Yubel Sakamoto is a pivotal character in the anime series 'Yu-Gi-Oh! GX'. Originally the childhood friend and guardian spirit of the protagonist, Jaden Yuki, Yubel evolves into a major antagonist whose actions drive much of the series’ final arc. Driven by a deep, complicated love for Jaden, Yubel seeks to unite their souls, leading to dramatic conflicts and duels. Yubel is known for a complex personality, unique appearance, and an iconic fusion of both male and female traits.