Like his siblings, Arackniss is a Spider Demon. He is rather short,[1] with him being described as only slightly taller than Niffty.[note 1]

Arackniss is thin and hunched over, with a stern demeanor. He is predominantly a charcoal grey color, including his hair, which is flopped over and shorter in the back, longer in the front.

Reflective on his spider theming, Arackniss has eight thin eyes; his six smaller eyes are in opposite positions on either side of his face, with two on top of his left