"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.
He went to a place called Duel Academy where he could learn to become the 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 aquired the Neo-Spacian cards he created as a kid, and with thier help, he vanquished the Light of Destruction. And on his third year, he had to face an old "friend" named 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 powers of darkness took over him and he became an evil tyranical ruler known as the Supreme King. But he was freed from that evil by Axel 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.
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 Adventure Series, Jaden confessed his love for Alexis Rhodes, and they both started a relationship.
- Alexis Rhodes (wife)
- Lily (daughter)
- Jeffrey Dragonheart (big brother)
- Aqua (big sister)
- Xion (niece)
- Bruce Dragonheart (nephew)
- Nerida Yuki (mother)
- Syrus Truesdale
- Jesse Anderson
- The Light
- Yugi Muto
- Helping others out
- Doing what's right
- Helping people in need in any possible way
- Challenging new opponents
- Golden Egg-which's
- Funko Pop figures
- Yubel's possessive behavior (or anyone else being possessive of him)
- Doing homework
- Attending classes in Duel Academy
- The Darkness
- The idea of losing his friends and family
- Brron, the Mad King of Dark World
- Set the God of Chaos
- Master Xehanort
- Mr. Stein
- Judge Doom and The Dip
- Mr. Director
- Baloney the Dinosaur
- Spiders (as of Jeffrey, Jaden & Friends' Storm Adventures of Harry Potter and the Chamber of Secrets)
- People hunting for sport
- His first adventure begins with Jaden meets Aladdin.
- His arch enemy is Set the God of Chaos.
- Jaden is one of the famous Three J's.
- Jaden at first didn't know anything about love, but after getting Alexis as his girlfriend, he becomes a love doctor, and throughout the Adventure series helps people form relationships.
- Jaden will meet Jeffrey and his team in Jeffrey, Jaden & Friends meet TRON. From then on, Jaden will be a best friend to Jeffrey. Jaden will also be sort of like a little brother to Jeffrey.
- In Jeffrey, Jaden & Friends meet TRON, Xion will say Jaden's name and consider him to be a uncle.
- Jaden sees Jeffrey in his dragon-form in Jeffrey, Jaden & Friends' Storm Adventures of TRON: Legacy, and becomes of the first people to accept Jeffrey for it.
- Jaden will be taken over by the Supreme King again in Jeffrey, Jaden, and Friends' Adventures of Indiana Jones and The Temple of Doom.
- Jaden will finally marry Alexis in Wedding Duels Part 1 and Wedding Duels Part 2.
- Jaden uses the power of the Supreme King for emergency uses. He lets his anger rise, and his eyes turn yellow, and his voices changes.
- In Jeffrey, Jaden & Friends' Storm Adventures of Rise of the Guardians, Jaden finally conquers his fear of Brron, the Mad King of Dark World.
- Jaden and his team will join Jeffrey and his team in the end of Jeffrey, Jaden and Scooby Doo on Zombie Island.
- Jaden gets a gold Wayfinder from Aqua in Jeffrey, Jaden & Friends' Storm Adventures of The Hitchhiker's Guide to the Galaxy.
- After Jeffrey marries Aqua, she will become like an older sister to Jaden. Jaden even reminds Aqua of Ventus because of how similar Jaden is to him. Jeffrey and Aqua are currently Jaden's legal guardians, making Jaden an official member of the Dragonheart family. SPOILER ALERT: It later revealed Aqua is Jaden's long lost half-sister.
- Jaden can understand Ancient Egyptian. This is useful when Jaden faces Imhotep in Jeffrey, Jaden & Friends vs. The Mummy.
- Jaden gains the ability to wield the Keyblade after a Heartless attack in Jeffrey, Jaden & Friends' Storm Adventures of The Mummy Returns. He is inherited the Keyblade from Osiris.
- Jaden finally meets and duels his idol Yugi in The Next King of Games and wins. He than is coronated the New King of Games, making a real king.
- Jaden becomes a father figure to Midna in the series.
- Jaden's favorite drink is Diet Coke.
- In Japan, Jaden Yuki is Judai Yuki.