Galaxia

QUICK BIO
Sailor Galaxia is the head villain in the last arc of Sailor Stars. She is looking for star seeds so she can take over the entire galaxy. She sends to Earth her servants, the Sailor Animamates. In the end she realized she really didn't need the rather inefficient Animamates and kills them each one by one, and enters the battle herself.

SOURCE: Bishoujo Senshi Sailormoon