It's been five years since he acquired the most powerful device in the universe and 1 year since he saved the universe a second time. Even with all that he has accomplished he still wants to save his world and everyone in it. Who knew just taking a job would bring him to his goal. But even so he is still haunted by the scars from his past but unlike before he will never be alone.

Ben 10 goes to another universe to meet the superhero girls, as well as other heroes throughout the multiverse

Ben Tennyson gets sent to the world of My Hero Academia. Where is a world full of heroes and not everyone can be a hero. He enrolled in U.A High the number one hero school in the world. Many challenges will be ahead of him. He have to Go BEYOND! PLUS ULTRA! BenxHarem.

Earth as we know it today felt like they could expect anything. They had Heroes with powerful Quirks, technology that benefited them greatly and a society that wouldn't crumble to pieces easily. What's there to worry about? How about Villians hellbent on world domination, a few secret organizations and Aliens from Space? Lucky for the Earth it has it's own protectors just for them!

Ever thought of Zenkichi ending up with the Alien Watch instead? (I Own Nothing)

A battle with Albedo ends with an unexpected outcome; one where he and Ben are transported to an alternate reality where demons and angels are real. While searching for a way to return home, he eventually crosses paths with a boy named Jio, and in spite of their differences, they choose to aid each other. What does the future hold in store for them and will they even survive it...?

Ben is transported to the world of Teyvat because he severely underestimated a technology that belonged to Dr. Psychobos. What sort of adventures would be in store for the extraterrestrial hero in this strange new world?

Green Lantern and Midnight Hope come across a phantom moth creature around both Coast City and Bellwood causing some small mayhem. Will they get to the bottom of it on their own? Or will they require some help? Collaborated with Alvaxerox.

After the battle with Maltruant,Ben Tennyson vanished in the big bang and he got sent to the planet of Bluegarden into the other side of his universe. The omnitrix bearer must now team up with the Crew of Edens in order to find a way home. But with all the dangers and villains in his way, will he be able to return home safely or will he die trying? *CANCELLED/ABANDONED

[An OC Kamen Rider fanfiction created using Ben 10 elements.] Hiroki Tennyson, a lone wanderer in a world plagued by a zombie virus, has been chosen by Eunice to protect humanity as Kamen Rider Alterum. As he and Eunice proceed with their journey, they uncovers the secrets of the world resulting from the apocalypse and all the crisis that started ten years ago.

When he was 11,Ben removed the Omnitrix to live a normal life. Now at 15, a new enemy threatens that. For his own safety, Ben is sent to Karakura Town to live with the Kurosaki family. But when Ichigo becomes entangled with the supernatural,Ben puts the Omnitrix back on. Together, they vow to protect those dearest to them, and those who can't protect themselves.

Omniverse/Tamers; sequel to Heroes and Humanity. A little galvan named Albedo is back, and he has a couple of problems: Ben Tennyson is trying to kill him, no one will let him leave this silly planet to get away from him, and everyone in Japan is angry with him. Why did Fridge, Swamps and Hugh think moving him back to West Shinjuku was a good idea?

A dedicated One shot story that will involve characters from Ben 10 interacting with Characters from across different mediums of fiction in unique scenarios. Vs, SOL, Ships, Story Concepts, Suggestions,the list goes on. It promises to be a fun ride!

Ben gets transported to the world of Soul Eater where he meets the Soul Eater cast. He decides to help them fight the Kishin and Witches until he finds a way home. BenxHarem. Adopted by Rexfan1333

He was supposed to return back home. After helping Rex Salazar to defeat Alpha, Ben manages to put him in the Null Void but instead of ending up in Bellwood,he ends up in an alternate reality where humanity is at the brink of extinction. Perhaps with his presence,they can forge a better future for themselves.

Om-inficent (adj): Unlimited in creative power; Jen Tennyson thought her family were the only heroes in the Omniverse, but not until she's thrown into the Quirkverse where other heroes need her the most.

A fierce battle with Charmcaster causes Ben and Rook to be sent to an alternate reality; The Clover Kingdom. In their quest to find Charmcaster and return home, they'll come across new foes, but also form new allies as well; The Black Bulls

While fighting both Kevin and Vilgax at Niagara Falls both them and Ben get sucked into a portal created by the Null Void projector. Only it’s not the Null Void they land. They land in a world where Superheroes are just a bunch of corporate puppets and think they can do whatever they want. But no it’s a real Hero’s Time.

At a young age of 10, young Izuku Midoriya and his friends goes camping with their families for the summer vacation, until it went south really fast. Finding a alien watch with secrets hiden in it he must choose to use it wisely as a vigilante and being a target of a evil warlord that looks like a tentacle hentai monster. Now follow the origins of the greatest hero Izuku 10.

Lincoln had run away from home for about four months and had been on his own since. Until one night, he meets the Tennysons and a watch that turns him into ten different aliens. Now he has become something that never thought possible he'd become a superhero. (Got the idea from Overlord159)

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.

Ben Tennyson gets sent to the world of Fairy Tail where he meets the Fairy Tail wizards. He joins the Fairy Tail Guild and forms bonds with his new friends and teammates and will have many new challenges with them. BenxHarem

After the road trip at the end of Omniverse, Ben gets a mission that will change his life forever, AU Harem Story.

An American exchange student has moved to Japan to reach his dream of becoming a hero. To reach this goal, he will enter the greatest hero academy the world has ever known: "U.A. High." He will reach his goal, no matter what stands in his way. Doesn't matter if they have tentacles, armor, or the power to destroy whatever they touch, they can't stop him from becoming a hero!

when ben was fighting hex to stop him from gaining eternal youth he and an unlikely person got teleported to an another universe, now stuck in an different world with magic all around without any support ben needs to survive i mean how hard it could get for an kid to survive in an world where people can eat fire, iron, air, not to mention every world has its own bad guy to beat up.