RPG Menagerie: Gamin

Our horror-thon takes us to Chill, which is what I consider THE generic horror game. But just because it's generic (i.e., not tied to a franchise, nor built around an involved setting), doesn't mean it didn't come up with interesting monsters...

Monster: Gamin
Game/Product: Chill/Things

Writing: Michael Williams. Art: Steve Bissette
Origin: The name comes from the colloquial French word for "child" (male form, the female form having made the news for its relation to a certain trafficking ring). They are (hilariously) minions of a Mean Old Neighbor Lady (now THERE'S a monster) who want to play like normal children, but their favorite game is murder. They can take the form of normal (if malnourished) kids and hide in their numbers, influence them, etc., and collect toys and knick-knacks from their victims.
Fear Level: If you think evil kids in movies are extra creepy, this is the monster for you. Even if you don't, there's always a powerful frisson when PCs have to eliminate something that looks like a child, even a monstrous one. Damns your soul, it does. You roll a Fear check only if you realize it's a monster.
Danger Level: They will usually go after a couple with only one child, or a kindly old lady, but they don't mind infiltrating your party and murdering its members in the night. Come for the unexplained deaths, stay because you're dead yourself! That said, they're not that tough, it's more about the manipulation.
Famous examples: I suppose the closest thing to the Gamin in mainstream folklore is the Changeling, a creature that replaces an actual child and has Fae or demonic origins. The Philippines have a Tiyanak, which presents as a crying infant that turns into a bitey demon when you pick it up and try to comfort it (there's a 1988 Filipino film about that concept).
I wonder if: I could make a list of Adoption Horror films and bring attention to the subgenre.