Chatarou Buke

武家茶太郎, ぶっちゃけ, Bucchake
A short and afrohaired boy who is a childhood friend of Kattas. While his dueling skills are considerable when Katta was still young in Kattas first timeskip in DMVS he was overly attracted to idols and forgot how to duel. He has never won a duel throughout the visible part of the anime since then. Source: Duel Masters Wiki