Akira Takaki
Muumipeikko (Finnish version) (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 Hedström
Tuu-Tikki / Tahmatassu / Kampsu / Nyyti (Finnish version) (voice)
Terrence Scammell
Ancestor (Swedish version) (voice)
Stellan Skarsgård
Moomin Pappa (Swedish version) (voice)
Bill Skarsgård
Moomintroll (Swedish version) (voice)
Alicia Vikander
Little My / Sorry-oo (Swedish version) (voice)
Stina Ekblad
Berättare / Too-Ticki / Gamla Homsan (Swedish version) (voice)
