Goku is from the Dragon Ball series, and appeared in the first Cute Mario Bros. movie, along with the (now removed) Super Spy Luigi episodes.
Goku is the main character of the Dragon Ball series, he is a Saiyan from the Planet Vegeta, and hero of earth, in Cute Mario Bros, he is a warrior in Mario and Luigi's team and helps them to defeat Kermit and his army, he combats Spongebob, at first Spongebob is invulnerable to Goku's blows, but Goku notices a can of Iced Tea, he grabs it and pours it on Spongebob, this hardens Spongebob and makes him vulnerable to Goku's attacks, goku then pummels Spongebob with everything he's got, finally he finishes Spongebob by dropping him hard on the ground,killing Songebob. Goku becomes the winner. Later on, he ends up fighting Bowser, but only for a short time. In the battle, Bowser blasts him away, and Goku loses. Because of this, Goku was the first opponent killed by Bowser.
It's confirmed that Goku will appear in The Blue Terror Rises(Cute Mario Bros Movie 3)
his sons are goten and gohan
his wife is chi-chi