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)