When the Tennysons are attacked by a villainous, dimension-hopping Omni-alien known only as Alien X, they soon meet a parallel universe version of Max who opens the door to hosting multiple Bens and Gwens, forming an alien hero army to combat this threat.
Ben 10
When the Tennysons are attacked by a villainous, dimension-hopping Omni-alien known only as Alien X, they soon meet a parallel universe version of Max who opens the door to hosting multiple Bens and Gwens, forming an alien hero army to...