Karen is the deuteragonist of Frosty the Snowman, and the 2024 crossover special Rudolph and Frosty the Snowman. She is a little blonde, ponytailed girl who befriends Frosty. In fact, she accompanies him.
She was voiced by the late June Foray in the original airing, and by Suzanne Davidson in all subsequent airings and the 2024 crossover special Rudolph and Frosty the Snowman.