Paikuhan

Pikkon is the West Kai's top fighter. Having been dead for an unspecified period, Pikkon has trained tirelessly in Other World until Goku meets him at the Other World Martial Arts Tournament. Goku observes Pikkon's bout against Olibu and regards him as a worthy adversary.
Both Pikkon and Goku advance to the final round. The match remains tight until Goku identifies a flaw in Pikkon's strongest energy attack and knocks him out of the ring. However, because both combatants touched the roof during the fight, the round is declared a draw. Following this, Goku and Pikkon form a friendship, and Pikkon pledges to train as hard as possible to defeat Goku someday.
Pikkon appears again during the Buu saga. Together with Olibu, he taunts and briefly battles Kid Buu until Buu departs, drawn by Vegeta's and Goku's Ki. Pikkon also holds off Janemba until Vegeta and Goku can fuse into Gogeta in the twelfth Dragon Ball Z movie, Fusion Reborn.