Thal'zaroth, a being (or non-being) that surpasses all concepts of evil, darkness, and corruption. Known as the most evil omnimalevolent entity to ever exist, Thal'zaroth's very essence is woven from the darkest aspects of the universe, consuming and distorting all that comes in contact with it. Unlike other malevolent entities, Thal'zaroth does not simply seek power or control, but the total annihilation of all things-life, existence, and even the very idea of creation itself.
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