In the Locke & Key comic series one-shot Grindhouse, three gangsters on the lam after pulling a big heist pick the wrong place to hide out - An isolated mansion on the tip of Lovecraft Island, known locally as the Keyhouse. The Grindhouse Key, aka the Bitey Key, opens a door to a darkened passageway, which turns out to be a mouth with very sharp teeth; useful for disposing of unwelcome houseguests.
Full-size licensed replica. Bright nickel-plated pewter, with red and black enamel.
From Skelton Crew Studio.