Ben 10 Crossovers
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Amalgamation: Let Loose in Night City by epic insanity666
sent to investigate the disappearance of an entire zoo's animals was not something Kenneth Tennyson found himself getting roped into, especially when it involves rich corporate assholes thinking they can get away with breaking the dimensional barrier, oh well, time for some Rebellion.
Crossover - Ben 10 & Cyberpunk: Edgerunners/サイバーパンク エッジランナーズ - Rated: M - English - Parody/Sci-Fi - Chapters: 2 - Words: 2,417 - Favs: 5 - Follows: 7 - Published: 11h - OC
Ten Piece by Spartan of Chaos reviews
Ben Tennyson and his team are in for the adventure of a lifetime when Professor Paradox sends them on a mission to aid the Straw Hat Pirates in finding the legendary treasure One Piece and help Monkey D. Luffy achieve his dream of becoming the Pirate King. But, old enemies plot their return.
Crossover - One Piece & Ben 10 - Rated: T - English - Sci-Fi/Adventure - Chapters: 25 - Words: 178,539 - Reviews: 232 - Favs: 498 - Follows: 461 - Updated: 22h - Published: 12/12/2016 - Luffy, Zoro, Ben T., Vilgax
Ben 10 Omni-Magic Summer by Feedbackblast18 reviews
When 10-year-old Ben Tennyson is sent to his Aunts in Canterlot City for the summer, he thinks he is going to have a horrible vacation. but when a strange watch from space literally crashes into his life, he finds himself in the shoes of 10 different alien superheroes! With the help of some new friends and his family, Ben 10 can take on anything! 1 part kid, 10 parts superhero!
Crossover - My Little Pony & Ben 10 - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 23 - Words: 151,945 - Reviews: 25 - Favs: 42 - Follows: 40 - Updated: 12/29 - Published: 9/21 - Princess Celestia, Sunset Shimmer, Ben T., Max T.
Harrison Tennyson by spitfyre1 reviews
After Vernon went too far one day Harry found himself a new family, meet Harrison Tennyson, hero, plumber. How will he handle his new responsibilities as a world he left behind wants him back eventually Pairing HP/GT/KE and potentially more.(FEM! Kevin)
Crossover - Harry Potter & Ben 10 - Rated: T - English - Romance/Adventure - Chapters: 6 - Words: 19,407 - Reviews: 43 - Favs: 349 - Follows: 390 - Updated: 12/29 - Published: 11/9/2021 - [Harry P., Gwen T., Kevin]
A Tennyson Christmas by I craft experiences reviews
Natasha gets invited to the Tennyson Christmas get together. Surely nothing can go wrong, right? How can the Black Widow handle meeting the Tennyson family for the first time? Oneshot set in the AOM Universe (Caution: Rated S for Sappy)
Crossover - Ben 10 & Avengers - Rated: T - English - Humor/Friendship - Chapters: 1 - Words: 6,906 - Reviews: 1 - Favs: 8 - Follows: 6 - Published: 12/29 - Ben T., Gwen T., Max T., Black Widow/Natasha R. - Complete
Ben 10 RWBY Volume 2: Ultimate Omniverse by The Omni-Remnant reviews
Having returned from a massive adventure in the world of Remnant, Ben, Team RWBY, and the rest of their friends find themselves faced with new challenges at every turn on Earth. Be it villains old and new… or even things that they never imagined to be real. It's going to be a challenge unlike any they've seen before, but they're up for it. It's Hero Time! (Cover Art credit inside)
Crossover - Ben 10 & RWBY - Rated: T - English - Adventure/Romance - Chapters: 83 - Words: 1,171,211 - Reviews: 1644 - Favs: 677 - Follows: 639 - Updated: 12/29 - Published: 4/4/2021 - [Ben T., Yang X.L.] Gwen T., Ruby R.
Ben 10: The Quincy War by Shinobi360 reviews
When 18-year-old Ben Tennyson stumbles into the Wandenreich, he becomes the target of Yhwach's formidable Quincy forces, the Sternritters. In a fierce clash, Ben overpowers some of the deadliest Sternritters, only to be captured and held captive. As he awakens in the heart of a thousand-year war between realms, he faces an impossible choice: (Full Summary inside Chapter 0 and 1)
Crossover - Ben 10 & Bleach - Rated: T - English - Supernatural/Drama - Chapters: 3 - Words: 33,461 - Reviews: 49 - Favs: 84 - Follows: 90 - Updated: 12/28 - Published: 10/29 - Ben T., Bambietta B., Candice C., Ichigo K.
Earth's Mightiest Heroes by UltraPhantom reviews
When the powerful King Detritus and his massive army invade Earth, a group of unaligned heroes and a certain Anti-Hero, discover the only way to fend off the attack will be to work together as a cohesive unit. The Blur, Ben 10, Cat Noir, American Dragon, Gwen, Danny Phantom, Ninja, and Kevin combine their respective talents in an all-out battle to save the planet. YJHU: 1
Crossover - Danny Phantom & Ben 10 - Rated: T - English - Supernatural/Sci-Fi - Chapters: 20 - Words: 57,785 - Reviews: 62 - Favs: 80 - Follows: 84 - Updated: 12/27 - Published: 3/18/2020 - Danny F., Ben T., Gwen T., Kevin
Omni Violet(Aged Up Lemon fic) by TheAnonymousAuthor69 reviews
After an unfortunately messy mission, a much older Benjamin Tennyson and Violet Oarr try to take a bath together. Yes it is as weird as it sounds. (Ben Tennyson inspired by 5yl and Violet Parr inspired by Gewd Boi. Both characters are in their early 20's)
Crossover - Ben 10 & Incredibles - Rated: M - English - Romance/Humor - Chapters: 1 - Words: 1,724 - Reviews: 2 - Published: 12/27 - Violet P., Ben T. - Complete
Defenders of Reality: Fate's Last Stand by Shinobi360 reviews
As the Holy Grail War commences, the rogue Chronosapien Maltruant forms an alliance with villains Gilgamesh, Shinji and Kirei, one which threatens the multiverse itself. But with the likes of Shirou, Saber, Jeanne, Rin, Sakura and Maltruant's greatest adversary, Ben Tennyson,can all of existence be saved? Or will it be lost forever?
Crossover - Ben 10 & Fate/stay night - Rated: T - English - Supernatural/Sci-Fi - Chapters: 2 - Words: 21,927 - Reviews: 29 - Favs: 57 - Follows: 61 - Updated: 12/27 - Published: 9/21 - Ben T., Saber, Jeanne d'Arc, Rin T.
A Trip to Remember by LG Shala reviews
A shape-shifting alien hero, eager to see the universe after saving it. A human-gem hybrid, burdened by his inheritance, looking to discover himself. When Ben Tennyson and Steven Universe realize they're both going on a road trip, they decide to explore the universe together.
Crossover - Ben 10 & Steven Universe - Rated: T - English - Adventure/Sci-Fi - Chapters: 9 - Words: 43,277 - Reviews: 26 - Favs: 30 - Follows: 26 - Updated: 12/27 - Published: 4/20 - Ben T., Jimmy J., Steven U., Ronaldo F.
Lincoln 11 by TheMasterBlacksmith reviews
Kevin Levin has been missing for years, presumed dead. Ken Tennyson doesn't think so, and travels to Earth to look for clues. He stumbles across a large family, the only son of which has the peculiar ability to make his body take on the properties of any solid material he touches... (Adopted Lincoln AU)
Crossover - Ben 10 & Loud House - Rated: K+ - English - Chapters: 7 - Words: 10,491 - Reviews: 24 - Favs: 22 - Follows: 23 - Updated: 12/27 - Published: 7/30 - Ken T., The Loud Family
Girl Of Action by Fanfic Productions reviews
It started when a alien device did what it did and stuck upon her wrist with secrets that it. Now she is no ordinary girl, she's Iruma ten and when evil is taking place, she gets right up in it's face. Female deku with the omnitrix fanfic
Crossover - My Hero Academia/僕のヒーローアカデミア & Ben 10 - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 2 - Words: 17,614 - Reviews: 5 - Favs: 5 - Follows: 7 - Updated: 12/27 - Published: 12/11 - Vilgax, Inko M., Izuku M., OC
Ben 10-Justice League: The Series by darkstorm1364 reviews
Ben Tennyson was abducted by aliens when he was 10 years old after accidentally received the Omnitrix, but then got rescued by Tetrax. He also brought Rook Blonko with his side. Both Ben and Rook are orphans, where Tetrax trained them to become the Galactic Guardians. Then after reaching his teen years, he received the Ultimatrix and recruiting more members.
Crossover - Justice League & Ben 10 - Rated: T - English - Adventure/Drama - Chapters: 22 - Words: 193,885 - Reviews: 133 - Favs: 314 - Follows: 294 - Updated: 12/27 - Published: 6/7/2020 - [Linda L./Kara Zor-El/Supergirl, Ben T.] Clark K./Kal-El/Superman, Rook
Jade 10 by Inkaliber reviews
Ben was honestly shocked when his mind was seemingly sent back in time. He was just getting used to the super-powered device known as the Omnitrix. With that fateful moment soon approaching, however, nothing could stop him from being the greatest hero ever!... Except the strange girl replacing his cousin.
Crossover - Jackie Chan Adventures & Ben 10 - Rated: T - English - Adventure/Sci-Fi - Chapters: 7 - Words: 99,167 - Reviews: 25 - Favs: 43 - Follows: 40 - Updated: 12/27 - Published: 4/11/2021 - [Jade C., Ben T.] Kevin, Max T.
Ben 10: Remastered by Ciel Binns reviews
Ben Tennyson is your average 15 year old, but what happens when he finds the strongest device in the universe. Will he be able to do what it takes to rise to the occasion as a hero or will he fail, before he can even begin
Crossover - Ben 10 & Marvel - Rated: K+ - English - Adventure/Romance - Chapters: 26 - Words: 219,509 - Reviews: 122 - Favs: 144 - Follows: 157 - Updated: 12/27 - Published: 3/13 - [Ben T., Charmcaster/Hope] [Gwen T., Kevin]
We'll Carry On: An Ochako Omnitrix Story - Volume 1 by Transwiththeplans reviews
Ochako Uraraka finds herself unexpectedly taking on the mantle of the Omnitrix wielder from Ben Tennyson. As Ochako begins to explore the capabilities of the Omnitrix, she must also navigate the complex relationships and alliances, all while facing off against increasingly powerful enemies. Art by @gayartistsuzzan on Twitter!
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Humor - Chapters: 78 - Words: 490,665 - Reviews: 129 - Favs: 146 - Follows: 138 - Updated: 12/26 - Published: 12/31/2022 - [Ochako U., Izuku M.] Ben T., Tenya I.
Ben 10 x RWBY: Of Gemstones and Watches by Transwiththeplans reviews
Ben Tennyson meets Ruby Rose during his summer break, and picks up both the Omnitrix and a thrill for action. Along the way, Ben discovers new alien forms, develops new techniques to use in battle, and a blossoming romance, while also forging close bonds with his new friends. But can he and his friends handle being thrust into a conflict between good and evil? (Cover by elmike)
Crossover - Ben 10 & RWBY - Rated: T - English - Adventure/Sci-Fi - Chapters: 164 - Words: 1,267,046 - Reviews: 499 - Favs: 650 - Follows: 628 - Updated: 12/26 - Published: 12/26/2018 - [Ben T., Ruby R.] OC
Humanity and Heroes by Katariina Mariad reviews
Omniverse/Tamers; sequel to Heroes and Humanity. A little galvan named Albedo is back, and he has a couple of problems: Ben Tennyson is trying to kill him, no one will let him leave this silly planet to get away from him, and everyone in Japan is angry with him. Why did Fridge, Swamps and Hugh think moving him back to West Shinjuku was a good idea?
Crossover - Digimon & Ben 10 - Rated: M - English - Horror/Hurt/Comfort - Chapters: 113 - Words: 242,669 - Reviews: 1 - Favs: 9 - Follows: 8 - Updated: 12/26 - Published: 1/5/2022 - Jenrya L./Henry W., Albedo
Ultimate Fairy: Volume II by pyrohelixdrago reviews
Ben Tennyson has found himself in another universe, one filled with magic he never imagined. He comes across a few wizards who invite him to their guild, Fairy Tail. With no immediate ways to return home Ben must adapt to this new world, form new bonds, and grow stronger with his teammates to overcome many obstacles. Adopted from Ultimate10
Crossover - Ben 10 & Fairy Tail - Rated: T - English - Chapters: 21 - Words: 290,655 - Reviews: 1207 - Favs: 1,436 - Follows: 1,401 - Updated: 12/26 - Published: 12/5/2021 - Ben T., Erza S.
Ben 10: Rising of the Shield Hero by Chris Chronos reviews
In a twist of fate, Ben Tennyson, the powerful Omnitrix wielder from Dimension 2040, has been summoned as the Devil of the Shield to a fantasy world beyond the boundaries of the multiverse. Follow his heroic tale as he battles to protect those around him and shape the destinies of all those he encounters. (Set after the events of the Omniverse episode - "New Dawn")
Crossover - Ben 10 & Rising of the Shield Hero/盾の勇者の成り上がり - Rated: T - English - Adventure/Fantasy - Chapters: 33 - Words: 243,041 - Reviews: 195 - Favs: 356 - Follows: 383 - Updated: 12/25 - Published: 1/21/2022 - Ben T., OC, Firo, Melty
Guardian Digimon Book 1 Guardian of the Sea Remade by Redwallfan2000 reviews
When several evil organizations start disappearing and being quiet, Sailor Sun makes the risky choice choosing six heroes on Earth to prevent an evil Digimon's return by searching out the four special Mega Level Digimon known as Guardian Digimon. The Guardian Seekers begin their mission by searching for the first Guardain of the Sea.
Crossover - Digimon & Ben 10 - Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 21,031 - Reviews: 7 - Favs: 8 - Follows: 7 - Updated: 12/25 - Published: 12/7
Spirit Warrior in Shinigami Universe by Sharky Monster
What's happened when Dante entered Inside the Shinigami Universe, in place of his own Universe. This is the fight between the good and bad. Dante vs Benzarro.
Crossover - Ben 10 & Bleach - Rated: T - English - Romance/Mystery - Chapters: 2 - Words: 8,973 - Favs: 2 - Follows: 2 - Updated: 12/25 - Published: 12/23 - Charmcaster/Hope, Nega Ben
Journey Of Ben Tennyson by Sharky Monster reviews
A simple Tragedy Turn The Story Of Our Hero, A Normal Discovery Turn Into Even The Biggest Mystery. This Is My Fanfiction I'm writing the story and it will be completed soon. Basic Theme Is Ben Tennyson Travelling The Marvel Multiverse. And This Is the Season 1. I also posted this Story on the Webnovel, by doing a minor change renamed the MC as Sharky Tennyson.
Crossover - Ben 10 & Marvel - Rated: T - English - Mystery/Sci-Fi - Chapters: 100 - Words: 425,925 - Reviews: 58 - Favs: 46 - Follows: 44 - Updated: 12/25 - Published: 10/13 - Ben T., Wanda/Scarlet Witch, C. Danvers/Ms. Marvel/Captain Marvel, Emma Frost/White Queen
The Loud 10: Omnitrix Team Adventures by Harriet546 reviews
Lincoln Loud, the Omnitrix Team and the Omnitrix itself are as heroic as always. Join Lincoln and the Omnitrix Team as they go through adventures with heroic friends, make new ones, and fight to save the world and other worlds like it. (Inspired by The Loud 10 by GokuSannin9000).
Crossover - Ben 10 & Loud House - Rated: K+ - English - Adventure/Humor - Chapters: 86 - Words: 390,234 - Reviews: 34 - Favs: 51 - Follows: 40 - Updated: 12/25 - Published: 6/26/2018 - Lincoln L., Luna L., OC, Ronnie Anne S.
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