Astrogha appears as a giant, humanoid spider. His lower body is that of a spider, but his torso and head resemble something vaguely human. On his head he has several hand-like limbs, used for pushing prey into his mouth. He also has many smaller spider-spawns made of his essence, called 'Children', who act as spies. Astrogha also has the ability to create thick webbing which he uses to constrict prey in. He feeds on human bodies, sucking out their fluids.