So I basically put the omnitrix into the Mha universe so nothing from Ben 10 will be in this story except the omnitrix.

Henry gets transformed into something he despises--girls. It all started when Horrid Henry and his little brother, Perfect Peter got into an argument and Peter unknowingly made a mistake. What will Henry do when he finds out girls have many advantages over boys? What will he plan?

it's been two years Gregory had a calm life he lived his Vanessa and a head of Freddy he gets a call from his friend Jamie who liked to put himself in danger he was exploring the abandoned pizza Plex when he got trapped in the basement so Cassie, Gregory and Vanessa with Freddy head decided to go save him ....

This story gives Izuku ( a boy with no superpowers) the symbiote from insomniacs Spider-Man 2 Obviously I don't own marvel or BNHA all rights to respective owners