Matt Smith

Superworm (voice)

Olivia Colman

Narrator (voice)

Patricia Allison

Butterfly (voice)

Rob Brydon

Crow (voice)

Kobna Holdbrook-Smith

Wizard Lizard (voice)

Paul Thornley

Papa Toad / Beetle (voice)

Cariad Lloyd

Mama Toad / Beetle (voice)

Felix Tandon

Baby Toad (voice)