Siryn (Theresa Cassidy)

136 appearances · First published 1981

Siryn (Theresa Cassidy) appears in 136 issues in grailworth's catalog, and was first published in 1981. First appearance: Spider-Woman #37 (1978), cover dated 1981.

First appearance

Spider-Woman #37 (1978)First appearance1981

Every appearance we value

Cable (1993) 2 issues

Cable / Deadpool (2004) 4 issues

Cable / X-Force '96 (1996) 1 issue

Contest of Champions II (1999) 1 issue

Deadpool (1994) 4 issues

Deadpool (1997) 3 issues

Deadpool: Merc with a Mouth (2009) 1 issue

Fallen Angels (1987) 8 issues

Generation X (1994) 1 issue

Marvel Age Annual (1985) 1 issue

Marvel Comics Presents (1988) 1 issue

Marvel Zero (2024) 1 issue

New X-Men (2001) 2 issues

Spider-Man (1990) 1 issue

Spider-Woman (1978) 2 issues

Thunderbolts (1997) 1 issue

Uncanny X-Men (2024) 8 issues

Wolverine (1988) 2 issues

Wolverine: First Class (2008) 3 issues

World War Hulk: X-Men (2007) 2 issues

X-Factor (1986) 2 issues

X-Factor (2006) 26 issues

X-Factor Annual (1986) 2 issues

X-Force (1991) 34 issues

X-Men (1963) 9 issues

X-Men (1991) 1 issue

X-Men (2024) 1 issue

X-Men Forever (2001) 1 issue

Youngblood / X-Force (1996) 1 issue

Character appearances from the Grand Comics Database, CC BY-SA 4.0.