Jake - Rated: M - English - Parody - Chapters: 2 - Words: 2,198 - Reviews: 2 - Favs: 17 - Follows: 21 - Published: 9/27 - Fionna, Cake
The Retribution of Heisenberg by NoicePlamz reviews
A post-Felina Walter White has a new chance at life. No longer consumed by arrogance or ego, having shed that in his final moments in his original world, Walter White embarks on a tumultuous journey throughout a twisted version of the Land of Ooo. He will be tested, he will need to make tough choices, and he will not take any half-measures.
Crossover - Breaking Bad & Adventure Time with Finn and Jake - Rated: T - English - Adventure/Crime - Chapters: 1 - Words: 2,082 - Reviews: 2 - Favs: 3 - Follows: 7 - Published: 9/7 - Walter W.
DOOM in Adventure Time by Twilight Master Emerald reviews
Adventure Time story with HEAVY DOOM theme... expect Death, gore of varying levels, Dark lemons... will make other dark lemons of various stories tame in later chapters... not for the faint of heart, first three chapters are the prologue that sets up the story and only give a taste as to what the rest of the story has in store... solo request written by TME for Fiery Crusader
Crossover - Doom & Adventure Time with Finn and Jake - Rated: M - English - Horror/Tragedy - Chapters: 16 - Words: 91,406 - Reviews: 31 - Favs: 57 - Follows: 55 - Updated: 9/5 - Published: 12/9/2020 - Finn, Marceline A.
Finn The Wizard by Hogwarts.is.my.home1234
Finn The Human follows an owl through a portal to a place called Hogwarts... The golden trio is about to find its fourth member...
Crossover - Adventure Time with Finn and Jake & Harry Potter - Rated: K - English - Fantasy/Adventure - Chapters: 1 - Words: 415 - Favs: 2 - Follows: 2 - Published: 8/31 - Finn, Harry P.
Distant Lands: Shock and AAA by djpj7652 reviews
Following a rather Bizzare set of circumstances and more than a little Eldritch Meddling, the world of AAA has merged with the wasteland. Follow a mailman and friends as they make their way across these Distant Lands. (Cover by Squirrel Queen)
Crossover - Fallout & Adventure Time with Finn and Jake - Rated: M - English - Adventure/Fantasy - Chapters: 5 - Words: 29,144 - Reviews: 16 - Favs: 141 - Follows: 183 - Updated: 8/25 - Published: 9/22/2022 - Courier, Arcade G., Fionna, Cake
Mordecai and the Time Traveler by Pre-Animation Man
What happens when Finn gets sent back in time to 1942 only to land on Mordecai's doorstep?
Crossover - Adventure Time with Finn and Jake & Regular Show - Rated: T - English - Adventure - Chapters: 1 - Words: 4,474 - Favs: 1 - Follows: 1 - Published: 8/7 - Finn, Fionna, Mordecai, Margaret - Complete
Mothematical! by Arkham Master
Killer Moth is tired of being treated like a joke and wants to become more of a threat. After ending up in Ooo, he finds a swarm of giant moths that he gets under his control and decides to bring them back to Gotham in order to take over the city. Finn and Marceline return to Gotham and find out about the situation which leads them to help Batman again to stop Moth and his army.
Crossover - Batman & Adventure Time with Finn and Jake - Rated: T - English - Romance/Adventure - Chapters: 17 - Words: 25,611 - Favs: 6 - Follows: 8 - Updated: 7/12 - Published: 10/20/2022 - [Finn, Marceline A.] Bruce W./Batman, Drury W./Killer Moth - Complete
The Frosty Adventures of the Ice King Wan Kaneko in Fairy Tail! by Vgn Golley reviews
Wan Kaneko was just a normal magicless teenager in a world where magic, demons, mages, and wizards exist, but then one day, a magical golden crown fell down from the sky and granted him amazing, powerful ice magic! Now, watch, as he goes to Fiore, joins Fairy Tail, make new friends, fall in love and fight evil from all shape and sizes! Rated M for blood, violence, and lemons.
Crossover - Fairy Tail & Adventure Time with Finn and Jake - Rated: M - English - Adventure/Fantasy - Chapters: 13 - Words: 334,335 - Reviews: 77 - Favs: 169 - Follows: 157 - Updated: 7/10 - Published: 6/15/2021 - [OC, Lucy H., Juvia L., Erza S.]
Adventure Time With Caillou by Shaeril Cutiepasta McBrown reviews
Caillou goes to the Land of Ooo and meets Finn and Jake.
Crossover - Caillou & Adventure Time with Finn and Jake - Rated: M - English - Chapters: 1 - Words: 91 - Reviews: 1 - Published: 7/2
Traveler's Journey: Arc 1 - Join the Team by Nexus Matrix
Our beginning adventures starts at the past known as Land of OOO, where Marceline and Simon were still average before current events. And possibly some history left unsaid. Starring - Bugs Bunny, Mickey Mouse, Popeye the Sailor, Jerry the Mouse, and more in the future. (Mostly humor at first before further down) Rated M for safety.
Crossover - Movie X-overs & Adventure Time with Finn and Jake - Rated: M - English - Adventure/Humor - Chapters: 14 - Words: 357,312 - Favs: 6 - Follows: 6 - Updated: 6/26 - Published: 5/20/2019 - Marceline A., OC, Simon P. - Complete
Adventure Time With Superman: Year One by KAMO73 reviews
Finn knew he was special. He wanted to be a Helper just like his mother. He used his powers to help the people of Hub Island from the shadows. But will he keep hiding from the fearful people of the islands? Why was he sent here? What is his purpose?
Crossover - Superman & Adventure Time with Finn and Jake - Rated: T - English - Adventure/Fantasy - Chapters: 4 - Words: 15,793 - Reviews: 6 - Favs: 19 - Follows: 22 - Published: 6/24 - Clark K./Kal-El/Superman, Finn, Martin M., Minerva C.
Tale Of Two Gardens by Otar3000
Once upon a time, there were two gardens, one in space, the other on earth. Never met, yet shared the same story. A friend was left behind, but not forgotten and found again. By some miracle, it was remembered after a very, very long time in what would seem like an eternity.
Crossover - Adventure Time with Finn and Jake & Steven Universe - Rated: K - English - Adventure/Friendship - Chapters: 1 - Words: 4,065 - Favs: 3 - Follows: 2 - Published: 6/21 - Marceline A., Spinel - Complete
Frost In The Land of Ooo by Ria.li reviews
Jack Frost wakes up from a frozen sleep to a land unfamilliar to him. The Land of Ooo. Join him as he tries to find out what happened to him and as he navigates and encounters the land and its strange inhabitants. Inhabitants as strange as him, if not more. ...Definitely more. A collection of one-shots and occasionally connecting chapters.
Crossover - Rise of the Guardians & Adventure Time with Finn and Jake - Rated: K - English - Adventure/Supernatural - Chapters: 2 - Words: 2,819 - Reviews: 2 - Favs: 9 - Follows: 8 - Published: 6/18 - Jack Frost, Princess B. Bubblegum, Jake, Finn
After The War by genogarz1624 reviews
Una nueva vida, una aparentemente de paz y tranquilidad, hasta que cierto incidente pone su nueva vida patas arriba, una nueva guerra, pero esta vez no podrá hacer nada para detenerla, su nuevo objetivo es sobrevivir al apocalipsis, nuevas aventuras, nuevos amigos, nuevos enemigos
Crossover - Naruto & Adventure Time with Finn and Jake - Rated: T - Spanish - Romance - Chapters: 5 - Words: 23,170 - Reviews: 12 - Favs: 30 - Follows: 36 - Updated: 5/8 - Published: 4/25
The Demigod of Ooo by Gamelover41592 reviews
After turning the tide of the Giant War at the cost of his friends, Gaia and Kronos send Percy hurdling through time to a place where the gods are even more hidden, creatures weirder then his, bizarre kingdoms and only one and a half humans(counting himself) are still alive.
Crossover - Percy Jackson and the Olympians & Adventure Time with Finn and Jake - Rated: T - English - Adventure/Humor - Chapters: 6 - Words: 15,086 - Reviews: 25 - Favs: 72 - Follows: 88 - Updated: 4/15 - Published: 10/12/2018 - Percy J., Finn, Jake, Ice King
Oooh's End Chapter Five Continued by fanficwriter40000
The heroes of Oooh and their Seeker Agent friends are trying to make sense of their current situation, meanwhile Marceline may have met a potential love interest.
Crossover - Adventure Time with Finn and Jake & Bravest Warriors - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 40,568 - Favs: 1 - Follows: 1 - Published: 3/14
A Rift In The Multiverse Book One: Oooh's End An Adventure Time Story by fanficwriter40000
The Land Of Oooh is dying and Finn, Jake, Princess Bubblegum, Marceline and BMO must venture into deadly new territory to find a new home and do so with The Deadly, Dangerous and Evil Doctor Gross but does The "Good" Doctor have other Plans?
Crossover - Adventure Time with Finn and Jake & Bravest Warriors - Rated: T - English - Suspense/Fantasy - Chapters: 1 - Words: 40,568 - Favs: 1 - Follows: 1 - Published: 3/13 - Princess B. Bubblegum, Dr. Gross, Chris, Plum
Fairy Adventure Tail Time by Zek7824 reviews
An all out crossover series with Finn and Jake and all of Ooo getting transported to Earthland meeting Natsu, Lucy, and Happy of the famous magic guild Fairy Tail. Being best bros and saving each other's side, an adventure like you've never seen before begins as Finn and Jake fight against villainous evil like Dark Guilds, Demons, Monsters, and New Evil Alliances.
Crossover - Fairy Tail & Adventure Time with Finn and Jake - Rated: K+ - English - Adventure/Humor - Chapters: 9 - Words: 39,507 - Reviews: 16 - Favs: 46 - Follows: 56 - Updated: 1/22 - Published: 6/18/2019
Emperor of Ooo by portalparkour reviews
Lelouch's Zero Requiem was complete and after his death, God was not done with his toy. Lelouch has been struck down into the land of Ooo now bearing a code. He will struggle and lament to find a purpose once one's greatest work has been achieved. Maybe it's his turn to play advisor to the king? Following in C.C.'s footsteps in giving no fucks he will find his new purpose.
Crossover - Code Geass & Adventure Time with Finn and Jake - Rated: M - English - Adventure/Drama - Chapters: 1 - Words: 3,048 - Reviews: 4 - Favs: 25 - Follows: 35 - Published: 1/1 - Lelouch L., Finn, Princess B. Bubblegum, Earl of Lemongrab
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