Demiurge

The Demiurge is a malevolent figure from varied belief systems, especially gnosticism - while many confuse the Demiurge with an "evil God" stereotype it is actually a figure below that of the Supreme Being, thus in many ways is a paradoxal deity that lords over the physical plane of existence but is below that of the spiritual realm.

as the creator of the physical world the Demiurge is obsessed with physical things and its own power, seeking to keep humanity from entering the spiritual realm and thus escaping its rule - the concept of the Demiurge has its roots in much older religions and myths, in which their were often two equally omnipotent deities, one of divine creation and another of divine destruction (a concept later known as dualism).