Watch Ben 10: Alien X-Tinction (2021) HD Full Movie Free on solarmovie.do. Watch Ben 10: Alien X-Tinction (2021) online free. When the Tennysons are attacked by a villainous, dimension-hopping Omni-alien known only as Alien X,...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.