Jack Mercer: Felix, The Professor, Rock Bottom, Poindexter, Professor, Master Cylinder, King Barney, Leprechauns, Narrator, The Master Cylinder, General Clang, Rajah, Cowboys, King Neptune, MacIntosh, Martian, Martin the Martian, Native Americans, Robot, TV Announcer, TV Interviewer, The Genie, Walter, Zookeeper, Abominable Snowman, African Diamond Man, Airport Announcer, Airport Clerk, Announcer, Baldy Heads Incorporated Speaker, Bird, Blobs, Boss, Bubbles, Cavemen, Cavewoman, Chief Standing Bull, Circus Owner, Cowboy, Delivery Man, Dinah, Doctor, Eagle, Elevator Announcer, Eskimo Girl, Eskimos, Father Time, Ghost, Ghosts, Giant, Gold Prospector, Guard, Headquarters Man, Kangaroo, King Blob, Laundry Delivery Man, Little Martian, Mars, Miracle Chair Salesman, Moths, Movie Director, Mrs. Woodpecker, Museum Guard, Native American Chief, Natives, Newspaper Man, Old Men, Pebble Bottom, Pet Shop Salesman, Pierre Mustache, Police Chief, Police Officer, Police Officers, Police Sergeant, Policeman, Radio Announcer, Radio Announcers, Railroad President, Ravens, Redbeard's Ghost, Robots, Shoeshine Boy, Sir Rock, Space Station Announcer, Spacegram Delivery Man, Stone Carver, Store Owners, Supertoys, TV News Reporter, The Professor's Invention, The Rajah, The Wizard, Townspeople, Toy Store Clerk, Train Conductor, Vavoom