Yarisol'mün is the only female alfär sorcerer (PHANG). She is described as a "shy, weak, klutzy, pathetic excuse for a soldier" and a "skinny wee thing, of indeterminate age, with pallid skin and lanky blonde hair." (The Labyrinth Index)
She is known by the nickname Jar-Jar because she stepped in unicorn droppings while interred in Camp Tolkien.
If she were human, she would have autism spectrum disorder.
She performs the Ritual of Spies and Liars on Jonquil Carpenter, stealing her identity.