George Segal as J

Karen Black as Parm

Paula Prentiss as Veronica

Jay Fletcher as Billy Dynamite

Héctor Elizondo as Vivian

Robert De Niro as Danny

Ed Madsen as Detective

Marcia Jean Kurtz as Marlene

Irving Selbst as Stanley

Tim Pelt as Little Davey

José Pérez as Junior Conception

Jack Hollander as Harry

Alex Colon as Bus Boy

Max Brandt as Store Clerk

Burt Young as First Hood

Roland Kindhard as Second Hood

Jean David as Laundry Woman

Paul Benjamin as Fixer

Charles McGregor as Lethal Messenger

David Milton as Smuggler

Cynda Westcott as Billy's Date

Aaron Braunstein as Man in Store

Lockie Edwards as Man in Bar

Diane Molneri as Girl on Terrace

Jane Elder as Girl's Mother

Vic Ramos as Man with Package

Walter Stevens as Respectable Businessman

Harry Gorsuch as Passerby (uncredited)

Sylvia Syms as Cashier