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227 Ten Piece » by Spartan of Chaos 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.
One Piece & Ben 10, T, English, Sci-Fi & Adventure, chapters: 24, words: 173k+, favs: 494, follows: 459, updated: 9/17 published: 12/12/2016, Luffy, Zoro, Ben T., Vilgax
146 The Eternal Twins » by G O G E T A 9 0 0 0 Dropped in a random Galaxy, on a random Planet, with no memory of how he got there; sixteen year old Ben Tennyson is without his Omnitrix and stranded when he's taken under the tutelage of the former Jedi, Ahsoka Tano. After the recent execution of Order 66, they're both on the run from the Empire and Darth Vader himself. Can Ben train to defend himself without his watch?
Star Wars & Ben 10, T, English, Adventure & Sci-Fi, chapters: 18, words: 120k+, favs: 194, follows: 188, updated: 9/9 published: 2/6/2020, [Ahsoka T., Ben T.]
776 Bleach: Ultimate Alien Remake » by Bigby the Big Bad Wolf It was a peaceful day in Bellwood and Ben is bored out of his mind, until a mysterious man arrives and sends him to another universe. Landing in the desert sands of Hueco Mundo, Ben meets the mysterious yet charismatic Aizen, who requests his help in a war in exchange for helping Ben get home. What's a hero to do?
Bleach & Ben 10, T, English, Supernatural & Sci-Fi, chapters: 26, words: 270k+, favs: 951, follows: 945, updated: 8/20 published: 6/6/2015, S. Aizen, T. Harribel, C. Stark, Ben T.
1k+ Avenging 10 » by CaptainRex75 Ben 10 has lost everything. Now he is given a second chance in a world full of superheroes. Will Ben decide to continue being a hero?
Ben 10 & Avengers: Earth's Mightiest Heroes, T, English, Adventure & Sci-Fi, chapters: 29, words: 478k+, favs: 2k+, follows: 2k+, updated: 7/3 published: 1/3/2015
2k+ The Null Fairy » by Emiyn What happens when something different happens in the finale of Ben 10 season 2? Ben sacrifices himself to allow Gwen back into the real world, leaving himself trapped in the Null Void. After staying in there, an incident occurs that transports Ben into an alternate world. Alternate ending Ben! BenxWendy later introduced in the story. Edit: Now currently in a remaking cycle.
Ben 10 & Fairy Tail, T, English, Adventure & Fantasy, chapters: 56, words: 611k+, favs: 1k+, follows: 1k+, updated: 5/12 published: 4/16/2017, [Ben T., Wendy M.]
523 Ben 10: Earth's Mightiest Heroes » by Firestorm808 Ben is sent to the world of Earth's Mightiest Heroes! With political and cosmic danger on the rise, it's up to Ben and the Marvel heroes to set things straight. (Tying up loose plot holes. Connecting various other Marvel shows. Cover image from Promsien.)
Ben 10 & Avengers: Earth's Mightiest Heroes, T, English, Adventure & Humor, chapters: 19, words: 66k+, favs: 1k+, follows: 1k+, updated: 2/21 published: 4/21/2018, Ben T.
772 Avengers: Agent-10 » by Masamune X23 After a few years of peacefulness Ben Tennyson engages his nemesis in another battle for the fate of the universe but their clash results in him ending up in a world where heroes and villains constantly battle and aliens aren't citizens on earth. Will Ben be able to change this new world for the better like he did on his earth or will this world's greater evils bring him down?
Ben 10 & Avengers: Earth's Mightiest Heroes, M, English, Sci-Fi & Adventure, chapters: 27, words: 283k+, favs: 1k+, follows: 1k+, updated: 1/7 published: 1/1/2019
1k+ James Harem 2 » by GreyKing46 It has been two years since Brother Blood. Two years since the Titan's went their own ways. To learn, to train, to grow stronger. Now they return, stronger than ever, as their greatest challenges look just over the horizon. No longer Teens, they are the Titan's. And they will fight together, until the the end. James(OC)XHarem. NightwingXDuela. ChangelingXHarem. CyberianXSarah
Teen Titans & Ben 10, M, English, Adventure & Romance, chapters: 102, words: 539k+, favs: 570, follows: 540, updated: 12/25/2022 published: 4/21/2018, [OC, Starfire, Raven, Jinx]
902 Ultimate ga Kill! » by MegaRdaniels Ben Tennyson never seem to run out of crazy adventures, but this has to be one of his craziest yet. When he is discovered by Night Raid, a group of assassins fighting for the Revolutionary Army, Ben must decide whether to join them or become a soldier for the corrupt Imperial Capital.
Ben 10 & Akame ga Kiru/アカメが斬る, T, English, Adventure & Sci-Fi, chapters: 52, words: 141k+, favs: 729, follows: 695, updated: 10/5/2022 published: 11/1/2016, [Ben T., Akame, Sheele] Esdeath
140 Infinity » by VerBeek The second and final adoption of Damont Evermore. After the death of an old enemy Ben's world turns upside down, as he is faced with a decision he never thought her would have to make, and an entirely new world. Welcome Benjamin Tennyson the the Marvel Universe!
Marvel & Ben 10, M, English, Adventure & Humor, chapters: 23, words: 115k+, favs: 298, follows: 312, updated: 7/28/2022 published: 11/11/2016
4k+ Ultimate Fairy: Volume I » by Ultimate10 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 by pyrohelixdrago, post-Oracion Seis Arc and onward.
Ben 10 & Fairy Tail, T, English, Adventure & Fantasy, chapters: 50, words: 761k+, favs: 3k+, follows: 3k+, updated: 6/15/2022 published: 1/29/2014, [Ben T., Erza S.]
39The fight for love » by GreenDragon94 When Gwen returns for Christmas emotions run high and secrets are revealed. Will the two lovers be able to face the challenges and find happiness? This is a Ben X Gwen story
Ben 10, M, English, Romance, chapters: 14, words: 37k+, favs: 102, follows: 95, updated: 7/30/2021 published: 5/12/2018
257 Ben10 and a Vampire Capu2 » by Bakuganman (DISCLAIMER: I don't own Ben10 or Rosario Vampire, just this story) Another year at Yokai Academy with everyone's favorite American hero and favorite monster harem! That means new aliens, new adventures and of course, new enemies. Even more, his newest (and only) monster transformation has a mind of its own! Can Ben survive another year, even with Gwen and Kevin backing him up?
Ben 10 & Rosario + Vampire, T, English, chapters: 34, words: 136k+, favs: 226, follows: 194, updated: 6/28/2021 published: 6/27/2017
59 Ben10 and a Vampire (Rewrite) » by Bakuganman (DISCLAIMER: I don't own either series, just this story.) Ben was a normal kid until he got a super-powered device known as the Omnitrix 5 years ago. Now he's going to a new school in Japan called Yokai Academy. What will he see there? Who will he meet? More importantly, just what was he getting himself into now? Eh... at least the girls are cute. (REMASTERED: 9/17/20)
Ben 10 & Rosario + Vampire, T, English, chapters: 15, words: 83k+, favs: 206, follows: 165, updated: 6/28/2021 published: 12/22/2018
130 Ben10 and a Vampire » by Bakuganman (DISCLAIMER: I don't own Ben10 or Rosario Vampire, just this story. However, the idea was not my own. I've adopted the story from 1 of the original writers and he said it was ok) Ben Tennyson is called to the monster school known as Yokai Academy. What will he see there? Who will he meet? Even more pressing, just what was he getting himself into now?
Ben 10 & Rosario + Vampire, T, English, chapters: 16, words: 75k+, favs: 228, follows: 184, updated: 6/28/2021 published: 5/22/2017
53 Ben 10: Aliens vs Assassins » by Man of cartoons Gwen has been kidnapped! With her life threatened and in possible danger, Eleven year old Ben and Lucy Mann (Omniverse) must rescue her before it's too late! Along the way, they'll face many trials, make new decisions, and change many fates. Air, Luna and Fall joins them in this new adventure, but Night Raid and the empire aren't far from taking interest in the two cousins.
Ben 10 & Akame ga Kiru/アカメが斬る, T, English, Adventure & Suspense, chapters: 4, words: 28k+, favs: 49, follows: 42, updated: 1/7/2021 published: 2/23/2019, Ben T., Lucy M., Night Raid, Jaegers
176 Ben 10: Heroic Frontier » by Shadow-Proclamation8 Ben Tennyson has not lost everything he loves. In fact, things have been pretty sweet. But with an old enemy threatening a new reality. It's time for our favourite bearer of the Omnitrix to step in. Witness Ben as he makes his way around this new world, full of new heroes and villains. It's Hero Time everyone!
Ben 10 & Young Justice, T, English, Adventure & Drama, chapters: 6, words: 30k+, favs: 462, follows: 517, updated: 12/15/2020 published: 5/14/2018, [Ben T., Zatanna Z.]
403 Corruption, Murder and Redemption? » by Man of cartoons Corruption is said to be a monster that eats the soul of a man. So what if a hero with a pure heart decides to come to a world where the monster has almost taken over? Will he survive? Will he break? And will he get this dumb blond to stop calling him a cattle? Please read to find out. BenXAriaXSheele (Love Triangle). It used to include Leone.
Ben 10 & Akame ga Kiru/アカメが斬る, T, English, Adventure & Fantasy, chapters: 42, words: 399k+, favs: 389, follows: 384, updated: 11/21/2020 published: 5/30/2017, [Ben T., Sheele] [Tatsumi, Mine]
779Krystal's Harem » by GreyKing46 The Sequel to GreyKing's Ben's Harem. Krystal Tennyson, the daughter of Ben Tennyson, is the current protector of Earth while her father looks for her lost brother. She must trust her lovers and her family as she grows as a hero and a person. OC/Harem
Ben 10, M, English, Adventure & Romance, chapters: 89, words: 378k+, favs: 365, follows: 366, updated: 8/29/2020 published: 3/13/2017, [OC, Highbreed, TwoTwo] Ben T.
141 Ben 10 Intergalactic Reviewer » by GreyKing46 In this galaxy there are Humans, Galvan, Anodites, Kraaho, Nemuina and so many more! They travel space, intermingle and their tech evolves as they all work together!... and there are lot's of gorgeous girls out there. And these guys will review them all! Staring Ben, Rook and Kevin with lots of lovely ladies, as well as guest stars. May be a one shot, please show support for more
Ben 10, M, English, Humor, chapters: 10, words: 86k+, favs: 224, follows: 213, updated: 6/2/2020 published: 2/25/2020, Ben T.
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