Serket

Serkets are large creatures which have the apperance of a scorpion about the size, if not larger, than a human.

History
When Morgana searched for the Druids, she found herself surrounded by Serkets. She was stung on the leg before being saved by Aglain (The Nightmare Begins). Later, at the Druid camp, her wound was taken care of.

After Merlin was caught eavesdropping on Morgause and Morgana he was chained up by King Cenred's men. Morgause enchanted the chains so that the more Merlin struggled. the tighter they became. He was then left on his own surrounded by Serkets. He tried to break his chains using magic but failed. Then he just forced them away with magic, but eventually he was struck by a Serket sting in the back. Merlin called for Kilgarrah before falling unconcious. Kilgharrah then came to Merlin's rescue and killed the Serkets with his fiery breath (The Tears of Uther Pendragon).

Trivia
In Egyptian mythology, Serket is the goddess of healing stings and bites who originally was the deification of the scorpion.