Siryn

Common card · No. 354638

Siryn (Theresa Maeve Rourke Cassidy) is a superhero appearing in American comic books published by Marvel Comics. Created by writer Chris Claremont and artist Steve Leialoha, the character first appeared in Spider-Woman #37 (April 1981). Theresa Cassidy belongs to a subspecies of humans called mutants, who are born with superhuman abilities. She possesses a sonic voice providing various effects while her name refers to the Sirens of Greek mythology and their hypnotic voices. She is depicted most commonly in association with the X-Men and related teams like X-Factor and X-Force. Theresa Cassidy is the daughter of the superhero Sean Cassidy. The character has also been known as Banshee at various points in her history.

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