Keel

Keel was the son of Sybilla and brother of Effra. Under the full moons of Priplanus he turned into a werewolf and menaced Dr. Smith on several occasions. He was somewhat slow-witted and mute in his normal form, and was ordered about by his mother Sybilla and sister Effra. His sister had some control over his ferocious nature when he is in his werewolf form.