Thomas Brodie-Sangster

Character: Firedrake (voice)

Freddie Highmore

Character: Ben (voice)

Felicity Jones

Character: Sorrell (voice)

Patrick Stewart

Character: Nettlebrand (voice)

Sanjeev Bhaskar

Character: Mad Doc (voice)

Nonso Anozie

Character: Mighty Djinn (voice)

Meera Syal

Character: Subisha Gulab (voice)

Alex Norton

Character: Gravelbeard (voice)

Peter Marinker

Character: Slatebeard (voice)

Stephen Hogan

Character: Spinecrackle (voice)

Glenn Wrage

Character: Bottleneck (voice)

Eric Meyers

Character: Sulphurbreath (voice)

William Vanderpuye

Character: Stonebeard (voice)

David Brooks

Character: Professor Greenbloom (voice)

Ewan Bailey

Character: Sorrel's Dad (voice)

Alison Dowling

Character: Sorrel's Mom (voice)

Glen McCready

Character: Granitface (voice)

Jimmy Hilbbert

Character: Twigleg (voice)