La Andromeda Promethium II  

Millennial Queen, Yayoi Yukino, ラー·アンドロメダ·プロメシューム

Every millennium, a female leader called the Millennial Queen is dispatched from La-Metal to covertly govern Earth and lead an underground organization that manages the entire planet in secret. Currently, Promethium, also known as Yukino Yayoi on Earth, holds this position.