At the time that principal filming wrapped on "Casper", a sequel was proposed and a treatment was written, but a combination of less-than-stellar box office gross (although the film grossed $100 million in the US, the budget was more than half of that total and analysts predicted much higher earnings for the film) and the fact that both Christina Ricci and Bill Pullman were attached to other projects after "Casper" and would not be available until more than a year later caused the idea to be scrapped. The producers then decided to abandon the live-action sequel ideas and instead developed this cartoon series to continue the story.