Katherine Langford
Nimue (10 eps)
Devon Terrell
Arthur (10 eps)
Gustaf Skarsgård
Merlin (10 eps)
Daniel Sharman
Weeping Monk (10 eps)
Sebastian Armesto
King Uther Pendragon (10 eps)
Lily Newmark
Pym (10 eps)
Peter Mullan
Father Carden (10 eps)
Shalom Brune-Franklin
Sister Igraine (10 eps)
Matt Stokoe
Gawain (10 eps)
Billy Jenkins
Squirrel (10 eps)
Bella Dayne
Red Spear/Viking Captain/Guinevere (5 eps)
Polly Walker
Lady Lunette (5 eps)
Tobi King Bakare
Josse (2 eps)
Clive Francis
Pope Abel (2 eps)
Richard Henderson
Gaston (1 eps)