E. HERO Neos is a fictional character from the anime series Yu-Gi-Oh! GX. He is a powerful HERO monster card used by the protagonist Jaden Yuki. Neos is known for his unique ability to fuse with Neo-Spacian monsters to form various powerful fusions, each with distinct abilities. As one of Jaden's signature cards, Neos plays a crucial role in many of his duels, symbolizing Jaden's growth and connection with the Neo-Spacians. His presence often turns the tide of battles in Jaden's favor.