Evgeny Mironov as Venya (voice)

Sergey Burunov as uncle Yasha (voice)

Sergey Shnurov as Slonezh, alien (voice)

Irina Pegova as Strelka (voice)

Yulia Peresild as Belka (voice)

Sergei Dyachkov as Lyagus, alien (voice)

Diomid Vinogradov as Tolya / Cat (voice)

Elena Shulman as Mariya (voice)

Anton Vinogradov as jellyfish (voice)

Andrey Levin as jellyfish (voice)

Sergey Mardar as jellyfish (voice)

Vladimir Maslakov as jellyfish (voice)

Mikhail Khrustalev as jellyfish (voice)

Mikhail Chernyak as jellyfish (voice)

Egor Zhirnov as (voice)

Andrey Kurnosov as (voice)

Ivan Mokhovikov as (voice)

Olga Shcherban as (voice)

Ekaterina Tikhomirova as (voice)