Merlin (Sam Neill) Frank Glaubrecht Morgan Le Fey (Helena Bonham Carter) Diana Borgwardt König Constant (John Gielgud) Wolf Rüdiger Reutermann König Vortigern (Rutger Hauer) Thomas Danneberg Mountain King [Stimme] (James Earl Jones) ? Mab (Miranda Richardson) Barbara Ratthey Herrin vom See (Miranda Richardson) Anita Lochner Nimue (Isabella Rossellini) Susanna Bonaséwicz Frik (Martin Short) Lutz Mackensy Arthur (Paul Curran) Oliver Feld Guinevere (Lena Headey) Carola Ewert Lancelot (Jeremy Sheffield) Uwe Büschken Uther Pendragon (Mark Jax) Bernd Schramm Lord Ardente (John McEnery) Werner Ehrlicher Cornwall (Thomas Lockyer) Viktor Neumann Mordred (Jason Done) Michael Iwannek Ambrosia (Billie Whitelaw) Bettina Schön Junger Merlin (Daniel Brocklebank) Gerrit Schmidt-Foß Junge Nimue (Agnieszka Koson) Nana Spier Sir Boris (Roger Ashton-Griffiths) Frank Ciazynski Gawain (Sebastian Roché) Torsten Michaelis Lady Igraine (Rachel de Thame) ? Lord Lot (John Turner) Helmut Krauss Sir Hector (Keith Baxter) ? Lady Elaine (Janine Eser) Andrea-Kathrin Loewig Wahrsager (Peter Woodthorpe) Hans Teuscher Sir Gilbert (Robert Addie) Andreas Hosang Sir Egbert (Nickolas Grace) Uwe Karpa 1. Architekt (Peter Benson) Georg Tryphon Neuer Architekt (John Tordoff) Eberhard Prüter Father Abbot (Timothy Bateson) Klaus Bergatt Doktor (Peter Eyre) Norbert Gescher Assistent des Doktors (Vernon Dobtcheff) Thomas Hailer Assistent des Doktors (Peter Bayliss) Klaus Tilsner