Messiah

The Messiah in the anime

The Messiah, or Sovereign in the English dub, was the being Sailor Uranus, Sailor Neptune, and Sailor Pluto were looking for during the Infinity arc of the manga and Sailor Moon S season of the anime. In the anime, she was depicted as a woman with long flowing hair and butterfly wings on her back.

The Messiah was revealed to be Sailor Moon during the battle with Pharaoh 90.