Katsuya Jonouchi (城之内 克也, Jōnouchi Katsuya?) is a fictional character in the manga and anime series Yu-Gi-Oh! He is known as Joseph "Joey" Wheeler in the English-language anime and video games.
The pronunciations from the first characters of "Yūgi" and "Jōnouchi" form the word "Yūjō" (友情), which means "friend" or "fellowship". The Yu-Gi-Oh! game card, called "Yu-Jo Friendship" (the Japanese card is "友情 Yū-Jō") is named after the word and the relationship between the characters, especially Jonouchi and Yugi.
Read more about Katsuya Jonouchi: Concept and Creation, Character Biography, Yu-Gi-Oh! 5D's, Deck