Siryn (Theresa Cassidy) – This Day In Comics ( @thisdayincomics)

Siryn (Theresa Cassidy)

Siryn (Theresa Cassidy) – This Day In Comics

Siryn (Theresa Cassidy) – This Day In ComicsSpider-Woman #37 – Who Am I?

Like her father, the X-Men’s Banshee, Theresa Maeve Rourke Cassidy 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. 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. Siryn first appeared in Spider-Woman #37 (December 30, 1980), where she appears as a villain.