| Character | Actor/Actress |
| Merlin | |
| Arthur | |
| Gaius | |
| Uther | |
| Morgana | |
| Gwen | |
| Kilgarrah (The great dragon) | |
| Sir leon | |
| Sir Gwaine | |
| Sir Percival | |
| Sir Elyan | |
| Agravaine | |
| Morgause | |
| | Character | Actor/Actress |
| (Child) Mordred | |
| (Adult) Mordred | |
| Sir Lancelot | |
| Nimueh | |
| Hunith | |
| Cenred | |
| Ygraine | |
| Lady Catrina | |
| Sidhe Elder | |
| Freya | |
| Princess Mithian | |
| Balinor | |
| Lady Vivian | |
|