In the beginning, there was the Void.
Empty, formless, infinite. With neither matter, nor energy.
Perfect.
The Void became self-aware. A consciousness was formed. A consciousness which luxuriated in its solitude, and reveled in its formlessness. A consciousness which only wished to be left alone in its cold, dark home.
The perfect silence of the Void was ripped open with a blinding flash of hot light. The Void screamed in agony as a single being of immense power stepped into a new, dark universe. The Void coalesced, pulling energy into itself and giving birth to itself in spiritual, energetic form.
Instinctively, the Void took on the opposite characteristics of the Intruder. Where the Intruder was love, light, and hope, the Void became fear, darkness, and despair. Where the Intruder was compassion and happiness, the Void became cruelty and rage. The Intruder was Kuan-Yin, Goddess of Creation, and so the Void became Exterminis, God of Destruction.
The Eternal War had begun.