•Ranked third among the seven Level 5 espers in Academy City, she is the strongest Electromaster in the city.
•A second-year student at Tokiwadai Middle School, a prestigious girls' academy, she is known as "The Ace of Tokiwadai" and "The Invincible Railgun." She is competitive, has a strong sense of justice, and possesses a boyish and spirited personality, but lacks patience.
•"Railgun" is Misaka Mikoto's signature move. Utilizing the principles of electromagnetic induction, she fires a coin at three times the speed of sound (1030 m/s). Since she uses her own electromagnetic power to correct the coin's trajectory and accelerate it, her railgun is continuously accelerating until it hits the target, unlike a regular bullet. This grants her railgun exceptional accuracy and destructive power.

•学园都市中仅有的七名超能力者(Level 5)中排名第三位,学园都市最强电击使
•贵族女校常盘台中学二年级学生，有“常盘台的王牌”和“最强无敌的电击公主”之称。性格好胜、正义感强，有着男孩子般的爽朗性格，但是却没有耐心。
•“超电磁炮（Railgun）”是御坂美琴的招牌招式，利用电磁诱导原理，将硬币以初速度3倍音速（速度1030m/s）射出。由于运用自身的电磁力修正飞行轨道和加速硬币，所以与一般的子弹不同，美琴的超电磁炮在命中目标前是不断加速的，因此拥有极高的准确度和破坏力。