Caitlin Snow is a fictional character from the DC Comics universe, primarily known for her role in the television series The Flash. She is a brilliant scientist with expertise in biochemistry and is often portrayed as a member of Team Flash, assisting in their fight against various villains. In the series, Caitlin develops the ability to manipulate ice and cold, adopting the superhero persona of Killer Frost. This duality in her character adds depth, as she struggles with her powers and their impact on her relationships and identity throughout the storyline.