Mikołaj Wachowski as Diplodok (voice)

Borys Szyc as Hokus Pokus / Hokus Pokus' Father (voice)

Małgorzata Kożuchowska as Entomologia (voice)

Arkadiusz Jakubik as Professor Nerwosolek / Diplodok's Grandfather (voice)

Piotr Polak as Tadek

Helena Englert as Publisher

Mariusz Szczygieł as Donkey Kleofas (voice)

Grzegorz Pawlak as Diplodok's Father / Apologizing Audience (voice)

Monika Pikuła as Diplodok's Mother / Onion #1 (voice)

Karol Strasburger as Host (voice)

Robert Makłowicz as Snake (voice)

Piotr Kędzierski as Dwarf (voice)

Agnieszka Matysiak as Baba Jaga / Hokus Pokus' Mother (voice)

Jarosław Boberek as Near-Deaf Wizard (voice)

Paweł Piotrowski as Hokus Pokus (young) (voice)

Jelena Goldfinch as Girl

Tadeusz Baranowski as Girl's Grandfather / Bookworm (voice)

Małgorzata Strasburger as Onion #2 (voice)

Tomasz 'Lew' Leśniak as Apologizing Audience (voice)

Filip Kowalewicz as Teddy