Killer Frost: E-2

On Earth-2 Crystal Snow was born with the genetic disease ALS. Her father, Hank Snow, was a researcher for STAR Labs searching for a cure for her ALS. She developed cryogenic powers and a alternate personality after her father used cryogenic research to freeze the progression of her ALS disease. Crystal Snow became Killer Frost and everything changed. She is a primary antagonist to The Flash of Earth-2.