Yubel

Yubel
_{Yu-Gi-Oh! GX}

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Yubel is an antagonist of the of the Yu-Gi-Oh! GX anime. A malevolent Duel Monster whose card was in Jaden Yuki's possession when he was a child, Yubel was previously obsessed with their love for Jaden. They are later redeemed after Jaden fuses with Yubel, reuniting them forever. Since then, they has acted as Jaden's partner.

In their previous past life, Yubel and their best friend lived in an unnamed kingdom. The King informed Yubel that their friend would wield the power of the Gentle Darkness and that he needed a guardian to watch over him until he grew to adulthood and could control it. Yubel volunteered to be that guardian and was transformed from a human into the form they are most commonly seen in. Jaden's ancestor swore that he would love them and only them after that transformation.

In the modern era, Yubel's spirit is made into a card by Industrial Illusions. The card was eventually found by Jaden's father. Jaden, it turned out, was the reincarnation of the person Yubel swore to protect, and whom they had loved. Yubel vowed to protect him once again. Yubel wished to guard Jaden against any and all perceived threats, which unfortunately included any threats to their relationship.

During that time, Yubel caused anybody that Jaden dueled to fall into a coma, including an acquaintance of Jaden's. This alienated Jaden as people perceived him as cursed, and became too scared to Duel him. Under Jaden's request, Yubel was sent into outer space by KaibaCorp., hoping to rid himself of the dangerous card. Calling out for Jaden's help in his dreams to no avail, Yubel was driven insane in their isolation and went on to cause the awakening of The Supreme King when they were finally released.

After fusing with Jaden, Yubel's spirit appears on various occasions, and it's noticeable that their personality has changed once all hatred towards Jaden and all influence from the Light of Destruction is gone, taking a more supportive role by lending their power to him. The reason behind their sudden change in personality can likely be linked to Jaden holding the power of The Gentle Darkness.

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