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Siryn (Marvel)
Real Name: Theresa Rourke Cassidy
Search for 'Siryn (Marvel)' on Amazon

- Create various Sonic effects
- "Sonic Lance" (name she gives to focusing your sonic vibrations into an intense beam)
+ Blast Power
+ Divine Powers
+ Flight
+ Force Field
+ Intellect
+ Leadership
+ Radar Sense
+ Sonic Scream
+ Stamina
+ Super Hearing
+ Voice-induced Manipulation
+ Unarmed Combat (trained as X-Force member in Martial Arts)

Father: Sean Cassidy (Father)
Mother: Maeve Rourke Cassidy
Cousin: Black Tom Cassidy

Theresa Cassidy was born to Sean Cassidy , the first Banshee, and Maeve Rourke while Sean was away on a mission for INTERPOL. Not long after Theresa's birth, Maeve was killed by a bomb blast and young Theresa was taken in and cared for by her uncle, Thomas Cassidy , a.k.a. Black Tom. When Sean finally returned home from his mission to find Maeve dead, he directed his anger toward his brother Tom for not looking after her, attacking him and breaking his leg. Out of spite, Tom never told Sean about his daughter, allowing Sean to believe that Theresa had died with her mother.Tom decided to raise his niece on his own. As time went by, Tom became involved in increasingly dangerous criminal activities and, for her protection, shipped the twelve-year-old Theresa off to St. Elizabeth's Boarding School. When she was fifteen, she found out that Black Tom had been arrested by INTERPOL agents. After Theresa developed her mutant abilities--a sonic scream, the same as her true father's--she joined her uncle in his life of crime under the moniker Siryn. She would eventually discover the truth of her origin, however, and become a hero.

She began calling herself Banshee as of X-Factor #205. Siryn was created by writer Chris Claremont and artist Steve Leialoha.

First Appearance: Spider-Woman (1978) #37

Other Identities:
Banshee (Marvel)(02 - Theresa Cassidy)
Morrigan (Marvel)(02 - Theresa Cassidy)

Favorite Characters:
Siryn (Marvel) is a favorite character of 16 users

View a chronological listing of this character's appearances

Issue Appearances:
Age of X: Universe (2011)
All-New Official Handbook of the Marvel Universe A to Z (2006)
Breaking Into Comics the Marvel Way! (2010)
Cable (1993)
Cable & Deadpool (2004)
Contest of Champions II (1999)
Deadpool (1994)
Deadpool (1997)
Deadpool (2008)
Deadpool (2013)
Deadpool Saga (2008)
Deadpool: Merc With a Mouth (2009)
Domino (2003)
Encyclopaedia Deadpoolica (1998)
Excalibur (1988)
Fallen Angels (1987)
Generation X (1994)
Marvel Age (1983)
Marvel Comics Presents (1988)
Marvel Encyclopedia (2014)
Marvel Swimsuit Special (1992)
Nation X: X-Factor (2010)
New X-Men (2001)
New X-Men (2004)
Official Handbook of the Marvel Universe A to Z (2008)
PS238 (2004)
Spider-Man (1990)
Spider-Woman (1978)
The Marvel Encyclopedia (2006)
The Marvel X-Men Collection (1994)
The New Warriors (1990)
The Official Handbook of the Marvel Universe (1983)
The Official Handbook of the Marvel Universe (1989)
The Official Handbook of the Marvel Universe Deluxe Edition (1985)
The Official Handbook of the Marvel Universe: Master Edition (1990)
Thunderbolts (1997)
Uncanny X-Men (1963)
What If...? (1989)
Wild Thing (1999)
Wolverine (1988)
Wolverine: First Class (2008)
World War Hulk: X-Men (2007)
X-Factor (1986)
X-Factor (2006)
X-Force (1991)
X-Force / Champions '98 (1998)
X-Force and Cable '95 (1995)
X-Force/Cable '97 (1997)
X-Force/Youngblood (1996)
X-Man (1995)
X-Men (1991)
X-Men Forever (2001)
X-Men Forever (2009)
X-Men Unlimited (1993)
X-Men: Deadly Genesis (2006)
X-Men: The 198 Files (2006)
X-Men: The Ultra Collection (1994)
X-Treme X-Men (2001)
Youngblood/X-Force (1996)

Group Affiliation(s):
X-Factor Investigations (Marvel)
X-Force (Marvel)(02 - Former New Mutants)
X-Men (Marvel)(02 - Muir Island)

Famous Quotes: - Add a Famous Quote
"I'll give you a thousand bucks if you deal with her."

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