oh, where has my Underdog gone? Oh, where, oh, where can he be?" She would sing this to the music of the song "Oh Where Has My Little Dog Gone" whenever in jeopardy. Recurring villains included: Simon Bar Sinister, voiced by Allen Swift, is a mad scientist with a voice reminiscent of Lionel Barrymore. He is the wickedest man in the world and has an assistant named Cad Lackey. A bar sinister is a diagonal line, running from top right to bottom left on medieval family coats of arms, a symbol that indicates the person is a bastard by birth; this was an inside joke typical of animation writing at the time. Riff Raff, also voiced by Allen Swift, is an anthropomorphic wolf gangster based on noted actor George Raft. His right-hand man is Mooch, while other gang members (seen in one episode each) include Sandy the Safecracker, Spinny Wheels (who drives the gang's getaway car), Dinah Mite (the underworld's greatest bomb tosser), Nails the Carpenter, Needles the Tailor, Smitty the Blacksmith, and the Witch Doctor. Other villains included The Electric Eel (a.k.a. Slippery Eel), Battyman, Tap Tap the Chisler (an evil look-alike of Underdog who does not speak in rhyme), and Overcat. Underdog also regularly faced enemies from alien worlds, such as the Marbleheads from the planet Granite, the Magnet Men of the Magnet Planet, the aliens from the planet Zot, and the Flying Sorcerers of the Saucer Planet. The majority of the Underdog adventures were presented in the form of four-part serial episodes. Other cartoons, including Go Go Gophers and The Hunter, filled the middle segments. A 1969–1973 NBC run featured all four parts of an Underdog storyline in one half-hour show. The series was first syndicated in the U.S. in the mid-1960s under the title Cartoon Cut-Ups, which presented two Underdog segments along with Tennessee Tuxedo and His Tales and The World of Commander McBragg. This package was revised in the 1970s under the Underdog Show title, now including all 124 Underdog segments and featuring Tennessee Tuxedo, Commander McBragg, Go Go Gophers, and Klondike Kat in various episodes. A syndicated package prepared for distribution outside the United States (which also aired on the Boomerang cable network) usually featured two brief Underdog episodes in a single show along with a wider variety of other Total TV cartoon shorts which appeared between such segments: Go Go Gophers, The King