On screen
Cast
18 credited performers
Antonio Cantafora
Paul
José Luis Ayestarán
Kronos/Supersonic Man
Cameron Mitchell
Dr. Gulik
Artwork unavailable
Diana Polakov
Patricia Morgan / Patricia Gordon
José María Caffarel
Prof. Morgan / Prof. Gordon
Frank Braña
Peterson
Artwork unavailable
Javier De Campos
Drunk
Tito García
George
Luis Barboo
Harrison
Quique Camoiras
Bill
Ángel Ter
Character not listed
Artwork unavailable
Emilio Higuera
Character not listed
Artwork unavailable
Luis Castilla
Character not listed
Emilio Fornet
Character not listed
Marta Fernández Muro
Character not listed
Artwork unavailable
José Antonio Rico
Character not listed
Artwork unavailable
Teófilo Martínez
(voice)
Artwork unavailable
Óscar Simón
Character not listed