Scooby-Doo is back in 'Scoob!' but so are other Hanna-Barbera favorites. Screenwriter Matt Lieberman reveals there were originally even more.

“Yes. Oh my god,” Wen replied when we told her we’d still love to see Holiday Haunt. “Never say never. I don’t know what happened, why it happened. I stay out of the politics of everything. I think ...