Diableri of Chaos was one of the Proemial Gods, cosmic beings originating from the dawn of time who were responsible for helping shape the virgin universe into what it was meant to become. Diableri created the Chaos Sprites, which helped him serve the cosmic balance by sowing chaos in order. When the Proemial Gods' purpose was fulfilled, Diableri sought a new purpose. He desired to remake the universe in his own image and he corrupted the other Proemial Gods into joining his cause, creating a civil war amongst them. This conflict ultimately reached Galactus, and Diableri was personally slain by the Devourer of Worlds.^[1]

God-level powers that likely rivaled those of Galactus