The castle belonged to Pearl Forrester's ancestors, and it was implied that their "spirits" remained connected to the Castle. The Castle was accessible to local peasants. The Castle has hosted some misled cruise passengers (Experiment #911) and the pancake breakfast for the Delta Knights (Experiment #913).
In Horrors of Spider Island (Experiment #1011), Pearl became annoyed with a local ordinance requiring her to pay for a monkey license, so she had the Castle moved to a less costly municipality (at great expense). At the end of the episode, she had it moved back.
It is unknown where on Earth Castle Forrester is located, or what has become of it since its inhabitants left.
|Principal||Dr. Clayton Forrester • Dr. Laurence Erhardt • TV's Frank • Pearl Forrester • Professor Bobo • Brain Guy • Kinga Forrester • Max|
|Secondary||Gerry and Sylvia • Dr. Peanut • The Observers • Synthia • Ardy • Skeleton Crew|
|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|