Vru'nyrith

Vru'nyrith, One that Watches from Beneath and Beyond, the Unknown Forebearer, the Gnarled and Writhing Lord (Any evil alignment when dealing indirectly with mortals and other "lesser" beings, Chaotic Evil when dealt directly)

an ancient god of cosmic chaos. he is mostly unknown to many mortals and immortals in the known planes, only a few handful know of his presence and live to spread his insane evil and chaos. mostly a writhing undefinite mass of shadow and "flesh" with the occasional eyes and barbs and teeth showing, he forms into a vaguely humanoid  figure with sinews twisted and knotted with a lower torso either having tendrils or a spider/insect-like set of limbs. his head or face is gaping maw that looks like a shadowy, smokey vacuum mass that sucks the nearby reality nearby.