Killer Frost

Crystal Frost, also known as Killer Frost, (voiced by Jennifer Hale) is the identity of a criminally insane supervillainess from DC Comics, who (as her name implies) has control over the cold - she is a mass murderer and very dangerous (even by superviilain standards): as well as appearing in comic books she has been involved in the DC animated universe and video-games such as Justice League Heroes.