Little Nicky (2000)

When somebody's mother is an angel and his father is the devil, life can be really confusing. For a sweet boy like Little Nicky, it just got a whole lot worse. His two evil brothers Adrian and Cassius have just escaped from Hell and are wreaking havoc on an unsuspecting earth. His dad is disintegrating and it's up to Nicky to save him and all of a humanity by midnight before one of his brothers becomes the new Satan.