Rod Taylor as Chuka

Ernest Borgnine as Sgt. Otto Hahnsbach

John Mills as Colonel Stuart Valois

Luciana Paluzzi as Señora Veronica Kleitz

James Whitmore as Lou Trent

Victoria Vetri as Señorita Helena Chavez

Louis Hayward as Major Benson

Joseph Sirola as Jake Baldwin

Marco López as Hanu

Michael Cole as Spivey

Hugh Reilly as Capt. Carrol

Barry O'Hara as Slim

Gerald York as Lt. Daly