Killer Frost, also known as Dr. Caitlin Snow, has had different interpretations over the years. Initially depicted as a supervillain with a cold and ruthless demeanor, she possesses ice-based powers and an insatiable need for heat to sustain herself. In some iterations, she struggles with her dual nature and desires to find a balance between her darker urges and her human side. Later versions of Killer Frost show more complexity, villainous traits and moments of empathy and redemption.