Nathaniel Parker (pictured), meanwhile, has a recurring role as Arthur’s uncle Agravaine. “Nathaniel is great,” says Colin Morgan. “Agravaine is Arthur’s right-hand man from the beginning in overseeing Camelot, but we soon learn he is not all he seems. He is our new major traitor, because he is Morgana’s mole at Camelot.”

Nathaniel Parker (pictured), meanwhile, has a recurring role as Arthur’s uncle Agravaine. "Nathaniel is great," says Colin Morgan. "Agravaine is Arthur’s right-hand man from the beginning in overseeing Camelot, but we soon learn he is not all he seems. He is our new major traitor, because he is Morgana’s mole at Camelot."