Killer Frost is a fictional character from the DC Comics universe, primarily associated with the Flash series. She is known for her ability to manipulate ice and cold, often using these powers to freeze her enemies or create ice constructs. Her real name is Caitlin Snow, and she has appeared in various comic books, animated series, and live-action adaptations. In the Arrowverse, a shared universe of television shows, Killer Frost is portrayed by actress Danielle Panabaker. The character has a complex background, often struggling with her dual identity as both a hero and a villain. Her powers and personality have evolved over time, making her a significant figure in the Flash storyline.