A brilliant, yet eccentric, geomancer who has a need to control everything and everyone in his life. When he loses control he has panic attacks. He has out lived the normal life expectancy of a normal human, possibly by using his skills as a geomancer to prelong his life. He resides in Nyriandiol and takes Tiaan as his apprentice, shortly before being captured by the lyrinx. Once captured Gilhaelith is "almost" willing in his aid of them, Gilhaelith soon regrets this as it becomes clear that Matriarch Gyrull has no intention of letting him go. Though "almost willing" he stills keeps in mind his goal in life, to fully understand and control the forces of the world, by using his geomancers globe (a very detailed scaled model of Santhenar) to accomplish his life's aim.