Stolas is the thirty-sixth spirit of the Goetia. He teaches astronomy to whoever summons him. Stolas is often associated with the company of the same name, Stolas, whose equipment is used by the ASO. There is no direct evidence linking the demon to the company; however, much of the equipment Dr. Kel works with features strange and eerie details that hint at its possible demonic origin. The company also uses the image of Stolas as its mascot.