Abyss' origins are unrevealed. He has been described as a para-demon. He apparently travels from dimension to dimension, consuming everything in those realms, and then moves on. Abyss has some undefined past history and enmity with the unnamed father of Argon. Having consumed everything within one reality, Abyss hungered for the Earth-616 dimension. Whether it was the explosion itself, or simply the sudden entrance of matter to his realm is unclear, but Abyss appeared to be, at least temporarily dispersed.