Sunfire

Shiro Yoshida is a Japanese mutant whose mother was exposed to radiation from the Hiroshima atomic bomb, gifting him with the power to generate and manipulate superheated plasma for flight and devastating energy blasts. Fiercely nationalistic, he initially clashed with the X-Men before becoming an occasional — if reluctant — ally.

Bursting onto the Silver Age scene in The X-Men #64 back in 1970, Sunfire is one of Marvel's most enduring mutant figures — a character who has kept remarkable company over more than five decades, sharing adventures with luminaries like Wolverine, Cyclops, and Ororo Munroe across the pages of Uncanny X-Men and beyond. As an X-Men affiliate, Sunfire occupies a fascinating place in the Marvel mutant tapestry, a presence whose longevity — 219 catalog appearances stretching all the way to 2026 — speaks to a staying power that few characters from that era can match. Seventeen of those appearances carry key-issue status, making a complete Sunfire collection a genuinely rewarding pursuit for any serious Marvel enthusiast. From the classic Bronze Age runs through the modern Trials of X, this is a character whose arc rewards the devoted reader willing to trace it from the very beginning.