Ultimatealien Stories

Ben Tennyson gets reincarnated to a female version of himself in an alternate world.

(All credit goes to man of action and the original creators of ben 10) Kagumi, Ben Tennyson's childhood friend, receives a powerful and perfected Ultimatrix from Albedo...

Everyone's heard of the story and legend of Ben Tennyson and on how he saved the universe countless of times. But what if there was another? Another Hero. What if there...

(A rewrite of my loud house x Ben 10 crossover from my old account to this new one!) Summary: Ben fights an unknown being who causes a DNA rupture in the Ultimatrix, Sen...

This is my introduction to showcasing every roster of aliens from the Ben 10 series, from the classic original to UAF to Omniverse. What if every aliens (some who alread...

A year after rescuing his parents from the clutches of Amanda Waller and The Suicide Squad, Ben Tennyson once again finds himself running back to where he was running aw...

After the aftermath of his last great battle- he had finally gotten rid of Vilgax, his greatest ever enemy for good, but at what cost? Since that day, Ben 10, the infamo...

Jaune Arc is a natural born warrior prince with a talent of learning quickly and adapting in combat. But his father King Nicolas prevents him from being a warrior becau...

The story of a young man born quirkless in a world of heroes, who for all his life was told he could never becone a pro hero... but when he was fourteen years old he fou...

set 4 years after Gwen 10 classic. since the ending of Gwen 10 classic gwen has taken off the omnitrix, and has returned to a normal life. However when her grandpa max f...

Makoto Naegi was chosen as the Ultimate Lucky Student, though, he wouldn't really consider luck as a talent or something to be proud of and he couldn't help but feel ins...

When Ben Tennyson found the Omnitrix in the middle of the forest, his days of normality were now over. Secrets were uncovered and aliens started attacking the Earth in...

A short romantic one shot between Charmcaster and the male reader.

A young boy was saved by a God who apologize to him for his death. which was caused by the other Gods and explained why they have done it. So God is going to reincarnate...

Aisha West Jackson is Best friends with Gewn and Ben Tennyson. She met them during summer vacation when Ben found the omintrix. She also has powers like Gwen but more po...

[Ben 10 x Marvel x Nakano Quintuplets OC Crossover!] You may know Ben Tennyson aka Ben 10, right? The Omni Heroes of the multiverse, right? But what if Ben found his suc...

After a long first year of classes at UA, All Might has invited Deku and Uraraka to an early access event of the annual hero expo on I-Island where the latest in hero ge...

Ben is driving a while after the final battle in Ultimate Alien and ends up in a portal to another world. Ben doesn't get the new Omnitrix due to Azimuth not finishing i...

After defeating Vilgax the Conquerer, Izuku Midoriya continues on his journey to master the secrets of the Omnitrix and become the next No.1 hero in the world. He'll hav...