Even though the film was entirely produced by Hanna-Barbera, with the exception of "Castle Thunder" being heard a few times, none of Hanna-Barbera's famous sound effects show up in this film. This became more common with the company during the 1990s. See more
Please sir, trick or treat.
So you've tricked me, is that it? What would a treat be then, hmm?
Well, we saw our friend come in here. If you let him go, that would be a treat.