Tomer Eshed Director Felicity Jones Sorrell Voice Freddie Highmore Ben Voice Thomas Brodie-Sangster Firedrake Voice Patrick Stewart Nettlebrand Voice Nonso Anozie Mighty Djinn Voice Sanjeev Bhaskar Mad Doc Voice Meera Syal Subisha Gulab Voice Stephen Hogan Spinecrackle Voice Johnny Smith Screenwriter Oliver Berben Producer Martin Moszkowicz Producer, Executive Producer Marina Voeth Producer Olaf Aue Cinematographer Jens Prausnitz Film Editing Stefan Maria Schneider Original Music Alexander Pohl Production Design