Akira Takaki

Muumipeikko (voice)

Oiva Lohtander

Muumipappa (Finnish version) (voice)

Niklas Åkerfelt

Nuuskamuikkunen / Hemuli (Finnish / Swedish version) (voice)

Vesa Vierikko

Narrator / Postman (Finnish version) (voice)

Maria Sid

Muumimamma / Salome / Homssumuori (Finnish / Swedish version) (voice)

Diandra Flores

Pikku Myy / Homssu-punapää / Mymmeli (Finnish version) (voice)

Saara Lehtonen

Squirrel / Surku-koira / Vilijonkka / Homssu-pellavapää (Finnish version) (voice)

Nina Hukkinen

Tuu-Tikki / Tahmatassu / Kampsu / Nyyti (Finnish version) (voice)