Terence Hill as Rosco Frazer / Steinberg

Bud Spencer as Doug O'Riordan / Mason

Buffy Dee as K1

David Huddleston as Tiger, Chef des C. I. A.

Riccardo Pizzuti as Dr. Spider

Faith Minton as La Fatalona

Dan Rambo as Jeremy Scott

Susan Teesdale as Barmaid

Dan Fitzgerald as Hotel Concierge

Al Nestor as Hamburger Vendor

Christine Troples as Concerned Wife in Bar

Woody Woodbury as Agent on Plane

Giancarlo Bastianoni as Black Suit Thug (uncredited)

Harold Bergman as Sam (uncredited)

George Coutoupis as Rockstar on Airplane (uncredited)

Alex Edlin as Man in Bar Reading Newspaper (uncredited)

Charles P. Harris as Restaurant Person (uncredited)

Joe Hess as Man in Bar Talking to Friend (uncredited)

Mal Jones as Pain in the Neck in Prison (uncredited)

Jeff Moldovan as Charlie Chan - Leader of Asian Fighters (uncredited)

Raffaele Mottola as Foreign Correspondent in Video Conference (uncredited)

Clayton Sauer as Man in Restaurant (uncredited)

Darcy Shean as Woman in Restaurant (uncredited)

Joey Silvera as Leonard (uncredited)

Paul Tenn as Killer (uncredited)

Clarence Thomas as Cleaner at airport (uncredited)