Ben 10 Crossovers
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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: 207 - Words: 1,563,595 - Reviews: 596 - Favs: 764 - Follows: 742 - Updated: 9/22 - Published: 12/26/2018 - [Ben T., Ruby R.] OC
The Ultimate Justice by UltraPhantom reviews
Now what if three young heroes were forced to move to one young hero's town. Well you get the Ultimates, which consists of Ben Tennyson, Kim Possible, Danny Phantom, and Jake Long. Follow as they become heroes of their own and as a team while also being asked to join the Justice League's covert ops team called Young Justice
Crossover - Ben 10 & Young Justice - Rated: T - English - Supernatural/Friendship - Chapters: 1 - Words: 4,702 - Reviews: 4 - Favs: 27 - Follows: 29 - Published: 9/21 - [Ben T., Cassie S./Wonder Girl] Gwen T., Bruce W./Batman
Ben 10: Heroic Pathstrider by Im4xsk1ll reviews
The Nameless, Trailblazers who travel around the vast cosmos via the Astral Express, saving countless others along the way, were just minding their business until a certain humongous dinosaur was right beside their train. (The art used to create the cover isn't owned by me)
Crossover - Ben 10 & Honkai: Star Rail - Rated: M - English - Adventure/Mystery - Chapters: 1 - Words: 2,674 - Reviews: 4 - Favs: 18 - Follows: 19 - Published: 9/21 - Ben T., Azmuth, Stelle, Dan Heng
To Love a Hero of the Ultimatrix by Artzilla406
zack has landed where he encounter 3 of his childhood friend but that's not all, fill with strong warriors of weapons , fighting techniques and more. Now our hero is ready to let loose
Crossover - X-overs & Ben 10 - Rated: M - English - Sci-Fi - Chapters: 4 - Words: 60,070 - Favs: 17 - Follows: 16 - Updated: 9/20 - Published: 10/7/2021 - OC
Ben 10 Ga Kill! by JerryAwesome24 reviews
Ben Tennyson finds himself in the Akame Ga Kill universe he finds out that there is a corrupted Empire, and the Prime Minister is controlling the young Emperor to control the people. So, Ben joined the assassin group Night Raid to helped them defeated the Prime Minister and bring peace in the world. BenxHarem.
Crossover - Ben 10 & Akame ga Kiru/アカメが斬る - Rated: T - English - Sci-Fi/Fantasy - Chapters: 20 - Words: 104,200 - Reviews: 73 - Favs: 126 - Follows: 119 - Updated: 9/19 - Published: 9/28/2022 - Ben T., Tatsumi, Akame, Sheele
Ben 10: Earth's Mightiest Heroes by Firestorm808 reviews
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.)
Crossover - Ben 10 & Avengers: Earth's Mightiest Heroes - Rated: T - English - Adventure/Humor - Chapters: 27 - Words: 99,546 - Reviews: 683 - Favs: 1,293 - Follows: 1,371 - Updated: 9/19 - Published: 4/21/2018 - Ben T.
The Omnitrix Bearer! by ThinkMindHunk reviews
One night, Izuku Midoriya came across a strange capsule and found something inside that would change his life and the world forever.
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: K - Esperanto - Adventure/Fantasy - Chapters: 3 - Words: 15,488 - Reviews: 1 - Favs: 12 - Follows: 14 - Updated: 9/18 - Published: 9/12 - Izuku M., Toshinori Y./All Might, 1-A Students, Inko M.
Amphibia 13! by Vgn Golley reviews
Anne and Dereck were just normal kids enjoying their average lives, until one day, they were forced by their friends to steal a musical box, and a pair of strange watches fell down from the sky as they were then transported into another world. Now watch as the kids live among the Frogs, go on adventures, and learn secrets from their Omnitrixes! Full summary in the first chapter.
Crossover - Ben 10 & Amphibia - Rated: M - English - Adventure/Sci-Fi - Chapters: 22 - Words: 325,770 - Reviews: 144 - Favs: 140 - Follows: 126 - Updated: 9/17 - Published: 6/1/2021 - [Anne, OC] Sprig, Hop Pop
Ben 10 : Game of Life Take 2 by dvock67 reviews
As if surviving against various evil versions of himself and the vicious space tyrant Vilgax wasn't enough,One day No Watch Ben Tennyson woke up realizing that he could see Titles and levels flying over his head and his entire world is shifted into a game like setting.Will he ever figure out how to use this power to become a hero like Ben Prime or he will die trying?
Crossover - Ben 10 & High School DxD/ハイスクールD×D - Rated: T - English - Chapters: 2 - Words: 10,516 - Reviews: 7 - Favs: 16 - Follows: 18 - Updated: 9/17 - Published: 9/15
Dinosaurs and Aliens by jboy44 reviews
A twist of Fate, and Max's parents were taken away, No with no family he has been adopted by the Tennyson family. Max has his dinosaurs, but his big brother has his aliens. With his new family Max is about to set out to stop prehistoric and other worldly evil, and save his birth parents from their kidnappers.
Crossover - Ben 10 & Dinosaur King - Rated: M - English - Adventure/Supernatural - Chapters: 36 - Words: 82,564 - Reviews: 103 - Favs: 26 - Follows: 23 - Updated: 9/16 - Published: 4/27 - [Ben T., OC] [Zoe D., Max T.]
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. Cover by @ZebraKnight1 on Instagram
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Adventure/Humor - Chapters: 116 - Words: 766,222 - Reviews: 162 - Favs: 231 - Follows: 213 - Updated: 9/16 - Published: 12/31/2022 - [Ochako U., Izuku M.] Ben T., Tenya I.
Justice X by G O G E T A 9 0 0 0 reviews
Following a visit from his younger self, Ben Ten Thousand reassesses his life, but before making any changes, an enemy accidentally sends him to the DCAU. The Justice League has been captured by invading Thanagarian forces. Will Ben help free their Earth? How will he adjust to this new world afterward? Original Series Timeline.
Crossover - Justice League & Ben 10 - Rated: T - English - Romance/Adventure - Chapters: 8 - Words: 70,265 - Reviews: 167 - Favs: 525 - Follows: 547 - Updated: 9/15 - Published: 3/17/2020 - [Diana of Themyscira/Wonder Woman, Ben T.]
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: 11 - Words: 107,195 - Reviews: 52 - Favs: 133 - Follows: 151 - Updated: 9/15 - Published: 3/9
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: 6 - Words: 48,205 - Reviews: 28 - Favs: 88 - Follows: 96 - Updated: 9/14 - Published: 8/24/2022 - Ozpin, J. Ironwood, Team RWBY, Team JNPR
An Osmosian Journey by Death Fury reviews
When Ben 10 recreated the Universe, he accidentally left the real Kevin in a Void. Kevin met a ROB and entered the Star Wars Universe. Join Kevin Ethan Levin as he ventures into the Galaxy Far Far Away.
Crossover - Star Wars & Ben 10 - Rated: T - English - Chapters: 4 - Words: 3,715 - Reviews: 10 - Favs: 40 - Follows: 47 - Updated: 9/13 - Published: 2/7/2023 - Kevin
Gus 12 by BlueKnight-X2 reviews
A watch-like device falls from space and attaches to Gus D. Porter and gives him the power to transform into different aliens. Now he, Luz Noeda, Willow, and others must work together to stop criminals in their summer vocation. (Lumity official)
Crossover - Ben 10 & Owl House - Rated: T - English - Adventure/Drama - Chapters: 17 - Words: 151,117 - Reviews: 43 - Favs: 17 - Follows: 13 - Updated: 9/13 - Published: 4/26/2023 - [Luz N., Amity B.] Willow, Gus
the blue hero of Hakoniwa Academy by Artzilla406 reviews
Zack orion, has arrived a place call sandbox academy, a world of something will surprise him and adapt, but what more surprise to his childhood friend medaka kurokami , Student Council president of this school
Crossover - Ben 10 & Medaka Box/めだかボックス - Rated: M - English - Adventure - Chapters: 3 - Words: 26,857 - Reviews: 1 - Favs: 14 - Follows: 12 - Updated: 9/13 - Published: 12/16/2021 - [Medaka K., OC]
Ben 10: Unbound by dvock67 reviews
Omnitrix, an awe inspiring device which allows it's user to transform into any and every species they wanted and even revive them in the face of certain death. In each and every universe , this device is wielded by a young man named Ben Tennyson except this one. However in the world cracks opened in the skies and monsters poured out of nowhere how long could he remain ordinary?
Crossover - Ben 10 & Manhwa/Korean Comics/만화 - Rated: T - English - Chapters: 1 - Words: 1,969 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 9/13
Alien Hero: Loki by MagmaKyuubi reviews
Izuku finds himself in the possession of the Omnitrix, and using the powers of the aliens within, his dreams are no longer just that. Entering Yuei Highschool, he will face numerous challenges in his journey to becoming a hero like no other. Between school life, hero training and villains, Izuku has his hands full. Slight AU, Pairings Undecided
Crossover - Ben 10 & My Hero Academia/僕のヒーローアカデミア - Rated: M - English - Adventure - Chapters: 2 - Words: 30,244 - Reviews: 10 - Favs: 42 - Follows: 50 - Updated: 9/13 - Published: 8/24 - Izuku M.
A Weird Watch In Gotham by Syncrosoul reviews
Ben Tennyson ended in the crime riddled city of Gotham. The only thing stopping Gotham from collapsing is the Dark Knight and his family. Both are heroes with differing ideologies. So what could possibly go wrong when the most paranoid man meets the most powerfull teenager?
Crossover - Batman & Ben 10 - Rated: T - English - Chapters: 4 - Words: 14,397 - Reviews: 33 - Favs: 125 - Follows: 156 - Updated: 9/11 - Published: 8/16/2023 - Bruce W./Batman, Damian W./Robin, Ben T., Prof. Paradox
Ben 10 Playtime by TopModelCollectorY2K reviews
After getting a letter saying that the employees of Playtime Co are 'still alive', Ben, Gwen and Max head to Playtime Co to get to the bottom of this. But, they soon learn that a more sinister force is at play. Ben 10 belongs to Man of Action and Cartoon Network Poppy Playtime belongs to Mob Entertainment
Crossover - Ben 10 & Poppy Playtime - Rated: M - English - Sci-Fi/Horror - Chapters: 6 - Words: 9,647 - Reviews: 9 - Favs: 22 - Follows: 21 - Updated: 9/11 - Published: 5/27 - Ben T., Gwen T., Max T., Poppy Playtime
Ben 10 Alternate Dimension Recharged by OuttaDaBlue
It's hero time! Ben and his friends have returned! Find out more about Ben's life as you read this story!
Crossover - X-overs & Ben 10 - Rated: M - English - Fantasy/Adventure - Chapters: 10 - Words: 20,308 - Favs: 1 - Follows: 1 - Updated: 9/9 - Published: 8/31 - Complete
Spooky, But Silly by GoldGuardian2418 reviews
When Ben's home alone, Phantom and his daughter Phanty visit him. What hilarious shenanigans will ensue? :) *Scooby-Doo And The Ghoul School/Ben 10 crossover* Done as a request for newbienovelistRD. :)
Crossover - Scooby Doo & Ben 10 - Rated: K+ - English - Friendship/Humor - Chapters: 1 - Words: 1,983 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 9/9 - Complete
Harry 10 by dannyrockon122 reviews
" It started when an alien device did what it did .Yeah we heard story a boy get an device that allow him to transform into alien forms. Well this isn't that story as in this one my omntrix was a toy from my favorite cartoon Ben 10 and it became real due to my magical and my life became a whole lot bizarre but I got my friends watching my back but it seem my past has came back to h
Crossover - Harry Potter & Ben 10 - Rated: T - English - Adventure - Chapters: 2 - Words: 3,809 - Reviews: 12 - Favs: 47 - Follows: 56 - Updated: 9/9 - Published: 6/3
Mass Effect Nega Ally by Mace sheperd reviews
Ben Tennyson was always a dour kid who thought everyone around him was a pain in the neck. Getting The Chaquetrix didn't change his misanthropic attitude. Now he finds himself in an alternate universe where intelligent machines are about to destroy all life, and if he doesn't want to die he'll be forced to cast his apathy aside and become a hero. NEGA BEN WITH CHAQUETRIX!
Crossover - Ben 10 & Mass Effect - Rated: M - English - Sci-Fi/Romance - Chapters: 1 - Words: 7,641 - Reviews: 1 - Favs: 8 - Follows: 8 - Published: 9/9 - Nega Ben, Jack
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