Iain De Caestecker
Arthur Pendragon (10 eps)
Stuart Campbell
Derfel Cadarn (10 eps)
Ellie James
Nimue (10 eps)
Steven Elder
Bishop Bedwin (10 eps)
Valene Kane
Morgan (10 eps)
Simon Merrells
Gundleus (10 eps)
Ken Nwosu
Sagramor (10 eps)
Matt Mella
Lanval (9 eps)
Tatjana Nardone
Ladwys (7 eps)
Andrew Gower
Sansum (7 eps)
Olumide Olorunfemi
Lunete (6 eps)
Billy Postlethwaite
Cadwys (6 eps)
Daniel Ings
Owain (6 eps)
Nathaniel Martello-White
Merlin (6 eps)
Aneirin Hughes
Gorfydd (6 eps)
Charlie Duncan
Ralla (6 eps)
Sagar Arya
Tewdric (6 eps)
Jordan Alexandra
Guinevere (5 eps)
Gwïon Morris Jones
Culwyn (5 eps)
Emily John
Ceinwyn (4 eps)
Gabriel Tierney
Tristan (4 eps)
Keith Dunphy
Raince (3 eps)
Sifiso Mazibuko
Hywel (2 eps)
Grace Ackary
Norwenna (2 eps)
Enoch Frost
Ligessac (2 eps)
Eddie Marsan
Uther (2 eps)
Faith Delaney
Sarlinna (2 eps)
San Shella
Lohilt (2 eps)
Cy Foxx
Dumonian Leader (1 eps)
Jordan Dark
Young Derfel (1 eps)
Lucy Allix
Young Nimue (1 eps)
Bryony Morgan
Tattooist (1 eps)
Rob Murphy
Dumnonian Guard (1 eps)
Lily Williams
Younger Nimue (1 eps)
Charlotte Workman
Sylvia (1 eps)
Angus Salisbury
Bowen (1 eps)
Craig Parkinson
Aelle (1 eps)
Rhodri Miles
Brother John (1 eps)
Miranda Shamiso
Wenhaver (1 eps)
Kevin Metcalfe
Siluarian Warrior (1 eps)
Carl Andersson
Wlenca (1 eps)
Joshua Frater-Loughlin
Bossk (1 eps)
Oliver Morgan-Thomas
Dumnonian Warrior (1 eps)
Ned Dennehy
Malldyn (1 eps)
Frank Bourke
Ultan (1 eps)