Judai Yuki is the main protagonist of the anime series Yu-Gi-Oh! GX. He is a cheerful and talented Duelist who attends Duel Academy, aiming to become the next King of Games. Known for his optimism and strong sense of justice, Judai excels at making friends and overcoming tough opponents with his Elemental HERO deck. Throughout the series, he matures as a duelist and faces various challenges, ultimately saving the world from numerous threats alongside his friends.