jonouchi katsuya
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AKA: Joey Wheeler (English dub)
Muto Yugi's best friend. Initially nothing more than a street thug and former bully, He is touched by Yuugi's behavior towards him and they become loyal friends. Yuugi's grandfather Muto Sugoroku tutors him on how to play Duel Monsters. He is, initially, rather unskilled at the game. Made his progress through additional help from Yuugi, but he gains a knack for the game and eventually goes on to place second in the Duelist Kingdom Tournament, fourth in Battle City, but is eliminated early on in the KC Grand Championship Tournament.
Jonouchi is shown to have a very kind soul and eager willingness to help those he loves, but he also demonstrates a near lack of modesty and can be rather rash at times, making him a source of comic relief.