L'invincibile Superman
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Giovanni CianfrigliaSuperargo
Guy MadisonProf. Wendland Wond
Luisa BarattoClaire Brand
Diana LorysGloria Devon
Aldo SambrellKamir / Pao-Ki
Tomás BlancoDavies
Sergio TestoriJo Brand- Valerio TordiProfessor Presenski
Aldo Bufi LandiJ.G. Stafford
Valentino MacchiBank Guard- Frank von KuegelgenMedical Examiner (voz)
Mauro MannatrizioHenchman in Cave
Emilio MessinaWrestler vs Jo Brand
Roberto MessinaWrestler vs Superargo