The Dragon / Voice of the Dragon (65 episodes, 2008-2012)
Merlin (65 episodes, 2008-2012)
Arthur (65 episodes, 2008-2012)
Gaius (65 episodes, 2008-2012)
Gwen (65 episodes, 2008-2012)
Morgana (65 episodes, 2008-2012)
Uther Pendragon (43 episodes, 2008-2012)
Sir Leon (39 episodes, 2009-2012)
Sir Gwaine / Gwaine (30 episodes, 2010-2012)
Sir Percival (26 episodes, 2010-2012)
Sir Elyan / Elyan (21 episodes, 2010-2012)
Agravaine (13 episodes, 2011)
Geoffrey of Monmouth (12 episodes, 2008-2011)
Morgause (11 episodes, 2009-2011)
Mordred (11 episodes, 2012)
Lancelot (6 episodes, 2008-2011)
Nimueh (4 episodes, 2008)
Hunith (4 episodes, 2008-2011)
Cenred (4 episodes, 2010)
Mordred (3 episodes, 2008-2009)
Iseldir (3 episodes, 2008-2011)
Ygraine (3 episodes, 2009-2010)
Helios (3 episodes, 2011)
The Guard (3 episodes, 2009)
Audrey (3 episodes, 2011-2012)
King Odin (2 episodes, 2009-2012)
Lady Catrina (2 episodes, 2009)
Jonas (2 episodes, 2009)
Tom (2 episodes, 2008)
Alator (2 episodes, 2011-2012)
Sefa (2 episodes, 2012)
Sidhe Elder (2 episodes, 2008-2010)
Tom (2 episodes, 2009-2010)
Freya (2 episodes, 2009-2010)
Ewan / Orn (2 episodes, 2010-2011)
Evoric (2 episodes, 2010)
The Dochraid (2 episodes, 2011-2012)
Tristan (2 episodes, 2011)
Princess Mithian (2 episodes, 2011-2012)
Gregory (2 episodes, 2008)
Isolde (2 episodes, 2011)
Black Knight / The Afanc (2 episodes, 2008)
Beroun (2 episodes, 2012)
Eira (2 episodes, 2012)
Morris (2 episodes, 2008)
Ghost Boy (2 episodes, 2010)
Ragnor (2 episodes, 2012)
Balinor (2 episodes, 2009-2012)
Ruadan (2 episodes, 2012)
The Euchdag (2 episodes, 2012)
Queen Annis (2 episodes, 2011-2012)
Ferryman (2 episodes, 2011)
Caerleon's Guard / Guard (2 episodes, 2011)
The Cailleach (2 episodes, 2011)
Tyr Seward (1 episode, 2012)
Kanen (1 episode, 2008)
Knight Valiant (1 episode, 2008)
Edwin (1 episode, 2008)
Cerdan (1 episode, 2008)
Halig (1 episode, 2009)
Sir Radnor (1 episode, 2009)
Gilli (1 episode, 2010)
Alice (1 episode, 2010)
Borden (1 episode, 2011)
John Howden (1 episode, 2011)
Ari (1 episode, 2012)
Niede (1 episode, 2012)
Daegel (1 episode, 2012)
Sophia (1 episode, 2008)
William (1 episode, 2008)
Devlin (1 episode, 2008)
Alvarr (1 episode, 2009)
Joseph (1 episode, 2009)
Kelda (1 episode, 2009)
Cathryn (1 episode, 2009)
The Manticore (1 episode, 2010)
Princess Elena (1 episode, 2010)
Nollar (1 episode, 2010)
Mary Howden (1 episode, 2011)
Caerleon (1 episode, 2011)
Atorloppe (1 episode, 2012)
Matthew (1 episode, 2008)
Anhora (1 episode, 2008)
Tauren (1 episode, 2008)
Steward (1 episode, 2008)
Stallholder (1 episode, 2008)
Myror (1 episode, 2009)
Enmyria (1 episode, 2009)
King Alined (1 episode, 2009)
Sir Robert (1 episode, 2009)
The Goblin (1 episode, 2010)
Lord Godwyn (1 episode, 2010)
Taliesin (1 episode, 2010)
Tindr (1 episode, 2010)
Fermin (1 episode, 2010)
Mary (1 episode, 2010)
The Gleeman (1 episode, 2011)
Befelan (1 episode, 2012)
Valdis (1 episode, 2012)
Lady Helen / Mary Collins (1 episode, 2008)
Guard 1 (1 episode, 2008)
Trickler (1 episode, 2009)
Grunhilda (1 episode, 2010)
Dagr (1 episode, 2010)
Geldred (1 episode, 2011)
King Rodor (1 episode, 2012)
Osgar (1 episode, 2012)
Alrick (1 episode, 2012)
Aulfric (1 episode, 2008)
Guard 2 (1 episode, 2008)
King Olaf (1 episode, 2009)
Guard (1 episode, 2009)
Ebor (1 episode, 2010)
Bayard (1 episode, 2008)
Bandit (1 episode, 2008)
Cedric (1 episode, 2009)
Lady Vivian (1 episode, 2009)
Kendrick (1 episode, 2009)
Evan (1 episode, 2008)
Aredian (1 episode, 2009)
Asgerd (1 episode, 2009)
Bandit (1 episode, 2009)
Druid Boy (1 episode, 2011)
Kara (1 episode, 2012)
Forridel (1 episode, 2009)
Innkeeper (1 episode, 2009)
Cylferth (1 episode, 2010)
The Vilia (1 episode, 2011)
The Sarrum (1 episode, 2012)
Gelda Seward (1 episode, 2012)
Voice of the Black Knight (1 episode, 2008)
Ewan (1 episode, 2008)
Aglain (1 episode, 2009)
William (1 episode, 2009)
Sir Geraint (1 episode, 2009)
Beatrice (1 episode, 2009)
Althild (1 episode, 2010)
Sir Owain (1 episode, 2008)
Dungeon Guard (1 episode, 2008)
Hengist (1 episode, 2009)
Annie (1 episode, 2009)
Eldred (1 episode, 2009)
Grettir (1 episode, 2010)
Rider (1 episode, 2010)
Sir Ethan (1 episode, 2010)
Guard (1 episode, 2010)
George (1 episode, 2011)
Finna (1 episode, 2012)
Queen Mab (1 episode, 2012)
Bronwen (1 episode, 2008)
Sir Cador (1 episode, 2008)
Sir Pellimor (1 episode, 2008)
Guard No. 1 (1 episode, 2009)
Rowena (1 episode, 2009)
Sir Oswald (1 episode, 2010)
The Fisher King (1 episode, 2010)
Rose (1 episode, 2010)
Lamia (1 episode, 2011)
Eoghan (1 episode, 2011)
Sindri (1 episode, 2012)
Fyren (1 episode, 2009)
Jarl (1 episode, 2010)
Inn Keeper (1 episode, 2010)
Lochru (1 episode, 2012)
Albin (1 episode, 2012)
The Apothecary (1 episode, 2009)
Bandit (1 episode, 2010)
Helios' Servant (1 episode, 2011)
Gerrin (1 episode, 2012)
Druid Boy (1 episode, 2010)
Derian (1 episode, 2011)
Guard (1 episode, 2012)
Drea (1 episode, 2011)
Camelot Guard (uncredited) (5 episodes, 2008-2012)
Knight (uncredited) (4 episodes, 2012)
Clown / La villageoise / Une villageoise (uncredited) (3 episodes, 2009-2012)
Bandit (uncredited) (3 episodes, 2009-2011)
Saxon swordsman / Saxon swordfighter (uncredited) (3 episodes, 2012)
Camelot Guard / Camelot Knight (uncredited) (2 episodes, 2009-2010)
Council Elder (uncredited) (2 episodes, 2011)
Southron Warrior (uncredited) (2 episodes, 2011)
Camelot Knight (uncredited) (2 episodes, 2011)
Odin's Man / Woods Bandit (uncredited) (2 episodes, 2012)
Castle Guard (uncredited) (1 episode, 2008)
Villager (uncredited) (1 episode, 2008)
Paganum (uncredited) (1 episode, 2008)
Palace Guard (uncredited) (1 episode, 2008)
One of the Order of Four (uncredited) (1 episode, 2008)
Messenger (uncredited) (1 episode, 2009)
Guard (uncredited) (1 episode, 2009)
Thug Hit with Jug (uncredited) (1 episode, 2010)
Camelot Knight (uncredited) (1 episode, 2011)
Mercenary (uncredited) (1 episode, 2011)
Worker (uncredited) (1 episode, 2012)
Guard (uncredited) (1 episode, 2012)