Magma (Spider Riders)

Magma is a resident of the Inner World. He started out as a wanderer who never really had a place of his own. He was also searching for his spider partner's sister, a purple spider named Portia, who was also the spider partner of a mysterious girl named Aqune. He met Hunter and at first wasn't interested in being part of a team but after a while, he decided to join the team.

Ultimate Story
Magma made his first appearance in Ultimate Story 2.