Sugimori talked about how N’s concept artwork came about. He revealed that Junichi Masuda, director of these games, was the creator who came up with the design specifications for N. He asked the designers at Game Freak to “design a kind of genius character”, so they made him look like a cool guy with an androgynous appearance.

https://nintendosoup.com/pokemon-black-and-whites-n-original-design-looked-really-creepy/