Whitebrim

Whitebrim is a guild member of Ainz Ooal Gown and regarded as one of the 41 Supreme Beings by the NPCs of the Great Tomb of Nazarick. He is the designer of the homunculus maids that work in Nazarick. He was obsessed with maids and always went about saying "Maid uniforms are justice!"

In real life, Whitebrim is a mangaka, and the heroine of the manga he's drawing is also a maid. He always seems to be making his assistants cry with his excessive attention to detail.

(Source: Overlord Wikia)