Good-bye bo-bobo! the final showdown
Back from his training trip (and after helping out in a carpentry lesson), Bo-bobo finally has his ultimate showdown with Captain Battleship, upon which the ducktailed warrior's sordid past and the truth of his hatred towards Bo-bobo is finally revealed! With bones flying, robots destroying and ultimate attacks from nosehairs to armadas to orange boxes showing up left and right, the two Fist of the Nosehair masters fight until one is finally standing at the end. But just when you think it's over...a new character appears at the end.!
Aired 01/05/2004EP 21 - Good-bye bo-bobo! the final showdown

Bobobo-bo Bo-bobo
Bo Bobo is a man with the incredible power of hearing the voices of hair and using his own to fight. He uses his power to fight off the Margarita Empire and all of Emperor Tsuru Tsuruiina's minions who are stealing the hair off of anyone they find to power up their emperor.
(Source: Anime News Network)