Mr. Knack (performed by Brian Muehl) is the castle's handyman and tinker. He uses many unconventional methods for fixing things around the castle. Mr. Knack also loves to barter when he sells some of his inventions that he has made from his pushcart. Mr. Knack always gets some postcards which he reads to the viewers. His first name is "Nick", giving him the name Nick Knack.