Mook Pits
An entity of unknown origin had designs to feed in the Mook Pits.
Behind the scenes
The book Monsters and Aliens from George Lucas, which came out in 1993, included a reference to the Mook Pits. Leland Chee, an employee at Lucasfilm who is in charge of the Holocron continuity database, has stated that the book's contents are considered non-canonical.
Sources
- Monsters and Aliens from George Lucas (Initial mention)