BIOGRAPHY
Sean Cassidy
Full Name:	Seasn Cassidy
Known aliases:	Banshee
Species:	human (mutant)
Gender:	male
Birthplace:	Ireland
Affiliation:	X-Men
Family
Career
Occupation:	teacher

Sean Cassidy was a mutant human from the 1990s of a parallel reality. He was a native of the country of Ireland. Due to his mutant ability (a "sonic scream") he used the codename "Banshee." Cassidy served as a member of the team known as the X-Men, plus he also was known as a teacher. (TNG comic: "Second Contact")