Initially, Laughing Jack was an innocent, sweet creation meant to comfort lonely Isaac. However, Isaac’s actions soon corrupted Jack, who became increasingly disturbed and psychotic. Originally colorful, Jack lost his hues and turned black and white (a monochromatic clown), fully embracing his demonic form. Now, Laughing Jack is a figure of pure evil, remorseless and violent, taking pleasure in killing and torturing those he was once meant to protect (children).