List of Merlin characters

This is a list of characters in the BBC fantasy drama television series Merlin.
Note: All characters, including main and recurring characters, are listed in alphabetical order by their first name.

  = Main cast (credited)
  = Recurring cast (4+)
  = Guest cast (1-3)
Character Portrayed by Series
Series 1
(2008)
Series 2
(2009)
Series 3
(2010)
Series 4
(2011)
Series 5
(2012)
Main
Merlin Colin Morgan Main
Guinevere Angel Coulby Main
Arthur Pendragon Bradley James Main
Morgana Pendragon Katie McGrath Main
Uther Pendragon Anthony Head Main Guest
Gaius Richard Wilson Main
Agravaine de Bois Nathaniel Parker Main
Recurring
The Great Dragon Kilgharrah John Hurt Recurring
Geoffrey of Monmouth Michael Cronin Recurring
Hunith Caroline Faber Guest Guest
Nimueh Michelle Ryan Recurring
Tom David Durham Guest
Sir Gregory Gary Oliver Recurring
Morris Ed Coleman Recurring
Sir Lancelot Santiago Cabrera Guest
Mordred Asa Butterfield (child) Guest
Alexander Vlahos (adult) Recurring
Iseldir Trevor Sellers Guest Guest
Sidhe Elder Michael Jenn Guest Guest
Sir Leon Rupert Young Recurring
Morgause Emilia Fox Guest Recurring Guest
Ygraine Pendragon Alice Patten Guest
Freya Laura Donnelly Guest
Balinor John Lynch Guest Guest
Sir Gwaine Eoin Macken Recurring
Sir Elyan Adetomiwa Edun Guest Recurring
Cenred Tom Ellis Recurring
Sir Percival Tom Hopper Guest Recurring
Audrey Zee Asha Guest
Helios Terence Meynard Guest
Alator Gary Lewis Guest
Queen Annis Lindsay Duncan Guest
The Dorchraid Maureen Carr Guest
Princess Mithian Janet Montgomery Guest
Beroun Barry Aird Guest