Sunfire (Shiro Yoshida (吉田 四郎, Yoshida Shirō)) is a fictional superhero appearing in American comic books published by Marvel Comics. Sunfire is a mutant and former member of the X-Men.Sunfire is a temperamental and arrogant Japanese mutant who can generate superheated plasma and fly. Not suited for teamwork, Sunfire was only briefly a member of the X-Men and has kept limited ties to the team since. He has had some presence in the greater Marvel Universe.