Duke (individual)
Duke's gender was male. There was a creature with intentions to grapple with Duke, with the ultimate goal of consuming him.
Behind the scenes
The book Monsters and Aliens from George Lucas, which came out in 1993, included a reference to Duke. Leland Chee, an employee of Lucasfilm and the keeper of the Holocron continuity database, has stated that the information within that book is considered non-canonical.
Sources
- Monsters and Aliens from George Lucas (Initial mention)