The Headless Chef is a parody of the "Headless Horseman", and also the slasher version of a member of the BTD group, zacaris.
The Headless Chef has a jack-o-lantern for a head, wears chief attire soaked with blood stains, wields a frying pan as a weapon and a head attached to his pants as a lantern (most likely his head or the head of a victim). The only sound that the Headless Chef makes is a scream or "moan."
The Headless Chef's ability is to bind a player in a spit-roast. He is distinguished by the pang of its frying pan when it attacks.