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Siryn (comics)

Siryn
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Siryn
Art by Ryan Sook
Publication information
Publisher Marvel Comics
First appearance Spider-Woman #37 (April 1981)
Created by Chris Claremont
Steve Leialoha
In-story information
Alter ego Theresa Maeve Rourke Cassidy
Species Human Mutant
Team affiliations Fallen Angels
Muir Island X-Men
X-Corporation
X-Factor Investigations
X-Force
Partnerships Black Tom Cassidy
Juggernaut
Notable aliases Banshee
The Morrigan
Tracy Cassidy
Abilities
  • Sonic Scream
  • Flight
  • Sound Manipulation
  • Hypnosis
  • Teleportation
  • Immortality/Longevity
  • Various undefined mystical abilities since becoming the Morrigan

Theresa Maeve Rourke Cassidy is a fictional superhero appearing in American comic books published by Marvel Comics, commonly in association with the X-Men. Debuting under the codename Siryn, she later retired the name and started using Banshee, in honor of her late father, Sean Cassidy, who first used the alias.

Like her father, the X-Men's Banshee, Theresa is an Irish mutant who possesses a "sonic scream" capable of incapacitating and injuring an opponent's hearing and sending powerful vibrations through the air. She can use these vibrations to fly. Her name refers to the Sirens of Greek mythology.

Theresa was raised by Banshee’s cousin and nemesis Black Tom Cassidy without Banshee's knowledge. By her early teens, she left Black Tom and eventually joined the X-Men offshoots X-Force and later X-Factor.

Created by writer Chris Claremont and artist Steve Leialoha, Siryn first appeared in Spider-Woman #37 (April 1981), where she appears as a villain. Along with many young mutants at the time such as Sunspot and Multiple Man, she featured in the limited series Fallen Angels (1987). She was one of the first members of X-Force (vol. 1) (1991), beginning in issue #3, and remained a regular in that book through issue #100 (2000). As a love interest of Deadpool, she concurrently appeared in one of his earliest solo titles-- Deadpool: Sins of the Past (1994), and sporadically appeared in Deadpool (vol. 1) (1997) and Cable and Deadpool (vol. 1) (2005). In 2006, she rejoined forces with Multiple Man as a member of X-Factor (vol. 3) through issue #244 (2012), in which she becomes The Morrigan and leaves the team and general publication.


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