Harumi Kiyama

Harumi Kiyama is the main antagonist of the Level Upper arc, the first major arc in the anime/manga series ''A Certain Scientific Railgun. ''She is the creator of the Level Upper, a sound in which when used allowed the user's abilities to become stronger. Using the Level Upper causes the user to be put in a comatose state, as apparently, all those who are part of the network lose control of it. Also, the one controlling the network (which is revealed to by Kiyama) is also capable of accessing all the abilities of the users who are connected to the network. Eventually, it is revealed that Kiyama did this in order to revive some students who ended up in a coma as the result of a tragic experiment.

She is voiced by Atsuko Tanaka in the Japanese version of the anime and Anastasia Munoz in the English version, the latter of whom also voices Saika Gasai.