Cell killed Goku with a suicide attack, keeping him dead for 7 years until he was revived by Old Kai. Hit managed to kill Goku momentarily in a rematch that Goku set up, proving himself a threat. Jiren withstood all Goku's techniques and defeated him, only being taken out by a kamikaze attack.

While Goku might have a reputation as not only the strongest Dragon Ball character, but one of the most powerful anime characters of all time, even he isn't completely undefeated. In fact, Goku has been defeated on a number of occasions, particularly when he was younger. Adult Goku, on the other hand, has had far fewer defeats, but those times when he lost are among the most notable moments in the series specifically because of how rare they are.

Goku's losses often have some extenuating circumstances to them, explaining why he lost, but not always. Goku rarely complains about matches being unfair,...