Mary Walker

Mary Alice Walker is a woman with dissociative identity disorder whose alternating personalities — the meek, pacifist Mary and the violent, pyrokinetic Typhoid — give her a dangerously unpredictable edge in combat; a mutant-level telekinetic and pyrokinetic, she honed her formidable martial-arts and edged-weapon skills and first came to wider attention when the Kingpin hired her specifically to torment Daredevil, exploiting a past encounter she may have shared with Matt Murdock.

Born from the creative partnership of Ann Nocenti and John Romita Jr. in the pages of Daredevil #254 in 1988, Mary Walker is one of the Copper Age's most compelling and enduring Marvel figures — a character complex enough to have kept readers hooked across nearly four decades of publication. Her debut is a recognized key issue, a testament to the immediate impact she made on the Marvel landscape, and she's built up an impressive 121 catalog appearances across titles like Marvel Comics Presents, Daredevil, and Avengers: The Initiative. She moves through some of Marvel's most charged corners, sharing pages with heavyweights like Daredevil, Matt Murdock, and Wilson Fisk himself — the kind of company that signals a character operating at the highest dramatic stakes. If you haven't spent time with Mary Walker, her long run and that prized key issue are more than enough reason to start digging.