Ami Mizuno, also known as Sailor Mercury, is a brilliant student and a key character in the anime series Bishoujo Senshi Sailor Moon. Known for her intelligence and analytical skills, Ami is often seen as the brains of the Sailor Guardians. She is a kind and gentle soul, with a passion for learning and a love for books. Ami transforms into Sailor Mercury, using her intellect and water-based powers to assist her fellow Guardians in their battles against the forces of evil. Her compassionate nature and loyalty make her an invaluable friend and ally.