| 角色 | 饰演者 | 角色介绍 |
| Merlin (34 episodes 2008-2010) | 科林·摩根 | |
| Arthur (34 episodes 2008-2010) | 布莱德利·詹姆斯 | |
| Uther Pendragon? (33 episodes 2008-2010) | 安东尼·海德 | |
| Morgana (34 episodes 2008-2010) | 凯蒂·麦克格拉思 | |
| The Dragon (33 episodes 2008-2010) | 约翰·赫特 | |
| Gwen (33 episodes 2008-2010) | 安琪儿·库碧 | |
| Nimueh (4 episodes 2008) | 米歇尔·雷恩 | |
| Hunith (3 episodes 2008) | Caroline Faber | |
| Geoffrey of Monmouth (8 episodes 2008-2010) | Michael Cronin | |
| Tom (2 episodes 2008) | David Durham | |
| Gregory (2 episodes 2008) | Gary Oliver | |
| Black Knight? (2 episodes 2008) | Rick English | |
| Morris (2 episodes 2008) | Ed Coleman | |
| Sir Leon (11 episodes 2009-2010) | Rupert Young | |
| Mordred (3 episodes 2008-2009) | 阿沙·巴特菲尔德 | |
| Guard (3 episodes 2009) | Rhys Rusbatch | |
| Jonas (2 episodes 2009) | 亚当·戈德利 | |
| Lady Catrina (2 episodes 2009) | Sarah Parish | |
| Lancelot (2 episodes 2008-2009) | 桑地亚哥·卡布瑞拉 | |
| Gaius (33 episodes 2008-2010) | Richard Wilson | |
| Morgause (6 episodes 2009-2010) | 艾米丽雅·福克斯 | |
| Ygraine (3 episodes 2009-2010) | 彭雅思 | |
| Cenred (3 episodes 2010) | 汤姆·伊莱斯 | |
| Sidhe Elder (2 episodes 2008-2010) | Michael Jenn |
