YMMV / The X-Files Miniseries E14 "Familiar"

• Complete Monster: "Mister Chuckleteeth" is a sadistic demon who is unleashed by a woman named Anna Strong who wanted revenge on her husband the security chief and thus unleashed a witch's curse that she intended to punish Chief Strong for his adultery. The demon however went rogue and started killing anyone close to the witch, including her children. The demon does this by disguising himself as the popular children's mascot Mister Chuckleteeth, luring a child named Andrew to the forest and then transforming into a hellhound to painfully and slowly maul him alive. "Mister Chuckleteeth" would later kill Anna's daughter, resulting in a sex offender being lynched by the townsfolk for the demon's crimes. "Mister Chuckleteeth" also tricked Chief Strong into killing Andrew's father Officer Eggers, and later mimicked Andrew to drive his mother off the road before killing her. His final confirmed victim would be the Chief himself.