Pan Kleks w kosmosie

Piotr Fronczewski

Ambroży Kleks

Henryk Bista

Great electronics

Jan Jankowski

Jacek Bronowski / Max Benson

Emilian Kamiński

You smooth it out / 'Hairy fellow'

Maryla Rodowicz

Linella

Bohdan Smoleń

Jarzabek / Manuel Karmello de Bazar

Ján Mildner

Chinese emperor

Mieczysław Gajda

Melodarek (voice) (uncredited)

Irena Kwiatkowska

Information orb (voice) (uncredited)

Henryk Talar

Computer Lucas (voice) (uncredited)

Monika Sapilak

Agnes

Piotr Ptaszyński

Penny Benson

Zofia Merle

Marciniak

Zbigniew Buczkowski

Alojzy Bąbel

Nina Gocławska

Gina Casate