Lajka

Helena Dvořáková

Laika (voice)

Karel Zima

Yuri Leftkin (voice)

Petr Čtvrtníček

Queerneck (voice)

Jan Vondráček

Ham / Cow (voice)

Miroslav Táborský

Neil Knockout (voice)

Robert Nebřenský

Professor Vorolev / Pig (voice)

Jan Budař

Assistant Tossoff (voice)

Martin Matejka

Younger Knacker / Professor Tossoff (voice)

Vladimír Merta

Older Knacker (voice)