Geraint

Sir Geraint was a Knight of Camelot who fought the Living Gargoyles when Cornelius Sigan returned. He was also Arthur's former second-in-command.

Biography
When Cornelius Sigan returned, Geraint organised the defence of Camelot in Arthur's absence and even ordered King Uther to stay indoors for his own safety (The Curse of Cornelius Sigan).

Trivia

 * Sir Geraint was introduced in The Curse of Cornelius Sigan as Arthur's second-in-command. He's a figure from Arthurian Legend, is given a prominent speaking-part, and had several promotional shots taken of him. He's never seen again, and his role is taken over by Sir Leon, who makes his first appearance in the next episode.