Gian Maria Volonté as Professor Brett Fletcher

Tomas Milian as Solomon 'Beauregard' Bennet

William Berger as Charley Siringo

Jolanda Modio as Maria

Gianni Rizzo as Williams

Carole André as Elizabeth Wilkins

Ángel del Pozo as Maximilian de Winton

Aldo Sambrell as Zachary Shawn

Nello Pazzafini as Vance

José Torres as Aaron Chase

Linda Veras as Cathy

Antonio Casas as Leading Citizen of Puerto del Fuego

Frank Braña as Jason

Lorenzo Robledo as Wallace

Guy Heron as Sheriff at de Winton Estate

Rossella D'Aquino as Sandy / Sally

Giovanni Ivan Scratuglia as Taylor Henchman

Lidia Alfonsi as Belle de Winton