Ben Gazzara character Al Capone
Harry Guardino character Johnny Torrio
Susan Blakely character Iris Crawford
Sylvester Stallone character Frank Nitti
John Cassavetes character Frankie Yale
Frank Campanella character Big Jim Colosimo
John Orchard character Dion O'Banion
Carmen Argenziano character Jack McGurn
George Chandler character Robert E. Crowe
John Davis Chandler character Hymie Weiss
Royal Dano character Anton J. Cermak
Joe De Nicola character Charles Fischetti
Angelo Grisanti character Angelo Genna
Peter Maloney character Jake Guzik
Dick Miller character Joe Pryor
Robert Phillips character Bugs Moran
Martin Kove character Pete Gusenberg
Mario Gallo character Giuseppe Aiello
George Milan character William H. Thompson
Russ Marin character Joseph Stenson
Tony Giorgio character Antonio Lombardo
John Martino character Tony Amatto
Bert Conway character Frank Loesch
Don Pulford character William Cooper
Pamela Toll character Mrs. Atkins
Eugenia Stewart character Miss Detwiller
Don McGovern character N.Y. Cop #1
Redmond Gleeson character N.Y. Cop #2
John P. Finnegan character N.Y. Police Lt.
Laurence Hagen character Samuel Ettelson
Tom Cook character Sam Volenta
Vincent Barbi character Solly
Tina Scala character Mrs. Torrio
James V. Christy character Thomas Bronk
Jack Ackerman character Adam Heyer
Ralph James character Judge J.H. Wilkerson
Carmen Filpi character Waiter
Jim Galante character John May
John Howard character Warden J. Johnston
Beach Dickerson character Joe Kepka
John C. Broderick character Maitre d'
Chuck Traynor character Senator
James R. Sweeney character Prison Doctor
George Engelson character Torrio's Doctor
Deborah Klose character Female Reporter
John Favorite character First Reporter
John Armond character Second Reporter
Jack O'Leary character Pool Hall Owner
Ben Marino character Frank Gusenberg
