Misaka Mikoto is a fictional character from the anime and light novel series A Certain Magical Index and its spin-off A Certain Scientific Railgun. She is known as the "Railgun" due to her ability to manipulate electricity and launch metal objects at high speeds. As a Level 5 esper, she is one of the most powerful individuals in the city of Academy City. Mikoto has a strong personality, often displaying a mix of confidence and stubbornness. She is a student at Tokiwadai Middle School and is known for her distinctive short brown hair and signature outfit, which includes a white shirt and a brown skirt. Throughout the series, she forms friendships and faces various challenges, showcasing her growth as a character.