Sunpyre

Leyu Yoshida and her brother Shiro were born to a mother who suffered radiation poisoning due to exposure to the atomic bombing of Hiroshima, Japan. As a result, she and her brother were born mutants, possessing identical powers. Her brother would go on to be the well-known Japanese superhero Sunfire.

When Magneto was bent on starting World War III with his mutant army from Genosha, Leyu appeared and joined the X-Men. Jean Grey had summoned Sunfire, but instead Sunpyre appeared, as Shiro was at the time unavailable. Sunpyre impressively battled Magneto, but almost was defeated when he created a metallic cocoon around her. Later, Sunpyre chose to return home instead of remain in the United States with the arrogant X-Men.

Banshee later invited her to join his X-Corps. She spent most of her time in the laboratory studying the mutant, Abyss. However, Mystique had infiltrated the group and began her plan for taking over the X-Corps. Mystique stabbed Sunpyre to death, and also stabbed Banshee.

Later, a Sunpyre from an alternate reality was pulled out of Honey Lemon's Power Purse to fill Sunfire's spot on the Big Hero 6 team, so that her brother could work at Charles Xavier's X-Corporation office in Mumbai, India. In response, Sunpyre worshipped Honey Lemon like a goddess.

Relatives

Saburo Yoshida (father, deceased), unidentified mother (deceased), Tomo Yoshida (uncle, deceased), Shiro Yoshida (Sunfire, half-brother), Yoshi (cousin, deceased), Shingen Harada (first cousin once removed, deceased), Mariko Yashida (second cousin, deceased), Kenuichio Harada (Silver Samurai, second half-cousin)

Sunpyre was created by Scott Lobdell and Salvador Larroca and first appeared in The Uncanny X-Men issue 392 (2001).