Sergei Desnitsky as Pirx

Bolesław Abart as Jan Otis

Vladimir Ivashov as Harry Brown

Aleksandr Kaydanovskiy as Tom Novak

Zbigniew Lesień as John Calder

Ferdynand Matysik as Green

Igor Przegrodzki as McGuirr

Tõnu Saar as Kurt Weber

Zygmunt Bielawski as Tech Companies Representative

Janusz Bylczyński as Judge

Adam Cieślak as

Edmund Fetting as Prosecutor

Józef Fryźlewicz as Defense Attorney

Marek Idziński as Court Member

Mieczysław Janowski as Mitchell

Faime Jurno as

Z. Jurkowski as

Jerzy Kaliszewski as Android Creator

Eugeniusz Kujawski as Court Member

Ewa Lejczak as

Erwin Nowiaszak as United Atomic Laboratory CEO

Henryk Talar as Tom Novak (voice) (uncredited)