Tygo Gernandt as Knokige Krelis

Egbert Jan Weeber as Hector Donderbus

Samuel Reurekas as Billy Donderbus

Sarah Janneh as Betsie Donderbus

Matti Stooker as Michiel Brugman

Celeste Holsheimer as Elizabeth Daandels

David Lucieer as Robert Brugman

Nyncke Beekhuyzen as Yvonne Brugman

Bert Hana as Buurman Daandels

Sytske van der Ster as Buurvrouw Daandels

Peter van Heeringen as Opa Donderbus

Dylan Haegens as Papegaai

Hans Doodkorte as Nordic Walker