manus father of the abyss

Manus, Father of the Abyss is the final boss and main antagonist of Dark Souls I's DLC expansion Artorias of the Abyss, and an overarching antagonist of the trilogy as a whole.

He is an eldritch, ape-like monster (originally an ordinary human before losing control of his dark soul) with extra red eyes on his body and an oversized left arm.