Ben Tennyson was suppossed to be home...not in Taisho-era Japan. A family known as the Kamados decided to take him in until he can get home but...it doesn't last. Ben and Tanjiro are both hurled into a world of demons, death and violence in an attempt to get Ben back home and defeat the one known as Kibutsuji Muzan. Will they reach the goal or die trying...?

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.)

With the Guardians of the Globe dead, a new team must be formed to take their place, however the Global Defense Agency is unsure of these new heroes so they pull out a weapon with an unbreakable will to turn these heroes into something more

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

Ben and Gwen have an unexpected summer on the other side of the world.

The famous watch wielding alien shapeshifter finds himself in a multiversal crossover dilmena. Familiar faces. New allies and foes. However, nothing is as it seems. For the hidden truths of this story will be unlike anything experienced before ... (Multi-crossover. Multiple pairings. Mainly Ben 10 x OC. Rating may become M later on.)

This is a side-story that is connected to my actual story "Heroes Never Die; It's Hero Time" where Izuku has the Omnitrix. So reading the main story is necessary to understand this collection of Omakes/OVAs. I aim to post an Omake/OVA every Friday when I am unable to post a chapter for the main story. Full summary, explanation, and guid lines for suggestions are inside.

The last time the heroes of Earth faced a collective ambush was a dark day, a day where they had to face their own mortality, and deal with the failure in the aftermath. While the world still recovers, another baleful threat looms ahead, but this time our heroes will be ready. Ben will make sure of it.

After a grave defeat, Ben loses hope in being a hero but after some unexpected circumstances, the wielder of the Omnitrix is transported to a world filled to the brim with heroes. Having to adjust to not only a new country but also going to school to be a hero Ben has plenty of challenges ahead.

Ben Tennyson was abducted by aliens when he was 10 years old after accidentally received the Omnitrix, but then got rescued by Tetrax. He also brought Rook Blonko with his side. Both Ben and Rook are orphans, where Tetrax trained them to become the Galactic Guardians. Then after reaching his teen years, he received the Ultimatrix and recruiting more members.

[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.

Ben Tennyson and his team are in for the adventure of a lifetime when Professor Paradox sends them on a mission to aid the Straw Hat Pirates in finding the legendary treasure One Piece and help Monkey D. Luffy achieve his dream of becoming the Pirate King. But, old enemies plot their return.

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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

When an alien watch falls down from the far reaches of space, Lincoln Loud acquires it and gains the ability to transform into 10 different aliens. With some help from his family, Lincoln will protect Royal Woods from common criminals, galactic warlords and many different evil villains and keep his secret from the rest of his friends.

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?

The Official Sequel to Age of Marvels, the long awaited crossover with CATWS. Two years after the events of New York, a web of conspiracies reveal dark secrets between the Plumbers and SHIELD, and an old foe resurfaces... How will these new revelations change our heroes?

Imagine if Azmuth was a Dragon. Imagine if he was one of the Dragon Gods; the Dragon God of Life. Sometime during the Great War he was sealed inside a Sacred Gear which enables whoever wields it with the power to transform into fearsome beasts of immense power. Powerful, original version of Ben Tennyson. OOC and AU. Rated M for swearing, violence and DxD nudity. [Ben x Harem]

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.

An alternate ben gets thrown into the DC then he will heed to live there and survive invasions and attacks of gods and man that could take down gods and deal with his life as well now the questions is that will he take up the omnitrix again to be a hero, can he be an hero again and save people when he himself is a bit broken. (This ben is not ben prime but alternate ben).EXPERIMENT

It's been a couple of months since Yu Narukami and The Investigation Team solved the case and returned peace to their town of Inaba. Yukiko Amagi was looking forward to spending the upcoming summer with her friends however it seemed that her parents had other plans for her, plans that involved sending her to America for a Summer Road Trip with relatives she's only recently heard of

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.

Lea expresses her new Lantern powers through music that makes a big impact. How will it go? Takes place after 'Cold Consequences' and is collaborated with Alvaxerox.

Benjamin who was a very big fan of ben 10 got reborn in marvel after his death now determined to live a fun and meaningful live but it all goes down the drain when he sees that he was in marvel now scared to death for him and family ben had lost all hope but when he get omnitrix it all changes well as much as it can change, there is not much that one person can do alone.

I looked around and saw that there were not that many ben 10 x mha with ben having the omnitrix like there were only 27 out of 100 story with just ben and in 2 of then ben didn't have omnitrix. In this ben dies of old age at 110 and is reborn in mha world, and due to certain circumstances ben will have to be a hero again, ben will help the next gen of hero in his own wayEXPERIMENT