Young Shaggy and young Scooby-Doo in the new animated adventure ... Dee Dee and the rest of the Teen Angels found the frozen Captain Caveman and defrosted him from a block of ice.

And the second trailer, released in early March, implied that the film would essentially pave the way for a Hanna Barbara cinematic universe, including Tracy Morgan as Captain Caveman. Scooby-Doo ...

while Morgan will voice star as Captain Caveman, a character who has appeared in other Hanna Barbera cartoons, but not the original "Scooby-Doo". The story sees the Mystery Inc.gang join forces ...

along with Spears, a film that features not only the characters they co-created from Scooby-Doo but also Blue Falcon & Dynomutt but Captain Caveman.