Tom Cassidy is a mutant and the brother of fellow-mutant Sean Cassidy. As Black Tom, he is an associate of Juggernaut.
Black Tom Cassidy (born Thomas Cassidy) is a mutant with the ability to generate blasts of energy directly through the parts of his body that were grafted to a wood-like substance.
"Black Tom" Cassidy (Thomas Samuel Eamon Cassidy) is a Marvel Comics supervillain, an enemy of the X-Men, and archenemy of Banshee. Created by writer Chris Claremont and artist Dave Cockrum, he first fully appeared in Uncanny X-Men #101 (October 1976). In addition to fighting the X-Men, he has clashed with Deadpool a number of times.