Caesar emerges as the primary antagonist, a tyrannical ruler who seized power during the Overfiend's dormancy. His cybernetically enhanced form reflects his evolution into a mechanized despot. To consolidate his authoritarian grip, Caesar enslaves a newly emerged race of demon beasts, ruling through extreme cruelty and oppressive systems. A core element of his characterization involves an incestuous and abusive dynamic with his daughter.

His biological experiments involve impregnating statues to generate offspring, resulting in the birth of the Lord of Chaos, the destined adversary to the Overfiend. A violent uprising by the enslaved demon beasts leads to his daughter's capture. This event triggers the Overfiend's awakening. The ensuing conflict between Caesar's forces and the awakened Overfiend escalates into apocalyptic warfare.