Olof Thunberg

as Agaton Sax (voice)

Stig Grybe

as Mr. Lispington (voice)

Isa Quensel

as Aunt Tilda (voice)

Helge Hagerman

as Antonsson (voice)

Per Sjöstrand

as Mosca / McSnuff (voice)

Leif Liljeroth

as Scott / Amber (voice)

Stig Lasseby

as Thinking August (voice)

Bert-Åke Varg

as Narrator (voice)

Annica Risberg

as (voice)