Oolong the Terrible (S01E04)

Goku and Bulma reach a village where the fifth Dragon Ball is hidden. There, Goku is mistakenly identified as Oolong, a shape-shifting monster notorious for terrorizing the locals, and he’s unexpectedly attacked by one of the villagers. In a bid to help, Bulma assures the villagers, “We’ll deal with Oolong if you hand over the Six-Star Ball.” To infiltrate the situation, Goku dresses up as a village girl, and they soon discover that the so-called monster is actually just a piglet! With the Six-Star Ball secured, Goku and Bulma welcome Oolong as a companion and continue their quest for the remaining Dragon Balls!