Broderick Crawford

as Rollo Lamar

Ralph Meeker

as Geraldo 'Jerry' Barker aka Iceman

Reed Hadley

as Special FBI Agent James Madden

William Talman

as William 'Machine Gun' Mason

Lon Chaney Jr.

as Leonard M. 'Alamo' Smith

Charles Bronson

as Benny Kelly

Felicia Farr

as Emily Euridice Evans

Roy Roberts

as Chief Ranger Will Erickson