u/Classic_Vehicle3181

By destroying, I mean kill most of the human population on earth

All of os ben’s aliens scale to big tick whose durability is like high 6A. Forever king would have the sub energy. Vilgax in this situation could help ben to unlock master control (at least he states that he is “the master of the omnitrix”). Forver knights help the trio because they hate aliens and dont want to be under the rule of viltrumites. vilgax,Kevin and neg 10 help bcz of “I should rule the world not them” ideology. Ben doesnt have Way Big (or it would become a stomp)