Before Treasure Planet was shown in cinemas, Thomas Schumacher, then president of Walt Disney Feature Animation, mentioned the possibilities of having direct-to-video releases for Treasure Planet as well as a television series. He stated that they already had “a story and some storyboards and concepts up and a script for what a sequel to [Treasure Planet] could be,” and that they also had a “notion” of what the series would be.
Director Jun Falkenstein and screenwriter Evan Spiliotopoulos began early development on Treasure Planet 2. In the sequel, Jim Hawkins and Kate, his love interest and classmate at the Royal Interstellar Academy, must team with Long John Silver to stop the villainous Ironbeard from freeing the inmates of Botany Bay Prison Asteroid. Willem Dafoe was set to voice Ironbeard. The sequel was canceled when Treasure Planet disappointed at the box office.