Ben Tennyson finds himself in an alternate version of Kamakura, Japan. Once he hears about the Diclonius and the about the queen, it's up to our favorite Omnitrix wielder to get to the bottom of it. Takes place after Ultimate Alien and right at the start of Elfen Lied. Going to mix things from both the anime and the manga. Eventuall BenxLucy

Little do people know is that there is life beyond the stars and our own planet. There are all kinds of hero's, each with different stories about how they become great. Join a teen armed with a device that holds the key to understanding all life in the universe as he joins a team of hero's to heal old wounds and make new memories. He has many names, but let's call him Omni.

A Highbreed messenger android goes off course and lands somewhere on Earth. Ben and his team track it to Jump City and meet the Teen Titans. They come across a conspiracy that rivals everything both teams have ever come across and have no choice but to team up with an old enemy if they wish to stop it. (Rated T for violence, peril, some language and many dark themes)

Ben's summer has been filled with aliens and new places. What happens when he and his family hear of aliens taking over Hawaii and meet an alien loving girl?

In an alternate timeline, Ben and Ruby work together to uncover a mysterious plot that may threaten their lives, and the planet as a whole. (Cover by Hawkguyart)

Kyle Tennyson, from the series Night I Became 10 and Kyle 10 Alien Force, finds himself in the dimension of Gurren Lagann, where both the Beastmen and Gunmen are running rampant on the surface. Will he help Team Gurren save the world? And even the heavens!

Ben, Rachel, and Sasha visit the Tickle Realm to relax, which is easier said that done after a freak accident occurs! So, Jocu, Vivo, and Kumi try to make lemons into lemonade with the situation.

In the description.

Danny was on patrol when he felt a prick on his side. Later on, he wakes up in a cell where a boy is thrown in by mysterious men in black and white uniforms. The two of them becomes friends when another boy their age enters their cell to do his job. The results was unsatisfactory for everyone. What will happen to the three boys? Updates every Tuesday and Thursday.

Two factions fighting for a cause. One wishes utopia for both monsters and men while the other wishes for the peace of humanity and humanity alone. A visitor beyond the stars has arrived. What kind of fate awaits to all of them with this newcomer? (Rated M for adult contents.)

Tom and Jerry returned back home in their original hometown, CN City along with Serena. However, the famous hero Ben Tennyson realized that she was his childhood friend 10 years ago. But, his main enemy Vligax is seeking to captured him. Will Serena / Sailor Moon can able to protect the famous hero from the evil villain?

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.

Uses 21 year old ben (5YL), and "Shadowside" is canon to this (it's just a joke thing where it's Yokai Watch Shadowside but Ben replaces touma, it literally doesn't affect anything besides allowing Ben to use the 4 genma from that) Waking up in a snowy forest, Ben meets Delta Sans and he brings him to the main conflict of Underverse 0.3

Dropped in a random Galaxy, on a random Planet, with no memory of how he got there; sixteen year old Ben Tennyson is without his Omnitrix and stranded when he's taken under the tutelage of the former Jedi, Ahsoka Tano. After the recent execution of Order 66, they're both on the run from the Empire and Darth Vader himself. Can Ben train to defend himself without his watch?

The world has been plagued by zombies, millions and more than billions of them. Ben and the Specialists try to survive and find out why and how the world ended, all the while meeting familiar foes and zombified friends and enemies.

Ben Tennyson had lost everything he had loved. But when he saved Global Response Unit XJ9 from danger, he finds himself being adopted into a new family. Can he return to a life which he thought he'd never experience again? Ben isn't sure, but he's willing to try.

During troubling times, your family will always be there for you. Written by guestsurprise. :) I only posted it for them. :)

On the Planet Yokai, Ben Tennyson arrives and is attacked by a yokai. Ben kills it before it reaches the village, but its corruption curses his right arm. The curse gives him superhuman strength, but will eventually spread through his body and kill him. He must find a cure to this curse, aided by Princess Mononoke.

Ben Tennyson's summer vacation was made a bit more exciting than he thought. Steven Universe and his family of Gems tag along. On top of that, Ben finds a device that lets him turn into 10 different aliens.

there are countless alternate timelines, in this one, Nanoha and Ben are cousins and their spending the summer on a road trip across the country, fighting off evil from earth or space and making friends with the use of maximum firepower.

After losing to the strongest hero, Garou woke into a world so alien yet so similar. Trapped inside another, he must set out with unlikely companions to uncover the secrets of his transmigration into a world where aliens fill the stars and evil from multiple timelines endanger the universe in his journey down the path of self-discovery. By the author of The Hunter Amongst Villains.

When the powerful King Detritus and his massive army invade Earth, a group of unaligned super heroes – misunderstood, discover the only way to fend off the attack will be to work together as a cohesive unit. The Blur, Omni-X, Cat Noir, American Dragon, Lucky Girl, Phantom, Ninja, and Absorbing Man combine their respective talents in an all-out battle to save the planet. YJHU:1

Jaune Arc upon being rejected to go to beacon academy with his false transcripts so after a midnight stroll almost getting killed by an asteroid but it was no asteroid at all but instead lies an alien super weapon known as the Omnimatrix, a Galactic Super Weapon far better then the omnitrix. Jaune obtained this weapon with the intent on becoming the her sought to be

Continuation of the Xrossover series, previous stories in Xrossover series include the following. 1. B10/TS 2. B10/MLB 3. B10/JLs

Ben Tennyson is spending his Summer Vacation in Paris. But upon arrival Akumas attack. So will he continue to sit on the sidelines or will he step up and wear the Omnitrix once again to save the day. REMAKE of Miraculous/Ben10 Crossover. Will try to update every Saturday