A lycanthrope is a fierce wolfish creature the size of a bear. Commonly termed "werewolf," it has the ability to turn into a man. It has been spotted at Fablehaven at least twice during Midsummer's Eve. Many worked with the Society of the Evening Star. A pair helped invade Obsidian Waste, and some helped kill Roon, an Eternal. Roon slew two on his dais with his silver knife. The Beckoning Grove at Living Mirage had fruit that could transform the eater into a lycanthrope.