Jack Frost is the titular main protagonist in the 1998 Holiday film of the same name. He is a singer who's on the road most of the time so he can't spend a lot of time with his son Charlie, although they love each other very much. When Jack dies in a car accident, Charlie becomes a very sad young man, until... Jack returns as a snowman! Now they can do all the things they've missed when Jack was human, but what will people think when they see Charlie talking to a snowman and what will happen when the weather gets warmer?
He is played by Michael Keaton (who originally played Batman in the first two Batman films and Ken in Toy Story films and Beetlejuice in the 1988 film of the same name.)