Jaden Yuki

"Get your game on!" - Jaden to his opponent.

Jaden Yuki (voiced by Matthew Charles) is the main protagonist in Yu-Gi-Oh! GX and the leader of his Adventure team, The Slifers. He is also the second leader of The Justice Guardians, as well as Twilight and Kyle's most familiar ally.

Pre-Adventure Series:
He went to a place called Duel Academy where he could learn to become next king of games. He duels with Elemental Heroes and Neo-Spacians. He's ranked as a Slifer Red (the lowest rank for students) because of his poor grades, even though he's one of the best duelists at Duel Academy. In his first year at Duel Academy, he defeated the Shadow Riders, and took down the three Sacred Beast cards. In his second year, Jaden dueled a pro named Aster Phoenix, lost and saw all his cards to be blank. He ran away, and after visit to a distant planet, Jaden acquired the Neo-Spacian cards he created as a kid, and with their help, he vanquished the Light of Destruction. And on his third year, he had to face an old "friend" Yubel to save his friends. It all started when a man named Professor Viper started "Survival Duels" at Duel Academy. His duels would end up taking the duel energy from students for Yubel and leave them tired. He and his friends confronted him, but Duel Academy ended up being sent to an alternate dimension in the middle of a desert. While searching for a way to get back, several students turned into Duel Ghouls. Jaden and his friend, Jesse Anderson, dueled against Yubel, but Jesse stayed behind to finish dueling Yubel. Feeling bad about himself, Jaden and his friends traveled to another dimension to look for Jesse. But after several of his friends got sent to the stars during a duel with Brron, the power of darkness took over him and he became evil tyrantical ruler known as the Supreme King. But he was freed from that evil by Alex and Jim. Even if he was freed, Jaden was too afraid to duel again, fearing that Supreme King would take control of him again. But with a little help from his remaining friends, he was able to gather the courage to help free Jesse from Yubel's control. During his duel with Yubel, he combined their spirits as one way to make up for his actions. His main partner is Winged Kuriboh.

Adventure Series:
After his duel with Yubel, Jaden awoken to find himself face to face with Osiris the Egyptian Lord of the Underworld. Osiris tells Jaden that to become the next king of games, he must journey off and face new challenges in different worlds.

In the Adventures Series, Jaden confessed his love for Alexis Rhodes, and they both started a relationship.

In Twilight and Kyle's Adventures Series, Jaden, along with his brother Jeffrey Dragonheart and their team, meets Twilight, Kyle and their friends, as well as they've became great allies with them.