Height: 161 cm (5'3")
Classification: Esper
School: Tokiwadai Middle School
Esper Power: Electromaster
Power Level: 5

One of the main heroines in the Toaru Majutsu no Index series and the protagonist of her side story, Toaru Kagaku no Railgun. An Esper of Academy City, her powers are ranked Level 5, the highest rank for the most powerful Espers. She ranks as third-strongest out of the seven people who hold this rank in Academy City.