Liliya Gritsenko

Stepan (voice)

Galina Novozhilova

Tanya, his sister (voice)

Evgeniya Mores

Volodya, their neighbor (voice)

Mikhail Yanshin

Boatswain Mikhal Mikhalych (voice)

Erast Garin

Toy clown / voice from radio (voice, uncredited)