Gaius

"The heart of old Camelot."

- Agravaine, on Gaius

GaiusGaius is aged around 72 in Series 3 as he stated in 'Love in the Time of Dragons that a book was given to him by Alice. The incription inside the book states it was given to him on his 50th birthday, by Alice, before the Great Purge, which was 22 years earlier. He is still alive in Series 5, which takes place three years after series 4, making him 77 years old. is the Court Physician of Camelot and has been for the last twenty-seven to twenty-nine years, since the birth of Arthur Pendragon. Additionally, he has a great knowledge of sorcery and the legends associated with it, having studied and practised it for many years before the Great Purge. He is Merlin’s mentor and friend, and one of the few people who know of his magical abilities.