In Dragon Ball (Dub) Episode 139, "The Anonymous Rival," Goku fights a mysterious woman in the 23rd World Martial Arts Tournament who is revealed to be Chi-Chi, daughter of the Ox-King. Despite forgetting her, Goku fulfills his childhood promise to marry her after realizing "marriage" isn't a food item, and she happily accepts in the ring. The episode highlights Goku's maturity while setting the stage for his upcoming fight against Piccolo Jr.