your 4-9 years old and your older sibling told you about the myth of Laughing Jack, a rainbow joyful clown that turned evil after being trapped in a music box for 13 years and is now all black and white with long arms to kill kids

Hes associated with other murderers like Slenderman, Jeff the killer, Eyeless Jack, Ticci Toby, Ben Drowned etc

You suddenly you hear a noise from the closet you open it and you see Laughing Jack

He probably sent by Slenderman and his proxies to kill