Ami Mizuno

Sailor Mercury (セーラーマーキュリー Sērā Mākyurī) is a fictional character in the Sailor Moon manga series created by Naoko Takeuchi. The alternate identity of Ami Mizuno (水野 亜美 Mizuno Ami), a teenage Japanese schoolgirl, she is a member of the Sailor Soldiers, female supernatural fighters who protects the Solar System from evil.

Sailor Mercury is the first Sailor Soldier to be discovered by Sailor Moon and serves as the "brains" of the group. She is highly intelligent and can use a supercomputer to collect useful information in battles.