The Nine Inch Snails, a spoof of the band Nine Inch Nails, appeared on episode 206 of Muppets Tonight.
Two of the snails appeared in A Muppets Christmas: Letters to Santa as mail carriers. They were cut out of the aired version, but do appear in the extended DVD version and in the deleted scenes. They were played by Martin P. Robinson and Tyler Bunch. Gonzo calls one of them Kevin.