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Amalgamation: The Huntsmen Arcana by epic insanity666
One world falling to ruin, hope lost with the death of the Phantom thieves, Ren Amamiya is given a chance to right the wrong sof a fake god, but he won't do it alone, for a Huntsmen will be the Sword and shield of the Phantom thieves of Hearts
Crossover - Ben 10 & Persona Series - Rated: M - English - Adventure/Supernatural - Chapters: 4 - Words: 5,079 - Favs: 8 - Follows: 8 - Updated: 4h - Published: 7/17 - [Akira K./Ren A., Ann T./Panther] [OC, Sae N.]
Devils & The Alien by Celestial Watcher reviews
Ben Tennyson, wielder of the omnitrix and savior of the universe has to finish his last two years of high school at a place called Kuoh Academy in Japan. No one there knows who he is or that aliens exist, there also happens to be a group of Devils who's leader has taken an interest in Ben
Crossover - Ben 10 & High School DxD/ハイスクールD×D - Rated: M - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 6,308 - Reviews: 2 - Favs: 5 - Follows: 7 - Published: 7h - Ben T., H. Issei, Xenovia, Rias G.
Ben 10 Switch On by CMXB reviews
A new Fourze has arrived at the world of Ben 10 with a mission to be a new hero of the universe while befriending anyone he meets, what adventures will he do only time will tell now, Uchu Kita.
Crossover - Ben 10 & Kamen Rider - Rated: T - English - Adventure/Sci-Fi - Chapters: 35 - Words: 55,380 - Reviews: 206 - Favs: 162 - Follows: 145 - Updated: 17h - Published: 12/22/2019 - [Julie Y., OC] Gentaro K./Fourze
Ben 10 meets dc superhero girls part 1 by skipper.weinkauf reviews
Ben 10 goes to another universe to meet the superhero girls, as well as other heroes throughout the multiverse
Crossover - DC Super Hero Girls & Ben 10 - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 14 - Words: 55,916 - Reviews: 25 - Favs: 25 - Follows: 28 - Updated: 17h - Published: 2/20 - Ben T., Kara K./Supergirl, Wonder Woman, Rook
Ben 10: Marvellous Moments by I craft experiences reviews
A series of oneshots focusing on the daily lives of Ben and the Avengers, with all the drama and misadventures that ensue. Also serves as a spinoff series based on the "Age of Marvels" Universe.
Crossover - Ben 10 & Avengers - Rated: T - English - Adventure/Humor - Chapters: 5 - Words: 47,646 - Reviews: 47 - Favs: 70 - Follows: 64 - Updated: 7/25 - Published: 5/23 - Ben T., Black Widow/Natasha R., Captain America/Steve R., Hulk/Bruce B.
Avenging by Celestial Watcher reviews
Young Ben Tennyson experienced a great loss and tried to escape the life of a hero only to end up being sent to a universe full of heroes. There Ben will have to make a choice, will he return to being a hero or will he give up all together?
Crossover - Ben 10 & Avengers: Earth's Mightiest Heroes - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 19,716 - Reviews: 17 - Favs: 35 - Follows: 30 - Updated: 7/25 - Published: 7/10 - Ben T., Iron Man, Hulk, Thor
Izuku's Omnitrix by chloedi reviews
When Ben dies, the omnitrix finds itself a new host in the form of 14-year-old Izuku Midoriya. Will Izuku rise to the challenge, or will it all fall apart?
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Sci-Fi - Chapters: 10 - Words: 10,242 - Reviews: 10 - Favs: 37 - Follows: 40 - Updated: 7/24 - Published: 6/27 - Izuku M., Ochako U., Kyoka Jiro, Eijiro Kirishima
Omniversal War by bbreader20 reviews
When Ben Tennyson get transported into another world, he will need to team up with Anne and her friends to stop Andrias from conquering the Multiverse.
Crossover - Amphibia & Ben 10 - Rated: K+ - English - Adventure/Friendship - Chapters: 12 - Words: 55,675 - Reviews: 28 - Favs: 28 - Follows: 19 - Updated: 7/24 - Published: 4/29 - Ben T., Anne, Sprig, Sasha
Priestess 10 by SilverSoulmmc reviews
It's been a couple of months since Yu Narukami and The Investigation Team solved the case and returned peace to their town of Inaba. Yukiko Amagi was looking forward to spending the upcoming summer with her friends however it seemed that her parents had other plans for her, plans that involved sending her to America for a Summer Road Trip with relatives she's only recently heard of
Crossover - Ben 10 & Persona Series - Rated: T - English - Family/Adventure - Chapters: 39 - Words: 190,526 - Reviews: 165 - Favs: 133 - Follows: 143 - Updated: 7/24 - Published: 8/17/2021 - Ben T., Gwen T., Max T., Yukiko A.
Ten Times The Hero by Hornets88 reviews
Izuku Midoriya is about to give up on his dreams of heroism when a teenager clad in a green jacket and a man claiming to be a professor break into his room in broad daylight. Ben Tennyson and Professor Paradox have travelled to the My Hero universe in order to find a worthy successor to wield the Omnitrix once Ben passes... and they firmly believe Izuku is worthy to inherit it.
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Sci-Fi/Adventure - Chapters: 19 - Words: 136,562 - Reviews: 132 - Favs: 346 - Follows: 447 - Updated: 7/24 - Published: 9/28/2021 - [Izuku M., Kyoka Jiro] Toshinori Y./All Might, 1-A Students
Leonardo Voorhees: Alien Chronicles by Pravus666 reviews
What happens when a 12-year-old Harry is given the Ultimatrix and given the chance to become something greater? Well this is that story, as we follow his misadventures in the world and the worlds beyond, with a legion ready to take on anyone. Rated M for Blood, Violence, Gore, and Mature Themes. Ultimatrix Harry AU. Harry X ?
Crossover - Harry Potter & Ben 10 - Rated: M - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 26,359 - Reviews: 21 - Favs: 56 - Follows: 74 - Updated: 7/24 - Published: 6/29 - Harry P., Voldemort, OC, Charmcaster/Hope
Omniverse Ponies After people by jboy44 reviews
One twist of Fate, change the world. Most of humanity is gone, Most of those that remain changed. My name is Ben Tennyson. I am not longer human, and I don't feel like a hero anymore. Yet I think I need to be one more then ever, In the world of ponies after people.
Crossover - My Little Pony & Ben 10 - Rated: M - English - Supernatural/Adventure - Chapters: 16 - Words: 16,816 - Reviews: 36 - Favs: 6 - Follows: 8 - Updated: 7/24 - Published: 6/24 - [Ben T., OC] Button Mash
The Unidentified Lifeform by Chris Chronos reviews
A Comedy/action crossover story featuring Ben Tennyson as an underground hero in Saitama's world. Comedic events happen around our protagonist as he struggles to mind his own business and achieve peace and quiet. Following his own ideals, will he be able to pull it off as a hero, too?
Crossover - Ben 10 & One Punch Man/ワンパンマン - Rated: T - English - Humor/Sci-Fi - Chapters: 12 - Words: 108,114 - Reviews: 50 - Favs: 33 - Follows: 39 - Updated: 7/24 - Published: 6/18 - Ben T., Genos, OC
Amalgamation Hope of Eostia by epic insanity666 reviews
After the war against Sosuke Aizen and returning home, the reprieve was short lived for Kenneth Tennyson as he has been called to the Sorcerer Surpeme herself to aid another world with the absence of Klarion the WitchBoy Heads will roll. violent and sexual acts inside
Crossover - Ben 10 & Kuroinu: Kedakaki Seijo wa Hakudaku ni Somaru - Rated: M - English - Adventure/Supernatural - Chapters: 13 - Words: 19,814 - Reviews: 12 - Favs: 21 - Follows: 22 - Updated: 7/24 - Published: 6/25 - OC, Origa D - Complete
Corrupt World by Celestial Watcher reviews
Young Ben Tennyson finds himself falling into a universe that is overrun with corruption and evil. The laws of this land are kill or be killed, Ben's morales will be put to the test as this corrupt world throws everything it has at him.
Crossover - Ben 10 & Akame ga Kiru/アカメが斬る - Rated: M - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 8,181 - Reviews: 5 - Favs: 10 - Follows: 9 - Updated: 7/24 - Published: 7/17 - Ben T., Akame, Tatsumi, OC
A Marvel Dragon Ball: Alien League by ALPHA02FURY97 reviews
Benjamin Tennyson just saved the world from The High Breed and he thought it would be best to celebrate their victory in Las Vegas. Unexpectedly Ben and Julie got involved in a three way marriage after meeting a certain Farm girl from Smallville.
Crossover - Ben 10 & Justice League Unlimited - Rated: M - English - Adventure/Sci-Fi - Chapters: 7 - Words: 35,106 - Reviews: 2 - Favs: 3 - Follows: 2 - Updated: 7/23 - Published: 7/22
Gwen Wolf: Lycan Pack by Stone-Man85
On the summer of Gwen's 16th year, her life was changed forever, when she and her friends go on a road trip across America. Though it got stranger when she wandered from camp and got attacked by a strange animal. Now Gwen's life is forever changed along with her friends as she tries to come with enemies, as well as this new life. Rated M for nudity and lemons
Crossover - Goosebumps & Ben 10 - Rated: M - English - Sci-Fi/Adventure - Chapters: 1 - Words: 285 - Favs: 3 - Follows: 2 - Published: 7/23 - Gwen T., Julie Y., Kai Green, OC
Ben 10: Prime Force by Mana Rider reviews
Ben, Gwen, & Kevin get sucked into another universe. While there they get mixed up in an eon long war between sentient, transforming machines from a strange mechanical planet. Will they join the Autobots and help them save the world from the Decepticons, MECH, and a long-time enemy of Ben's? Pairing: Ben X Arcee. Adopted from Ultimate 10.
Crossover - Transformers/Beast Wars & Ben 10 - Rated: T - English - Sci-Fi/Adventure - Chapters: 17 - Words: 146,779 - Reviews: 323 - Favs: 632 - Follows: 649 - Updated: 7/23 - Published: 12/31/2018
Rise of G-Morph and The Amazing Spider-Man by Amit Barabi reviews
Gwen Stacy is chosen to become the successor of Ben Tennyson. Read and enjoy her origin as the heroine, G-Morph, and her ever-growing adventure with her arachnoid boyfriend. Mainly based on The Amazing Spider-Man movies and the MCU but has some original ideas. Peter and Gwen pairing. Inspired by The Incredible Muffin. Originally titled "Wristed Heroes"
Crossover - Spider-Man & Ben 10 - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 44,911 - Reviews: 19 - Favs: 42 - Follows: 46 - Updated: 7/23 - Published: 8/13/2020 - [Peter P./Spider-Man, Gwen S.] Eunice
Just Another Day at the Office by Darthkvzn
Spectre-turned-bounty hunter (and unwilling interdimensional traveler) Jane Shepard arrives at her base of operations on Knowhere to embark on a mission to this dimension's version of Earth - one that could help her find her way back to the universe she was ripped from... (F!Shepard, multicrossover, part of the Kryptonverse series!)
Crossover - Ben 10 & Mass Effect - Rated: T - English - Adventure - Chapters: 2 - Words: 5,146 - Favs: 13 - Follows: 9 - Updated: 7/22 - Published: 6/25 - EDI, Shepard
Ben 10 True Omniverse Season 4 by Power Master reviews
ARC 4: Cyberverse Adventure - After discovering that she's actually a Cybertronian, Julie and her team embarked on the quest to seek out the lost robotic civilization for answer behind her origins. However, they soon find themselves caught in the war between three factions - Autobots, Decepticons and Quintessa's. Which faction Team Ben should allied and join?
Crossover - Ben 10 & Transformers/Beast Wars - Rated: T - English - Sci-Fi/Adventure - Chapters: 13 - Words: 325,164 - Reviews: 22 - Favs: 58 - Follows: 55 - Updated: 7/22 - Published: 1/23/2021 - [Julie Y., Ben T.] Optimus Prime, The Quintessons
DRAGON BALL OMNI JUSTICE SUPER Z by ALPHA02FURY97 reviews
Benjamin Tennyson just saved the world from The High Breed and he thought it would be best to celebrate their victory in Las Vegas. Unexpectedly Ben and Julie got involved in a three way marriage after meeting a certain Farm girl from Smallville.
Crossover - Justice League Unlimited & Ben 10 - Rated: M - English - Sci-Fi/Fantasy - Chapters: 16 - Words: 72,832 - Reviews: 39 - Favs: 24 - Follows: 25 - Updated: 7/22 - Published: 6/28 - Supergirl/Kara Kent/Kara In-Ze, Ben T., Julie Y.
Ben 10 & She-Ra Heroes of Power by Hero Central reviews
An investigation into space time anomalies lands Ben Tennyson and his partner Rook Blonko on the mysterious and magical planet of Etheria, they cross paths with Adora and her friends and choose to do what they can to free Etheria from the tyrannical grip of the Horde. Its Hero time,For the Honour of Greyskull!
Crossover - Ben 10 & She-Ra and the Princesses of Power - Rated: T - English - Friendship/Supernatural - Chapters: 20 - Words: 292,217 - Reviews: 411 - Favs: 292 - Follows: 294 - Updated: 7/22 - Published: 10/18/2020 - Ben T., Rook, Adora/She-Ra, Princess Glimmer
Heroes Never Die It's Hero Time, Anytime by CreateGunner1209 reviews
This is a side-story that is connected to my actual story "Heroes Never Die; It's Hero Time" where Izuku has the Omnitrix. So reading the main story is necessary to understand this collection of Omakes/OVAs. I aim to post an Omake/OVA every Friday when I am unable to post a chapter for the main story. Full summary, explanation, and guid lines for suggestions are inside.
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Humor - Chapters: 35 - Words: 85,454 - Reviews: 323 - Favs: 147 - Follows: 152 - Updated: 7/22 - Published: 8/11/2021 - Izuku M., Ochako U., 1-A Students
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: 44 - Words: 600,866 - Reviews: 783 - Favs: 434 - Follows: 404 - Updated: 7/22 - Published: 4/4/2021 - [Ben T., Yang X.L.] Gwen T., Ruby R.
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