Amy "Sailor Mercury" Anderson is one of the main protagonists of the anime series, Sailor Moon. She is the brains of the Sailor Scouts and the regally and unbearably beautiful princess of the planet Mercury. She really like studying which is why she's really smart. In fact, she is the top smart student at Serena's school. As Sailor Mercury, her powers are mainly water. She is one of the four Sailor Scouts of the inner solar system.