After Lucifer's Failed Rebellion in the White City, he and his Generals and their Generals and all of the Fallen Angels under them were cast into the Unholy Realms where they sired the Demon Race and made the Underworld their new home. Among the Fallen Angels, one name stood out - General Kokabiel, a subordinate of the fearsome Samael, who brought forth a profound idea that would shape the destiny of the Underworld. He proposed the creation of a vault, a bastion of darkness where the Unholy Weapons of Mass Destruction (UWMDs) would be amassed, preparing them for the inevitable War with the White City on the prophesied Judgement Day.
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The Abomination Vault serves as an armory of Unholy Weapons of Mass Destruction (UWMD) meticulously crafted by the Dukes of the Underworld, in preparation for the anticipated Day of Judgement. This Vault, hidden within The Underworld, is securely locked with an Absolution Matrix, ensuring its impregnability until the advent of Judgement Day. Once any Weapons are deposited into the Abomination Vault, retrieval becomes impossible through conventional means. Its name, "Abomination Vault," reflects its purpose—to house Weapons designed for waging war on the Holy Realms, with the potential to unleash devastating destruction.