Welcome Back Hatenko Factions Made and Allies Split!? / Advancing Wildly Gadget-kun! Thrusting Away Both Enemies and Allies!!
With Hatenko returning to lead the way, Bo-bobo's team pummels through an army of Hair Hunters to find the base of the Former block leaders: an amusement park planted right on the ruins of Jelly Jiggler's old base! Furthermore, their first challenge at this park is a living bowl of ice cream who forces them to fight his team while running away from a runaway robot on an ever-changing path. But with Bo-bobo, Hatenko and Jelly (nearly) in unison, they are able to stand fast...while getting run over.
Aired 30/04/2005EP 55 - Welcome Back Hatenko Factions Made and Allies Split!? / Advancing Wildly Gadget-kun! Thrusting Away Both Enemies and Allies!!

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)