Johan Andersen (Jesse Anderson in the 4Kids dub) is a Scandinavian friend of Judai Yuki, student of the Arctic Academy and one member of the Overseas Champions in season three of Yu-Gi-Oh! GX.
He was voiced by Kanako Irie in the Japanese version and Clay Adams in the English version.
When Johan, Austin, Jim and Amon arrived to Duel Academia, Professor Cobra tried to collect their and other students of Duel Academy duel energy to Yubel. When Yubel took all Duel Academia and its students to the Duel Monsters' Dimension. But when Pegasus created the "Ultimate Gem God - Rainbow Dragon" card and it was sent to Johan, it helped them and the Academia to return to home. And when it happened, Johan was left behind, and then Yubel possessed him. But later, Judai managed to rescue him from Yubel's possession. And later, Johan and the other friends returned to home.