Johnny Capps Creator Julian Jones Creator, Writer Jake Michie Creator Julian Murphy Creator Colin Morgan Merlin Actor Bradley James Arthur Pendragon Actor Anthony Head Uther Pendragon Actor Richard Wilson Gauis Actor Angel Coulby Gwen Actor Katie McGrath Morgana Actor John Hurt The Great Dragon Voice Rupert Young Guest Star Emilia Fox Guest Star Alice Patten Guest Star Matthew Barker Guest Star Tom Ellis Guest Star Jake Phillips Guest Star Jeremy Webb Director