Febri

Introduced in the second half of Toaru Kagaku no Railgun S, She is mostly seen eating a lollipop. ~!She is a [Chemicaloid](https://toarumajutsunoindex.fandom.com/wiki/Chemicaloid_Project#Chemicaloid) and eating lollipops keep her from dying!~ (Source Toaru Majutsu no Index Wiki, edited)