played by Billy Van, except where specified. The Wolfman – A werewolf disk jockey at radio station EECH who spun rock and roll records while doing a Wolfman Jack impression. The Wolfman's theme song was Sly and the Family Stone's "I Want to Take You Higher". The segment featured then-current hit singles by The Rolling Stones, Sly and the Family Stone, Three Dog Night or other Top 40 radio stars of the time (which were referred to as ‘golden oldies’ in order to avoid dating the program), with the Wolfman and Igor dancing in silhouette against a psychedelic background. Due to licensing reasons, the musical numbers are no longer shown on some reruns, although broadcasts on YTV in the early 2000s included the segments. The Grammar Slammer – The Grammar Slammer was a disembodied voice (Van) who challenged Igor to correct grammatical errors, accompanied by an eight-foot purple monster named Bammer (worn and voiced by Joe Torbay) who threatened to beat up Igor if he failed. The Professor (Julius Sumner Miller) – A professor who provided science lessons on such things as thermal expansion and the cartesian diver. Bwana Clyde Batty – A British explorer who teaches about wild animals on Zany Zoo. His name is a spoof of animal trainer Clyde Beatty. His catchphrase is "ooga booga!" Dr. Pet Vet – A veterinarian who teaches about domestic animals (whereas Zany Zoo was about wild fauna). He always offers the day's animal to Igor as a pet, but the Sloth in the basement invariably refuses to allow Igor to keep the animal. Grizelda, the Ghastly Gourmet – A witch voiced as a parody of Julia Child, who provides a version of a television cooking show as she cooks suitably ghastly recipes in her cauldron. In every one of her segments, she bangs her head on the pot above her cauldron, and invariably declares the recipe a failure after it causes a small explosion. The Librarian – An elderly curmudgeon who unsuccessfully tries to scare the viewers by reading children's stories, such as "Humpty Dumpty" and "Henny Penny", which he thinks are horror stories. He also sometimes reads fables with unpleasant endings. He eventually admits to not being any more frightened than the viewers, but considers reading important nonetheless. The Maharishi – A Hindu guru who shares bits of mystically inscrutable wisdom (e.g. "It is written, that he who kicks the