Misaka Mikoto (御坂 美琴 Misaka Mikoto) (born May 2) is a main heroine in Toaru Majutsu no Index and the main protagonist of Toaru Kagaku no Railgun. Introduced in the first volume of the light novels, her role in the story was later expanded in the third volume as well as the release of the Toaru Kagaku no Railgun manga, making her the main heroine of the science side and the second main heroine of the series.and is nicknamed the Railgun due to her signature move. Kamijou Touma coined the nickname Biri-Biri (ビリビリ?) (a Japanese onomatopoeia imitating the sound of electricity) for her and whenever the two meet he usually calls her that, even after his amnesia
Appearance
Mikoto has chestnut brown hair and is often seen wearing a small hair clip. Her eyes are the same color as her hair. She is also shown to have a complex regarding her chest, feeling inferior when compared to girls with bigger bust sizes. She wears the Tokiwadai Middle School school uniform, with white loose/slouch socks with a light brown vest sweater over a white blouse and a grey skirt. She is also known to always wear shorts under every skirt and dress she wears. This surprises an amnesiac Kamijou Touma as she is the only girl who wears boxers instead of panties.
Personality
To most people, she is considered a 'proper lady' (refered as ojou-sama or お嬢様), but in reality, she's short-tempered, prideful, and has an improper attitude with some slight tomboyish tendencies and insecurities, a fact few people know of. Despite this, she is generally friendly and easygoing, and Saten Ruiko and Uiharu Kazari comment on how they are shocked to find that compared to other Level 5's, she doesn't look down on lower-level espers at all. This is probably because she was originally a level 1 esper and became a level 5 esper through very hard work.
Often times she shows an incredibly immature and selfish side and even slight tsundere tendencies when her crush, Touma, insults her. To add to this, childishness, she has an inclination towards cute things, most specifically, Gekota and Kill Bear merchandise. She also likes frog merchandise only if it features Gekota. When she realizes that a stuffed animal another person is carrying is just a regular frog, she immediately loses all of her interest in the stuffed animal. She also has a fear of bugs, as shown in episode 6 of Toaru Kagaku no Railgun.
She has a keen sense of justice, demonstrated by her frequent involvement in the crime-fighting body, Judgment, and her resolve is unshakable as shown when she was willing to lose in a fight against Accelerator on the first move to prove the Sisters Project wrong and save her remaining 9969 sisters (Tree Diagram predicted that she would die in the 185th move). She secretly likes cute things, especially Gekota (a popular frog mascot), and is easily embarrassed. She often goes to Green Mart to read manga for free in her spare time on Mondays and Wednesdays. She's also good at playing the violin and teaches Uiharu Kazari how to play in the Volume 12 of the Light Novel. Furthermore, according to Kuroko, Mikoto naturally acts as a leader, and becomes the center of attention by everyone, yet she cannot mingle with those people regardless of being the center. She states that Mikoto is at the top and defeats her enemies, but she cannot avoid making more enemies at the same time. Moreover, she states that the most important to onee-sama is someone she can feel on the same level as her.
Mikoto has been depicted as being quite intelligent, only natural as she is in Tokiwadai Middle School, a school that is meant to create world leading talents and thus deals with a very advanced curriculum. Furthermore she has been shown to easily solve problems meant for Kamijou Touma who courses a school rank higher than her, though it should be noted that Kamijou's school doesn't pursue the same academic excellence that Tokiwadai does.
It was showed that Mikoto had intended to take the trial enrollment into Touma's school during the Ichihanaran Festival, which further showed her interest in Touma, though this came to naught as she was interrupted by Shokuhou Misaki.
