Sailor Mercury (Girlfriend)

Ami Mizuno (水野 亜美 Mizuno Ami?, "Amy" in Spain and America) is the "bookworm" at Usagi's school. She is a very intelligent girl, with an IQ of 300, capable of becoming Sailor Mercury (セーラーマーキュリー Sērā Mākyurī?, translated in Spain as "Mercury Warrior"); the avenger of knowledge, capable of controlling water in its liquid, solid, gaseous, and even mist states. [110] She is characterized by her shyness and her passion for studying, as well as a need to protect others. She yearns to follow in her mother's footsteps in the study of medicine; she is the most analytical of the group.

She's a magical girl who fights evil under the identity of Sailor Mercury. She's a slim woman with blue hair.