Katsuya Jonouchi

Joseph "Joey" Wheeler, known as Katsuya Jonouchi (城 (じょう) 之 (の) 内 (うち) 克 (かつ) 也 (や) Jōnouchi Katsuya) in the manga and Japanese version, is one of the main characters in Yu-Gi-Oh!. He is best friends with Yugi Muto. Joey starts out as an inexperienced Duelist, but he later becomes one of the greatest Duelists in the world. He accompanies Yugi throughout his adventures.