Roo Marcus
Casper
Napoleon
Charlie
Tunney
Razor
Cannon (as Peter Dempster)
Batty
Gus
Maxie
Danny Boy
Tall Tim (as Lawrence King Phillips)
Patch (as Dave Schaller)
Referee #1
Referee #2
Guard #1
Cyril
Business Man (as Paul Gordon)
Ralph
Mr. Regan
Secretary
Plainclothes Cop
Warden
Inmate #1
Woman (as Mary Ethel Phelar)
Groupie (as Lolita David)
Old Fight Fan #1
Old Fight Fan #2
Yes Man #1
Yes Man #2
Bouncer
Sully
Gym Rat
Loan Shark / Cannon's Opponent
Loan Shark
Street Kid
Car Jockey
Hair Stylist
Security Guard
Cannon's Opponent (as Louis Rightman)
Cannon's Opponent
Cook
Little Girl
Thug (uncredited)
Angry Man (uncredited)
Boxing Referee (uncredited)