In the Welsh Christmas tradition of Mari Lwyd, a skeletal horse accompanied by a team of followers will knock on your door on Christmas Eve, wanting to come inside. If you turn them away, you must do so through song. If you let them inside, you are expected to provide food and drinks. Nobody is quite certain of the origin of this strange tradition.
I would let them in. Sounds like a fuckin party. Never turn away spirits just because of how they look
fair--y backup 