Demiurge

Demiurge, is the Floor Guardian of the 7th Floor of the Great Tomb of Nazarick, the Commander of the NPC defenses, and the 2nd in command of the Floor Guardians. He is the creation of Ulbert Alain Odle. In the New World, under the guise of a powerful Demon Emperor known as Jaldabaoth, he led his demon army to and started a battle in the Royal Capital of the Re-Estize Kingdom, and also led the demi-human coalition in an assault on the Roble Holy Kingdom. As he is a demon, Demiurge is considered to be one of the cruelest members in Nazarick, taking great joy in the suffering of other races. Additionally, he was programmed to act that way in his character settings by Ulbert. For that reason, he enthusiastically performs magic experiments on the prisoners sent to him, viewing them as nothing less than toys for his own amusement. He passionately enjoys inciting hateful feelings and treacherous thoughts among the victims of his experiments for his own goals. Demiurge takes great pleasure in seeing the chaos and pandemonium he has incited within the hearts of his subject. It came to a point where he had finally earn the hate by all his subjects of different races, much to his delight. As the Commander of the NPC defenses, he has a high level of intelligence and strategic thinking. He would also act apologetic towards his master on the behalf of the incompetent Floor Guardians barring Albedo for not being able to clearly understand a portion of Ainz's schemes but himself and the Overseer. He is keenly analytical on whatever plans Ainz had in mind for him to do along with the other NPCs, quickly deducing why his master intentionally allows Cocytus to borrow forces of low-tier undead rather than stronger ones.