Colin Morgan
Merlin (65 eps)
Angel Coulby
Gwen (65 eps)
Bradley James
Arthur (65 eps)
Katie McGrath
Morgana (65 eps)
Richard Wilson
Gaius (65 eps)
John Hurt
The Great Dragon (voice) (65 eps)
Anthony Stewart Head
Uther Pendragon (43 eps)
Nathaniel Parker
Agravaine de Bois (13 eps)
Michael Cronin
Geoffrey of Monmouth (12 eps)
Tom Ellis
Cenred (4 eps)
Eoin Macken
Gwaine (4 eps)
Caroline Faber
Hunith (4 eps)
Asa Butterfield
Mordred (3 eps)
Rhys Rusbatch
Guard (3 eps)
Alice Patten
Ygraine (3 eps)
Tomiwa Edun
Elyan (3 eps)
Trevor Sellers
Iseldir (3 eps)
Terence Maynard
Helios (3 eps)
Zee Asha
Audrey (3 eps)
Sophie Rundle
Sefa (2 eps)
Gary Lewis
Alator (2 eps)
Sarah Parish
Lady Catrina (2 eps)
Adam Godley
Jonas (2 eps)
Erin Richards
Eira (2 eps)
Liam Cunningham
Ruadan (2 eps)
Stephen McCole
Ragnor (2 eps)
David Durham
Tom (2 eps)
Ed Coleman
Morris (2 eps)
Gary Oliver
Gregory (2 eps)
Rick English
The Afanc (2 eps)
Jake Phillips
Ghost Boy (2 eps)
Simon Nehan
Tom (2 eps)
Michael Jenn
Sidhe Elder (2 eps)
Duncan Meadows
Orn (2 eps)
Calum MacPherson
Evoric (2 eps)
Jamie Kenna
Dungeon Guard (2 eps)
Laura Donnelly
Freya (2 eps)
James Greene
Ferryman (2 eps)
Gemma Jones
The Cailleach (2 eps)
Kyle Lima
Guard (2 eps)
Lindsay Duncan
Queen Annis (2 eps)
Miranda Raison
Isolde (2 eps)
Ben Daniels
Tristan (2 eps)
Fintan McKeown
King Odin (2 eps)
Janet Montgomery
Princess Mithian (2 eps)
John Bradley
Tyr Seward (2 eps)
Maureen Carr
The Dochraid (2 eps)
John Lynch
Balinor (2 eps)
Santiago Cabrera
Lancelot (2 eps)
Jonny Coyne
Asgerd (1 eps)
Alexandra Dowling
Kara (1 eps)
Charles Dance
Aredian (1 eps)
Richard Ridings
Halig (1 eps)
David Schofield
King Alined (1 eps)
Kevin Eldon
Trickler (1 eps)
Mark Lewis Jones
King Olaf (1 eps)
Georgia Tennant
Lady Vivian (1 eps)
Jonathan Bryan
Sir Radnor (1 eps)
Joseph Mawle
Alvarr (1 eps)
Emily Beecham
Enmyria (1 eps)
Julian Rhind-Tutt
Edwin Muirden (1 eps)
Mackenzie Crook
Cedric (1 eps)
Rupert Young
Leon (1 eps)
Julian Glover
Lochru (1 eps)
James Fox
King Rodor (1 eps)
Eve Myles
Mary Collins / Lady Helen (1 eps)
Will Mellor
Knight Valiant (1 eps)
Keith Thorne
Ewan (1 eps)
Clive Russell
Bayard (1 eps)
Holliday Grainger
Sophia (1 eps)
Kenneth Cranham
Aulfric (1 eps)
Alun Raglan
Cerdan (1 eps)
Kyle Redmond-Jones
Sir Owain (1 eps)
Sean Francis
Sir Pellinor (1 eps)
Alexander Siddig
Kanen (1 eps)
Joe Dempsie
William (1 eps)
Frank Finlay
Anhora (1 eps)
Richard Riddell
Evan (1 eps)
Jonathan Aris
Matthew (1 eps)
Cal MacAninch
Tauren (1 eps)
Mark Williams
The Goblin (voice) (1 eps)
Louise Dylan
Bronwen (1 eps)
Andy Linden
Devlin (1 eps)
Nicholas Gasson
Steward (1 eps)
Paul Kynman
Sir Cador (1 eps)
Ben Adams
Bandit (1 eps)
Michael Burgess
Stallholder (1 eps)
Christian Bradley
Guard (1 eps)
Christopher Fairbank
Black Knight (voice) (1 eps)
Luke Neal
Sir Geraint (1 eps)
Jack Sandle
Kelda (1 eps)
Adrian Lester
Myror (1 eps)
Alex Price
William (1 eps)
Mike Goodenough
Fyren (1 eps)
Jai Armstrong
Guard (1 eps)
Beth Cordingly
Forridel (1 eps)
Colin Salmon
Aglain (1 eps)
Justin Avoth
Sir Robert (1 eps)
Michael Nardone
Kendrick (1 eps)
James Cosmo
Hengist (1 eps)
Michael Ballard
Bandit (1 eps)
Brian Peck
Eldred (1 eps)
Victoria Finney
Cathryn (1 eps)
Katie Foster
Beatrice (1 eps)
Amanda Fairbank-Hynes
Annis (1 eps)
Samara MacLaren
Rowena (1 eps)
David Sterne
The Apothecary (1 eps)
Jem Wall
Joseph (1 eps)
Alexander Delamere
Innkeeper (1 eps)
Matthew Barker
Guard (1 eps)
Gemma Arrowsmith
Rose (1 eps)
Sarah Counsell
Mary (1 eps)
Andrew Vincent
Dagr (1 eps)
Shend
Ebor (1 eps)
Bill Thomas
Cylferth (1 eps)
Philip Brodie
Sir Ethan (1 eps)
John Hopkins
Sir Oswald (1 eps)
Jonathan Emmett
Inn Keeper (1 eps)
Karl Johnson
Taliesin (1 eps)
Georgia King
Princess Elena (1 eps)
Simon Williams
Lord Godwyn (1 eps)
Miriam Margolyes
Grunhilda (1 eps)
Jody Halse
Fermin (1 eps)
Warwick Davis
Grettir (1 eps)
Ian Peck
Althild (1 eps)
Donald Sumpter
The Fisher King (1 eps)
Pauline Collins
Alice (1 eps)
Eddie Marsan
The Manticore (voice) (1 eps)
Harry Melling
Gilli (1 eps)
Ian Burfield
Nollar (1 eps)
Paul McNeilly
Tindr (1 eps)
Ralph Ineson
Jarl (1 eps)
Raul Griffiths
Druid Boy (1 eps)
Grahame Fox
Rider (1 eps)
Matthew Crawford
Bandit (1 eps)
Katie Moore
Drea (1 eps)
Sarah Beck Mather
The Vilia (1 eps)
Phil Holden
Geldred (1 eps)
James Callis
Julius Borden (1 eps)
Steven Hartley
Caerleon (1 eps)
Robert Maillet
Derian (1 eps)
Leander Deeny
George (1 eps)
Wayne Foskett
John Howden (1 eps)
Melanie Hill
Mary Howden (1 eps)
Charlene McKenna
Lamia (1 eps)
Nicholas Croucher
Druid Boy (1 eps)
Tom Meredith
Eoghan (1 eps)
Gareth Jewell
Helios' Servant (1 eps)
Jane Thorne
Valdis (1 eps)
Gordon Munro
Alrick (1 eps)
Frances Tomelty
Niede (1 eps)
Sian Thomas
Atorloppe (1 eps)
Helen Schlesinger
Befelan (1 eps)
Andrew Tiernan
Osgar (1 eps)
Kelly Wenham
Queen Mab (1 eps)
Veronica Roberts
Gelda Seward (1 eps)
Tony Guilfoyle
Sindri (1 eps)
Giles New
Guard (1 eps)
Alfie Stewart
Daegel (1 eps)
John Shrapnel
The Sarrum (1 eps)
Matthew Clancy
Albin (1 eps)
Mitch Benn
Gerrin (1 eps)
Barry Aird
Beroun (1 eps)
Sorcha Cusack
Finna (1 eps)
Peter Guinness
Ari (1 eps)
Chris McGill
Guard (1 eps)
Phil Davis
The Gleeman (1 eps)