Richard Harrison as Perseo

Ángel Jordán as Medusa

Anna Ranalli as Andromeda

Arturo Dominici as Akrisios

Riccardo Cucciolla as (Voice dubbing for Richard Harrison)

José Sepúlveda as Cefeo's counsellor

Lorenzo Robledo as Prince

Ángela Pla as Euryale

Enrique Navarro as Stheno

Rufino Inglés as

Miguel González as

Jose Luis Ferreiro as

Miguel de la Riva as Prince

Rafael Cortés as Serifo nobleman

Frank Braña as Prince

Elisa Cegani as Danae

Bruno Scipioni as

Fernando Liger as

Ángel Jordán as Alceo

Roberto Camardiel as Cefeo

Antonio Molino Rojo as Tarpete

Leo Anchóriz as Galenore

Arturo Dominici as Acrisio