Grandpamax Stories

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...

Invited to join a summer vacation with Max, Gwen, and your childhood friend Ben, you expect a normal, relaxing trip. That is until a meteor falls from the sky and gives...

Join Aria, Ben, Gwen and Kevin on an adventure.

After spending 6 years of being in love with her best friend, Ben Tennyson. Jenny had finally won his heart and were happily dating. Right when they thought they were l...

Nova is an alien, a hybrid to be precise. She always knew of her alien heritage. who knew after meeting Ben would there be countless adventures, battles, an intergalacti...

Kamari Davis is the best friend and big brother figure of Ben Tennyson, he's there when they go on their trip and he's there when Ben gets the Omnitrix. But at the same...

What if in this alternative timeline Ben had a friend named Y/N that also had family in the plumbers. What if he already knew about grandpa Max's secret and the omnitrix...

When the speedy twins meet ben 10 they steal a piece of his omnitrix to use on their flashcar which makes Ben's omnitrix go haywire which effects the pj masks which give...

Y/N L/N just finished his current year at school and was ready to embark on a relaxing summer vacation! That is however, until fate came from the sky. Now with a device...

Ben Tennyson's identity is revealed to the public. A new alien threat emerges and Aria's past comes to haunt her.

In this story I'm aging the people of a certain scientific railgun by 1 year. But touma, index, motoharu, and other characters in toumas class are the same age as before...

about a boy name Ken with a Chaquetrix that can summons female characters to help him and have interest in him as he, his cousin and Grandpa goes into summer road trip...

No Description, because I don't wanna Spoil much

Azmyth made a second watch after the creation of the Omnitrix. You are a girl thats on her own, what happens when you team up with Ben Tennyson and Rook Blonko? Read to...

"The multiverse is home to great heroes and fascinating stories, but that's not our topic today. I'm assuming you're already familiar with the story of Ben Tennyson...

"Del! Hurry up Granpa's here!" "Ben, Drag me next time and I'll take your Sumo Slammers Card collection. Again" Join Ben, Del, Gwen and Max Tennison...

Y/n Parker lived a normal life in the city of Bellwood. He had a nice caring family and would hang out with his troublesome best friend Ben. But that all changed during...

What if there were two Omnitrixes? And what if Ben had a twin sister? This is a story about Ben and his twin sister, Jen and about how they got the Omnitrixes. This stor...

Raymond Tennyson is Ben Tennysons little brother (by five months). He joins Ben on a summer camping trip with their grandpa and cousin. After his brother finds a device...

Legends are everywhere and anywhere. They can be anyone or anything, but what if that legend wasn't alone. In the OG timeline Ben was an only child, but what if this tim...