Good-bye Bo-bobo! The Final Showdown? (Japanese: さらばボーボボ!?最終鼻毛決戦!でも最終回じゃな〜い! Farewell Bo-bobo! The Final Nosehair Battle!! But This Isn't the End~!) is the twenty-first episode of the Bobobo-bo Bo-bobo anime. It was first broadcast in Japan on May 8, 2004, and in the United States on March 11, 2006.