"Demiurge is a prominent character in the popular Japanese manga series ""Overlord (WN)."" He is a powerful demon that serves as one of the main antagonists in the series. Demiurge is an intelligent and cunning strategist, who is fiercely loyal to his master, the powerful sorcerer, Ainz Ooal Gown.

Demiurge is described as having a humanoid appearance with black wings, sharp horns, and sharp teeth. He dresses immaculately in a black suit and is always seen carrying a briefcase with him. Demiurge is also an expert in martial arts and has several powerful magical abilities that make him a force to be reckoned with.

Demiurge's primary role in the series is to assist Ainz with managing their dominion in the New World. He is responsible for the day-to-day operations of Nazarick, the underground tomb that serves as their base of operations. Demiurge is also responsible for recruiting new members to Nazarick, conducting experiments, and managing their intelligence network.

Despite his fearsome appearance and reputation, Demiurge is a complex character. He is a master manipulator and is known for his ability to play mind games with his opponents. He is also deeply committed to serving his master, Ainz, and will do anything to further his agenda.

Interestingly, Demiurge's ultimate goal is to bring about the destruction of the New World. He believes that by creating chaos and destruction, the inhabitants of the New World will be forced to turn to Ainz and Nazarick for protection. This will ultimately lead to the domination of the New World by Ainz and his followers.

In conclusion, Demiurge is a fascinating character in the world of ""Overlord (WN)."" He is a powerful demon with formidable abilities and an unshakable loyalty to his master, Ainz. Demiurge is also a master manipulator and strategist, who is committed to bringing about the ultimate domination of the New World by Ainz and Nazarick."