Goku Black

An entity referring to himself as Son Goku, given the name Goku Black (ゴクウブラック, Gokū Burakku) by Future Bulma, and usually just called Black, is the main antagonist of the Future Trunks Saga of Dragon Ball Super. He appears in Future Trunks' timeline and brings humanity to near extinction in that timeline.

Power Lvl
Black Goku Saga-1,000,000,000,000,000,000,000,000