Laughing Jack.

Laughing Jack was once a cheerful and colorful clown who brought happiness to a boy named Isaac, but an accident changed everything, his owner Isaac was sent to a reform school and Laughing Jack was left forgotten in a bedroom for years, until one day Isaac returned but more changed, he ignored Jack's box completely and became a serial killer, Laughing Jack witnessed what Isaac did and one day he left his box by accident and tortured Isaac to death, since he thought it was a very funny game, and so he continued with his victims. Laughing Jack has shoulder-length hair, a pointed cone-shaped nose, sharp teeth and claws, also a long tongue, and is monochromatic.
He hates being alone, loves sweets and killing people.