Lego Scooby-Doo: Haunted Hollywood is the first Scooby movie to be done entirely in Lego style animation, starting the Scooby-Doo Direct-to-Video Lego Film Series. The movie involves the gang winning the chance to check out Brickton Studios, an old Hollywood movie studio. It's there that they encounter three ghosts (a mummy, a zombie, and a Headless Horseman) that threaten to shut down the studio. Now the gang has to investigate and make a movie in order to save the studio.
The movie contains examples of:
- Adam Westing: The Elvira-like Drella Diabolique is voiced by Elvira herself.
- Alternate Continuity: This film being set in its own canon seems to be the case. The minor villain at the beginning is Verona Dempsey, the gang lives in Crystal Covenote , and Daphne's personality is similar to her Be Cool, Scooby-Doo! incarnation.
- Art Shift: The first movie to be done in Lego style animation.
- Continuity Nod: The gang find a movie set of Grimsley Manor and Velma remarks that they know there aren't any zombies there because they've been to Grimsley Manor on one of their previous cases. This is a callback to the TV special Lego Scooby-Doo! Knight Time Terror.
- Denser and Wackier: Considering the animation, it's no surprise that this is one of the sillier installments of the franchise.
- Malt Shop: Walt's Malts
- Shout-Out: Shaggy and Scooby's goofing off montage has the former try on a Batman costume.
- Would You Do It For A Scooby Snack?: Shaggy and Scooby's arc in this movie is about not eating Scooby snacks in order to avoid being bait. Naturally, they go back to doing so in the end.