Also known as: ミサカ9982号
One of the many "Sisters" - clones of Misaka Mikoto. 9982, as her name implies, was the 9982nd of 20,000. She was also the first one with which the Railgun had contact, and received a Gekota pin as a "present" from her original, a feature that usually distinguishes her from the other identical clones.
As indicated by her number, this Sister was quite brutally murdered by Accelerator (Toaru Majutsu No Index) during the Level 6 Shift Project, right in front of a powerless Mikoto's eyes.