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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: 90 - Words: 1,274,834 - Reviews: 1787 - Favs: 739 - Follows: 700 - Updated: 4/26 - Published: 4/4/2021 - [Ben T., Yang X.L.] Gwen T., Ruby R.
Ash 150 Pokémon Force by JDF Legacier Morphicon reviews
It has been a long 5 years since the Summer that changed Ash's Life forever, with his adventures done, dormant Pokétrix, and living a normal, everyday life as a normal kid ever since. Now Ash, a confident 15-year-old teenager find his life Changing when an Unknown Pokémon attacks him and Mohn mysteriously disappears, and Earth is under threat! 150 brand new Pokémon it is HERO TIME!
Crossover - Pokémon & Ben 10 - Rated: K+ - English - Adventure/Family - Chapters: 11 - Words: 106,279 - Reviews: 15 - Favs: 4 - Follows: 3 - Updated: 4/25 - Published: 3/31 - Ash K./Satoshi, Pikachu, Zoroark, Iris
Wrath Of A Fallen Hero by Mace sheperd reviews
Heroes let villains get away with an awful lot. But what if a villain were to push a hero too far? When Albedo pushes Ben Tennyson past his breaking point all villains will feel the wrath of a fallen hero.
Crossover - Ben 10 & Kuroinu: Kedakaki Seijo wa Hakudaku ni Somaru - Rated: M - English - Sci-Fi/Romance - Chapters: 6 - Words: 49,492 - Reviews: 33 - Favs: 77 - Follows: 86 - Updated: 4/25 - Published: 3/9
Ultimate Alien: Primarch Force by Pravus666 reviews
What happens when in a Hail Mary to destroy Vilgax in their final battle, that Ben is sent hurtling across space-time throughout the Omniverse; and finds himself not only in a different one entirely...but 30,000 years in the future...Well, strap in as Ben enters into the Great Crusade and battles against the Ruinous Powers. Rated M for Mature Themes and Violence.
Crossover - Warhammer & Ben 10 - Rated: M - English - Sci-Fi/Adventure - Chapters: 8 - Words: 75,798 - Reviews: 68 - Favs: 136 - Follows: 150 - Updated: 4/24 - Published: 3/16 - Primarch/s, Ben T., Gwen T.
Infinity Crisis: Fall of Earth 3 by Sentinel of Stories reviews
As the Anti-matter wave approaches, the heroes of Earth 3 band together to make a desperate final stand against their seemingly inevitable end.
Crossover - Flash & Ben 10 - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 6,290 - Reviews: 7 - Favs: 11 - Follows: 10 - Updated: 4/24 - Published: 1/10 - Jay G./The Flash, Patty S., Max T., Rook
My Alien Academia by Maxwell182003
Benjamin Kirby Tennyson was just your average quirkless boy. That is, until his life changed forever.
Crossover - My Hero Academia/僕のヒーローアカデミア & Ben 10 - Rated: M - English - Chapters: 1 - Words: 4,640 - Favs: 7 - Follows: 7 - Published: 4/24
The Invincible Omnigirl! by Vgn Golley reviews
Marceline 'Marcy' Grayson is a Viltrumite/Human Hybrid who was born from Nolan and Debbie Grayson and grew up to be a kind and innocent girl who wants to do some good in the world and then comes across the Omnitrix, a mysterious alien watch with the power to allow her to transform into a multitude of aliens. Watch out, world, because when lives are on the line, It's Hero Time!
Crossover - Ben 10 & Invincible - Rated: M - English - Adventure/Sci-Fi - Chapters: 2 - Words: 50,000 - Reviews: 18 - Favs: 43 - Follows: 30 - Updated: 4/24 - Published: 3/20 - Charmcaster/Hope, Mike M., Cooper D., OC
The Omni-Rose Huntress - Ruby Rose by Kaizerthewriter reviews
The Omnitrix, a weapon capable of the either intergalactic peace or massive universal destruction. In one universe, the prototype was created by Azmuth of the Galvan and landed in the hands of a young Benjamin Tennyson. But in this universe (this story), not only was it created by another alien, but it also landed in the hands of a more... simple soul. (Rated M just in case)
Crossover - Ben 10 & RWBY - Rated: M - English - Adventure/Sci-Fi - Chapters: 5 - Words: 36,922 - Reviews: 25 - Favs: 76 - Follows: 91 - Updated: 4/24 - Published: 8/24/2022 - Ozpin, J. Ironwood, Team RWBY, Team JNPR
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: 22 - Words: 300,776 - Reviews: 1235 - Favs: 1,467 - Follows: 1,434 - Updated: 4/23 - Published: 12/5/2021 - Ben T., Erza S.
Imp 10 by VilScreen reviews
Ren was just an average Imp who worked as a garbage collector, nothing too special. Well that was until a strange metal object came crashing down which housed a device that gave Ren superpowers! With his newfound powers, what challenges await Ren as he battles against foes from space, Hell itself or even Earth?
Crossover - Ben 10 & Hazbin Hotel - Rated: M - English - Adventure/Sci-Fi - Chapters: 1 - Words: 4,546 - Reviews: 3 - Favs: 15 - Follows: 16 - Published: 4/23 - OC, Octavia
Omni-Titan by SJMS09 reviews
After defeating Vilgax once and for all, Ben finds himself transported to another universe that is full of giant man-eating monsters known as Titans, and on top of that, Ben is 10 years old and has old omnitrix again
Crossover - Ben 10 & Attack on Titan/進撃の巨人 - Rated: M - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 26,130 - Reviews: 8 - Favs: 22 - Follows: 26 - Updated: 4/23 - Published: 4/1 - Ben T., Eren Y., Mikasa A.
Something Alien in Remnant by PhantomPilgrim reviews
After a skirmish and a malfunction with Vilgax and Albedo in an Alternate Timeline; Jason Moss was thrown from his own time and space and into a new world altogether Jason must now try and find a way back home; using the Omnitrix thrust upon him by his teacher and whatever he could find in a world of Grimm, Huntsman and teenagers with superpowers
Crossover - Ben 10 & RWBY - Rated: T - English - Chapters: 8 - Words: 34,291 - Reviews: 17 - Favs: 31 - Follows: 32 - Updated: 4/21 - Published: 10/9/2023 - OC, Ruby R., Weiss S., Blake B.
Ben 10 : power of the primes (remastered) by WindWindwakerwakerwind reviews
When the hero of heroes is sent to the prime dimension via Professor Paradox for an adventure the war between Decepticons and the Autobots gets rocked to its very core and just who is this Annalise girl and why is she important
Crossover - Transformers/Beast Wars & Ben 10 - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 2,680 - Reviews: 6 - Favs: 17 - Follows: 17 - Updated: 4/21 - Published: 7/11/2023 - Red Alert, OC, Ben T., Rook
Ben 10 Fairy Tail by JerryAwesome24 reviews
Ben Tennyson gets sent to the world of Fairy Tail where he meets the Fairy Tail wizards. He joins the Fairy Tail Guild and forms bonds with his new friends and teammates and will have many new challenges with them. BenxHarem
Crossover - Ben 10 & Fairy Tail - Rated: T - English - Sci-Fi/Fantasy - Chapters: 13 - Words: 97,474 - Reviews: 35 - Favs: 110 - Follows: 114 - Updated: 4/21 - Published: 11/14/2022 - Ben T., Erza S., Lucy H., Natsu D.
Shapeshifter of Kuoh (Original - Reupload) by Bakuganman reviews
Due to a mishap, Ben is sent to a world closely mirroring his own; only with angels, devils, fallen angels and Yokai hiding in plain sight from the rest of the world. Having been thrust into a world full of mythological beings from one full of alien beings, how will our favorite hero deal with it? (NOT MY FIC. ARCHIVED FROM OMNISAURUS)
Crossover - Ben 10 & High School DxD/ハイスクールD×D - Rated: T - English - Chapters: 9 - Words: 41,980 - Reviews: 44 - Favs: 116 - Follows: 136 - Updated: 4/20 - Published: 6/11/2022 - Complete
Shapeshifter of Kuoh by Bakuganman reviews
Due to a mishap, Ben is sent to a world closely mirroring his own; only with angels, devils, fallen angels and Yokai hiding in plain sight from the rest of the world. Having been thrust into a world full of mythological beings from one full of alien beings, how will our favorite hero deal with it? (Adopted from Omnisaurus)
Crossover - Ben 10 & High School DxD/ハイスクールD×D - Rated: T - English - Chapters: 5 - Words: 5,968 - Reviews: 39 - Favs: 119 - Follows: 134 - Updated: 4/20 - Published: 3/9/2022
Ben10 and a Vampire Capu3 (T-Rated - Clean Version) by Bakuganman reviews
(DISCLAIMER: I don't own Ben10 or Rosario Vampire, just this story) Same American hero, same monster girls, new wacky adventures. Continuation of Ben10 and a Vampire Capu2. (DISCONTINUED - due to lack of views. Main version is still going strong, so don't worry)
Crossover - Ben 10 & Rosario + Vampire - Rated: T - English - Chapters: 18 - Words: 73,251 - Reviews: 19 - Favs: 35 - Follows: 23 - Updated: 4/20 - Published: 6/13/2018 - Complete
Ben10 and a Vampire Capu3 by Bakuganman reviews
(DISCLAIMER: I don't own Ben10 or Rosario Vampire, just this story) Same American hero, same monster girls, new wacky adventures. Continuation of Ben10 and a Vampire Capu2.
Crossover - Ben 10 & Rosario + Vampire - Rated: T - English - Chapters: 31 - Words: 149,615 - Reviews: 176 - Favs: 170 - Follows: 164 - Updated: 4/20 - Published: 2/4/2018
Ben10 and a Vampire Capu2 (Rewrite) by Bakuganman reviews
(DISCLAIMER: I don't own Ben10 or Rosario Vampire, just this story) Another year is beginning at Yokai Academy with everyones favorite monster harem and American hero! New aliens, new adventures and of course, new enemies. What's more, Ben's newest (and only) monster transformation has a mind of its own! Can Ben survive another year, even with Gwen and Kevin backing him up?
Crossover - Ben 10 & Rosario + Vampire - Rated: T - English - Chapters: 21 - Words: 165,612 - Reviews: 52 - Favs: 131 - Follows: 129 - Updated: 4/20 - Published: 11/14/2019
Ben10 and a Vampire Capu2 by Bakuganman reviews
(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?
Crossover - Ben 10 & Rosario + Vampire - Rated: T - English - Chapters: 36 - Words: 138,409 - Reviews: 257 - Favs: 229 - Follows: 195 - Updated: 4/20 - Published: 6/27/2017 - Complete
Ben10 and a Vampire (Rewrite) by Bakuganman reviews
(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)
Crossover - Ben 10 & Rosario + Vampire - Rated: T - English - Chapters: 16 - Words: 84,444 - Reviews: 62 - Favs: 205 - Follows: 166 - Updated: 4/20 - Published: 12/22/2018 - Complete
Ben10 and a Vampire by Bakuganman reviews
(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?
Crossover - Ben 10 & Rosario + Vampire - Rated: T - English - Chapters: 17 - Words: 76,281 - Reviews: 130 - Favs: 238 - Follows: 188 - Updated: 4/20 - Published: 5/22/2017 - Complete
Fate Stay Night: A Hero's Path (REMAKE) by Seanathan311 reviews
When Ben Tennyson visits Fuyuki on a trip for Extra credits and some downtime, he finds himself locked into a bloody battle for a Wish-Granting Grail. With no other choice, Ben shall use the power of the Ultimatrix and newfound allies to put an end to the battle and uncover the truth of the Holy Grail War of Fuyuki.
Crossover - Ben 10 & Fate/stay night - Rated: M - English - Fantasy/Adventure - Chapters: 8 - Words: 76,454 - Reviews: 50 - Favs: 176 - Follows: 201 - Updated: 4/18 - Published: 8/7/2023 - [Ben T., Caster] [Shirō E., Saber]
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: 18 - Words: 133,376 - Reviews: 30 - Favs: 16 - Follows: 13 - Updated: 4/18 - Published: 12/7/2023
Fairies in a world of Aliens by diamondholder reviews
this is what i think would happen if some of the strongest members of Fairy tail would be thrown into the events of ultimate alien and omniverse. main pairings will be BenXMirajane, KevinXLisanna, and GwenXNatsu rated m for later chapters.
Crossover - Ben 10 & Fairy Tail - Rated: T - English - Romance/Adventure - Chapters: 34 - Words: 172,354 - Reviews: 56 - Favs: 92 - Follows: 85 - Updated: 4/18 - Published: 11/22/2017
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