On screen
Cast
8 credited performers
Jiřina Bohdalová
Hop (voice) (uncredited)
Vladimír Hrubý
Hup (voice) (uncredited)
František Filipovský
Rybička (voice) (uncredited)
Artwork unavailable
Oldřich Musil
Captain (voice) (uncredited)
Miloš Kopecký
Pepa Bepa (voice) (uncredited)
Nataša Gollová
Turtle (voice) (uncredited)
Antonín Jedlička
Radio (voice) (uncredted)
Luděk Kopřiva
Snowman (voice) (uncredited)