1 - 20 of 242 Works in Omnitrix (Ben 10 Series)
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I Don't Run An Orphanage by Kyodon
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia
11 Dec 2025
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Izuku Midoriya, couldn't be a hero. But despite this, he soon finds he's a magnet for trouble, particularly trouble involving children. There a lot's of children in the city with quirks that cause issues for them and the people around them. And if their parents won't care for them then he will! It may not have been the type of hero he wanted to be. But he's a hero none the less!
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As you know there are a lot of fan made Omnitrixies these days centered around either girls: the Chaquetrix and it's 10 million takes including the Genetrix, or violence: the Carnitrix or Waritrix or both: the Charnitrix.
But what if there was a watch in the Omniverse with both and Ben still transformed?
You see, in most universes, Azmuth, the first thinker, creates the Omnitrix, the Noah's ark of the universe, a watch like device capable of scanning the DNA of any species and then turn its user into any one of those species. Ben Tennyson's fate intertwines with Omnitrix, usually by bonding with it and use its capabilities to become the universe's greatest hero or being one of the greatest ally of the one that does.
This is not that universe at all.
In this universe, Azmuth creates the Galatrix.
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Green Fire Blue Smoke by allusionmaster
Fandoms: Arcane: League of Legends (Cartoon 2021), Ben 10 Series, League of Legends
10 Dec 2025
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Ben Tennyson, also known as the Alien changing hero Ben10, get’s accidentally sent to the world of Runeterra. His presence will shake up Piltover and Zaun to the core. Perhaps, even Runeterra itself? Will Ben be able to help everyone’s favorite maniac, blue haired, gunslinger, and bomber, fight her demons? And raise her up from darkness, and despair, giving her another chance for redemption and hope?
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The Monsters From My Pocket (Indigo League) by NightwolfGamer03
Fandoms: Pocket Monsters | Pokemon (Anime 1997-2023), Ben 10 Series
10 Dec 2025
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It all started when Professor Samuel Oak stumbled upon a child. He took her in, and she made herself known as Ash.
Now, being able to transform into Pokemon using a mysterious watch (one that we know as the Omnitrix) Ash strives to be the very best, like no one ever was.
[COMMENTS AND KUDOS GIVE ME LIFE]
Series
- Part 1 of The Monsters From My Pocket: The Series
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Ben10 Monster Girl Evolution by Garrus_The_Ex_Convict_Cell
Fandoms: Ben 10 Series, Monster Girl Encyclopedia, Marvel (Comics)
10 Dec 2025
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Ben lost everything, his family, his friends even his home planet, Earth. At his lowest point he finds himself in a new world, one of monsters that love humans and religious orders trying to keep the Mamono at bay.
After having lost everything, will Ben find the strength to help others again, or will he give into despair?
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Tengo el Omnitrix que imagine estando fuera de sí... ¿Y estoy en bnha? by Alex_Skynight
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
10 Dec 2025
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Una persona cualquiera con una imaginación loca...
¿Y sí se despertará en bnha después de haberse desvelado por horas por el insomnio y en sus últimas horas terminará creando un personaje y se hubiera convertido en ese personaje?
Sigue la historia de un bnha loco. -
Re:Omniverse Zero by Dragony
Fandoms: Ben 10 Series, Re:ゼロから始める異世界生活 | Re:Zero Starting Life in Another World (Anime)
10 Dec 2025
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Ben Tennyson, héroe y defensor del Universo, es invocado a un reino maldito lejos de casa, cuando justo planeaba tomarse unas vacaciones despues de que el universo no estuviera siendo amenazado como cada semana. Sin vuelta atrás, Ben debe sobrevivir en un mundo dominado por la magia, la protección divina y los terrores sobrenaturales. Con su dispositivo en la muñeca, sera capaz de salvar a todos, o se vera abrumado por lo impio de ese mundo
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The Hero With A Million Faces by Scarlemange
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Ben 10 Series, Young Justice (Cartoon), DCU (Comics)
09 Dec 2025
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Izuku Yagi was a normal child in a world of superpowers, aliens, and super geniuses. He was one of the last people in the world without anything special about them, however not for long. Shortly after being diagnosed powerless, he was faced with an alien device granting him power like no other. From a young age, he is granted immense power and responsibility. However, that responsibility fails to completely sink in until the Musutafu incident. Being critically injured he is taken in by the creator of his alien device and is taken under his wing, as well as being used as a conduit for interplanetary peace. Years later he returns to Earth and is faced with an increase in alien threats, follow his journey filled with twists and turns. Faced with his trauma, his humanity in the face of his own power, and even love Izuku is pulled and dragged in every direction. Can he handle it? Of course, he can. After all, he is the universe's hero. You can't save multiple planets without gaining a thick skin.
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The Old Bells of Trolberg (Omnitrix AU) by Ironstone8247
Fandoms: Hilda (Cartoon), Hilda Series - Luke Pearson & Stephen Davies, Ben 10 Series
08 Dec 2025
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From what Hilda had heard, sentries along the wall had been pretty relaxed in past years, because it wasn’t really a need to be leery with troll incidents growing rarer each year. But ever since the forest fire she caused after getting the watch, she had been worried that the guards may suddenly tighten their hold on the wall, especially with Ahlberg in charge.
Breaking rules wasn’t enjoyable in itself, but what else was she supposed to do? She needed to get a hold on this situation, and it would be nice if she didn’t have to do it alone.
Now that David and Frida know about the watch, Hilda wonders about what her next steps should be. Breaking rules and hiding things weren't her most favorite things, but with her new powers and a plot from Safety Patrol afoot, she might not have much of a choice
(You don't have to know Ben 10 to enjoy this; just Hilda)
Series
- Part 5 of The Hilda Omnitrix AU
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We'll Carry On: An Ochako Omnitrix Story - Volume 1 by Transwiththeplans
Fandoms: Ben 10 Series, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, RWBY, Medaka Box
07 Dec 2025
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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.
TVTropes Link: https://tvtropes.org/pmwiki/pmwiki.php/Fanfic/WellCarryOn
Discord Link: https://discord.gg/mY2QfzMjGtChapters 1-21, 23-30: New Beginning Arc
Chapter 33-40: I-Island Arc
Chapter 45-52, 56-68: Summer Camp Arc
Chapter 75 - 79: Bakugou Rescue Arc
Chapter 80 - 100: Provisional License Arc
Chapter 101 - 124: Overhaul Arc
Chapter 125 - 133: Festival Arc
Chapter 134 - Present: Side ArcsSeries
- Part 1 of We'll Carry On: An Ochako Omnitrix Story
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Boku no Hero Alien force by Commander_Benguin010
Fandoms: Ben 10 Series, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Boku no Hero Academia | My Hero Academia: Vigilantes, ヴィジランテ | My Hero Academia: Vigilantes
07 Dec 2025
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Hello Everyone. I just want to say that when I write these stories, I write them to the best of my abilities. I have a learning disability, which make it hard to write as well. So don't expect my stories to be top tier.
Eon cause problems for Ben in a crossover of MHA x Ben 10. Ben has to face challenges that would not stop him before, old faces, new enemies and Family problems? All for one is more than a Shigaraki.
This story is another ben 10 crossover. Follow my other story Mass effect 10. I would not stress this enough to say That I do not own both series and manga. which is of course Ben 10 and My hero academia, They both belong to there respected owners. Please support the official release.
chapters 1-11 Prologue arc
chapters 13-18 sports festival arc.
Chapters 19-xx Internship arc.Series
- Part 2 of The Eon effect
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The Windmill (Omnitrix AU) by Ironstone8247
Fandoms: Hilda (Cartoon), Hilda Series - Luke Pearson & Stephen Davies, Ben 10 Series
04 Dec 2025
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The weekend after that was their next chance. The Birding Badge may not involve a camping trip on unfamiliar turf, but it still wasn’t a bad way to spend a Saturday. A few things ought to happen today; take photos of rare and diverse kinds of birds, and…gently let David know about her watch, and Frida’s witchcraft.
Of course, what complicated this further were his parents and Frida’s own being reluctant to let their children leave the city, even though the forest outside of the wall would have made for a better location. And the area they had been assigned–on the southwestern corner of Trolberg–was closer to Safety Patrol headquarters than Hilda would’ve liked. How was anyone supposed to go unnoticed in that area?
It's finally time to give David the news about the Omnitrix. But things keep getting in the way, until Hilda comes across the one person who might be able to give her a straight answer--the most wanted criminal in all of Trolberg
(You don't have to know Ben 10 to enjoy this; just Hilda)
Series
- Part 4 of The Hilda Omnitrix AU
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Ben 10, The Cycle’s End by Parker_Fox
Fandoms: Ben 10 Series, Mass Effect Trilogy, Mass Effect: Andromeda
02 Dec 2025
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Part two of my crossover thing.
Ben Tennyson found himself in the Mass Effect universe shortly before the start of the second game. Now, with the arrival of the Reapers, his influence is still felt across the galaxy.
Fic should cover the timeline of Mass Effect 3.New chapters eventually.
Series
- Part 2 of Ben 10 Mass Effect Crossover
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Twelve year old Rey Hansen was an ordinary boy until one night, during a trip in the forest, he stumbles upon the Omnitrix, a powerful alien watch allowing him to transform into 10 aliens. Together, with his friends Neil and Silvia, they fight evil whether it be from Earth or space.
Series
- Part 1 of Rey 10
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Universal Hope by WeebFanthom
Fandoms: Shingeki no Kyojin | Attack on Titan, Ben 10 Series, 進撃の巨人 | Shingeki no Kyojin | Attack on Titan (Movies)
29 Nov 2025
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It started when an alien device did what it did, and stuck itself upon his wrist with secrets that hid. Now he's got superpowers he's no ordinary kid he is...Eren Yeager?!
The boy who swore to destroy his enemies now holds the most powerful weapon in the universe: the Omnitrix. With the Omnitrix bound to him, Eren finds himself thrust into an entirely new battlefield, one filled with alien conquerors, intergalactic warlords, and threats far beyond the Walls. No longer just a soldier in humanity’s war against Titans, but a long forgotten war spanning in the universe. With the fate of not just humanity, but the entire universe at stake, Eren must decide: Will he become humanity’s greatest hero—or its greatest monster?The fate of not just the walls, but the entire universe, now rests in his hands. Eren x Harem.
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Mass Effect 10 Ben Second Chance by Commander_Benguin010
Fandoms: Mass Effect Trilogy, Ben 10 Series
29 Nov 2025
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Ben 10 world is gone and mass effects world exist, with Ben world has gone now he has to survive in this new one in order to find peace. Well he find peace, if there weren't collectors attacking colonies, Reapers invading and Cerberus being scummy. yeah peace. Ben Never gets peace, just never ending Hero time. oh and commander Shepard being the only sane one in the group. barley.
Series
- Part 1 of The Eon effect
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While on a mission to recover an artifact from a planet of dragons, an unexpected pass through a frigid void puts the life support systems into a panicked overdrive.
Trapped in a moving sauna, Ben Tennyson and Kai Green are forced to strip down to their underwear. And as the heat rises and patience thins, the "fated pair" find themselves closer than ever before.
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My Hero Academia: Heroes United: Book 1 by Phantomdanger
Fandoms: Ben 10 Series, Generator Rex, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
26 Nov 2025
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In a world transformed by an extraordinary phenomenon, 80% of the population gained superpowers known as Quirks. Society flourished with the rise of superheroes, each striving to leave their mark.
Yet, even in a world of heroes, tragedy was inevitable. Five years before the events of this story, a catastrophic explosion unleashed microscopic machines called "nanites" across the planet. These nanites infected all organic life, lying dormant until activated. Once triggered, they mutated their hosts into monstrous beings known as Exponentially Variegated Organisms (E.V.O.s)-chaotic creatures that brought terror and destruction to the world.
But even a world fill with aliens and EVOs....
Three heroes will rise.
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Alien Heart by zayrous
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Ben 10 Series
26 Nov 2025
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Izuku Midoriya, a Quirkless boy who dreams of becoming a hero, discovers the Omnitrix after a crash from the sky.
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Inspired by the Absolute Ben 10 fan comics by DuckSenile, and the original Marvel Ultimate comics, my take on the Ben 10 series if it got the original Marvel Ultimate comics treatment.
“It started when an alien device did what it did. It wrapped itself upon his hand with secrets that it hid. Now he’s got superpowers, he’s no ordinary kid. He’s Ben 10.”
During summer break, 13 year old cousins Ben and Gwen Tennyson, go with their Grandpa Max on a summerlong roadtrip across the country. During a night out on camping, Ben accidentally comes across a mysterious meteorite that contained a device which then leapt out and attached itself permanently to his hand. Armed with this unknown alien device, Ben must now unlock its secrets and learn how to control it before forces from beyond and on Earth go after him and the device.