"There will be no Scooby 3," Lillard said in an interview.
Lillard blamed the film's disappointing box-office performance. Scooby-Doo 2: Monsters Unleashed made more than $80 million at the U.S. box office, but that fell far short of the original Scooby-Doo's $154 million haul. "The second one didn't do as well as it was expected to do, and I completely hold that to Warner Brothers' fault," Lillard said. "I think Warner Brothers made a mistake releasing it at the time they did [March 2004]. I think the movie's much better than the first movie, and I honestly thought it was going to do ridiculously good box office. But we had a bad timeslot. We had 13 movies open up in two weeks after we opened up. I mean, it did well, but it didn't do great, and it needed to do great."