Terry Jones

as Narrator (voice)

Björk

as Anna (voice)

Damon Albarn

as Anna's Father (voice)

Sjón

as Dr. Artmann (voice)

Þórunn Lárusdóttir

as Mrs. Young (voice)

Jón Páll Eyjólfsson

as Granny / Anna's Uncle / Hunter / Michael / MUM figure (voice)

Hreidar Smárason

as Little Brother (voice)

Martin Regal

as Normal Boy (voice)

Ámundi Sigurdsson

as Healthy Boy (voice)

Einar Örn Benediktsson

as Peter the Goth (voice)

Stefán Karl Stefánsson

as Special Ad Lib and Extras (voice)