Monster Maker

Kieran O'Brien

Matt Banting

Harry Dean Stanton

Chancey Bellow

Alison Steadman

Perriwinkle

Michael Gambon

Ultragorgon

Bill Moody

Reg

Amanda Dickinson

Mother

Grant Bardsley

Ben

Matthew Scurfield

Vaughn

Jonathan Coy

Teacher

Michael Gambon

Ultragorgon(voice)