Siryn | |
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![]() Theresa Cassidy / Siryn. Art by Ryan Sook. | |
Publication information | |
Publisher | Marvel Comics |
First appearance | Spider-Woman #37 (April 1981) |
Created by | Chris Claremont (writer) Steve Leialoha (artist) |
In-story information | |
Alter ego | Theresa Maeve Rourke Cassidy |
Species | Human mutant |
Team affiliations | X-Factor Investigations Muir Island X-Men X-Corporation Fallen Angels X-Force |
Partnerships | Black Tom Cassidy Juggernaut |
Notable aliases | Tracy Cassidy Morrigan Banshee Siryn |
Abilities |
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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).[1] 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.[2][3] She is depicted most commonly in association with the X-Men. Theresa Cassidy is the daughter of the superhero Sean Cassidy. The character has also been known as Siryn and Banshee at various points in her history.[4]