Deep 13 was a subbasement of Gizmonic Institute and, according to former SOL janitor Joel Robinson, highly radioactive as a result of being close to the Institute's atomic pile. Dr. Clayton Forrester and Dr. Laurence Erhardt began using it for their work in order to avoid detection at Gizmonic. Some time after Dr. Erhardt's departure and the arrival of TV's Frank, the Mads began living in Deep 13 and, eventually, cut all ties to Gizmonic.
There was a neighboring Deep 12 whose tenants once included two "foxy ladies."
In the final Comedy Central episode, Dr. Forrester shut down Deep 13 and moved back in with his mother after his funding was cut.
Behind the scenes
The show never explained from whom Forrester was receiving funding. However, series creator Joel Hodgson (who also played Robinson), when pressed in an interview for the Satellite News, gave a plausible explanation: the Mads were selling the show to basic cable providers (effectively making it a show within a show). This storyline was bolstered by several "host segments" from the KTMA season through season 7 that discussed the internal show's ratings. But as Hodgson cautioned in the interview, such storylines should be taken with a grain of salt, as recommended by the show's theme song: "Just repeat to yourself, 'It's just a show / I should really just relax'".
|Principal||Dr. Clayton Forrester • Dr. Laurence Erhardt • TV's Frank • Pearl Forrester • Professor Bobo • Brain Guy • Kinga Forrester • Max • Mega-Synthia|
|Secondary||Gerry and Sylvia • Dr. Peanut • The Observers • Synthia • Ardy • Skeleton Crew • Dr. Donna St. Phibes • Bonesy|
|Mirror Universe||Mike Nelson • Crow T. Robot • Tom Servo • Gypsy|
|Locations||Gizmonic Institute • Deep 13 • Deep Ape • The Widowmaker • Ancient Rome • Castle Forrester • Moon 13|