First introduced in Dragon Ball Z, Vegito is one of the canonical, full-power Fusion forms that Goku and Vegeta have access to.
5 Dragon Ball characters who can beat Vegito easily (& 5 who never will)
Dragon Ball: Vegito's Strongest Attacks, Ranked
Dragon Ball Characters Even Stronger Than Goku
Dragon Ball Super Evolve - 5 Goku Ultra Instinct Action Figure : Video Games
If he has the same powerlevel as them and the fusion time is infinite, could Roshi beat Gogeta or Vegito Blue? : r/Dragonballsuper
Goku - Wikipedia
5 Dragon Ball characters who can beat Vegito easily (& 5 who never will)
10 Dragon Ball Characters Goku Can't Beat Yet (& 8 He Never Will)
Vegito (Mastered Ultra Instinct), Character Level Wiki
Dragon Ball Super: 5 Heroes Jiren Can Defeat (& 5 He Can't)