Misaka Mikoto is the main character of the anime and manga series. She is also known as the "Railgun". She is one of the only level five students in her city. She is best friends and attends school with Shirai Kuroko.
Misaka's personality is energetic, laid back and tomboyish. She likes to win and be victorius over others and strives to be the best she can be. She is short tempered and can get anoyed easily.