- It's the witch's ghost
She's what we fear the most
It's the witch's ghost
If she catches us we're toast
We got a problem...
- Ambiguously Brown: Luna is dark-skinned and has dyed red hair, but it's unclear if she's black or a non-white Latino. If Luna is her real name, however, the latter could be true.
- Artistic License – Religion: Everything said about Wicca is blatantly wrongnote , but at least the writers don't equate it with Wicked Witch. They equated it with "good witch".
- Furthermore, Wicca is a religious faith that anyone can practice if they choose, meaning that there is no such thing as Wiccan ancestry. (In other words, Thorn being "1/16th Wiccan" is just as silly as someone claiming to be 1/16th Catholic.)
- Lastly, Wicca did not exist prior to the 20th Century. It was established in its current form in the 1950s by Gerald Gardner. Though Wicca is sometimes stated to be a survival of repressed medieval paganism, there is much doubt to these claims.
- Attack of the 50-Foot Whatever: Giant. Turkey.
- Big Eater: Scooby and Shaggy, proving this once again in one of their more notable eating adventures. They apparently eat so much that Jack has to run to the market to stock up on food to cook, and leave him with enormous stomachs and a massive pile of dishes. It's a wonder Scooby could walk with such a Balloon Belly.
- Blonde, Brunette, Redhead: The Hex Girls.
- Broken Pedestal: Velma looked up to Ben Ravencroft, he was her favorite writer. And then he reveals his true colors.
- Canon Immigrant: This was the introduction of the Hex Girls, who would return in Scooby-Doo! and the Legend of the Vampire and would go on to appear in What's New, Scooby-Doo? and Scooby-Doo! Mystery Incorporated.
- The Chessmaster: Ben Ravencroft orchestrated the entire events that lead the gang to Oakhaven, including being behind the Museum mystery at the start of the movie that would lead to Velma meeting him.
- Continuity Nod: Ben is seen reading about the gang's exploits in a newspaper detailing the "Moat Monster Mystery" the gang solved in the previous movie.
- Darker and Edgier: As compared to the original Scooby-Doo cartoon series, although its predecessor is still considered slightly darker. What sets these two movies apart is the fact that they feature real monsters (i.e. zombies, ghosts) as opposed to petty criminals in masks.
- Dark Is Not Evil: The Hex Girls. They may look scary and have an obsession with vampire lore, but they're really nice on the inside.
- Department of Redundancy Department: Subtly so, but the title and chorus of "Earth, Wind, Fire, and Air" mentions the same element twice (Wind and Air being the same thing in terms of the classical elements). Presumably, "Earth, Wind, Fire, And Water" wouldn't have the same ring to it and would mess up the lyrical scheme.
- Evil All Along: Ben Ravencroft, who kept convincing others that his great-grandmother Sarah was just a misunderstood woman who was unfairly executed, but she actually was an evil witch all along, and he intends to use her to become a warlock.
- Evil Laugh: The Witch's Ghost has one clearly inspired by The Wizard of Oz. The real Witch's Ghost has a much more impressive one.
- Expy: Ben Ravencroft is a dead ringer for David Xanatos. And he bears more than a passing resemblance to real life New England horror novelist Stephen King.
- Fake-Out Make-Out: Though they don't actually kiss, Scooby and Shaggy pretend to invoke this dressed as a young couple to fool the Mayor. It works.
- Goth Girls Know Magic: Subverted: The Hex Girls "ritual" turns out to be for show and the "potion" they were seen making was just an herbal treatment for their vocal cords.
- Ham-to-Ham Combat: Ben and Sarah's argument is essentially Tim Curry and Tress MacNeille trying to out-ham each other. It is awesome.
- Mook DLE: This studio did the animation.
- I'm Melting: Shaggy and Scooby try to melt the Witch's Ghost using water. But as it turns out, it doesn't work.Sarah: (unimpressed) What was that?:Shaggy: Like, it worked in the The Wizard of Oz!
- Knight of Cerebus: As with the villains featured in the film before this one, Ben and Sarah Ravencroft are very much dangerous threats that should be taken seriously.
- Lighter and Softer: As compared to Zombie Island, but not by much. The Witch's Ghost is still exceptionally dark by by the standards of Scooby-Doo.
- Ninja Zombie Pirate Robot: The eponymous villain seems like an intended example of this.
- Not Evil, Just Misunderstood: Ben Ravencroft and Mystery Inc. attempt to clear Sarah's name because they believe she was this. As it turns out she was indeed very evil, something Ravencroft was aware of from the beginning.
- Only Known by Their Nickname: The Hex Girls. Dusk, Luna and Thorn are Stage Names. Later, when her dad gets unmasked, it's subverted in the case of Thorn; her real name turns out to be Sally McKnight.
- Screw This, I'm Outta Here!: Dusk and Luna.
- Scooby-Doo Hoax: The whole town pulls one to boost tourism.
- Shout-Out: At one point, Shaggy tries to splash a pail of water on the ghost of Sarah Ravencroft...to no avail.
- Spell Book: What the diary, which Ben Ravencroft is seeking, is.
- Taking You with Me: Not wanting to be sealed back in the book alone, Sarah Ravencroft decides to take her grandson inside the book with her.
- The Extremist Was Right: The Puritans that ruled the early Commonwealth of Massachusetts were Church Militant theocrats who judicially murdered dozens of people because of wild accusations of witchcraft. One of those they executed was Sarah Ravencroft, who WAS a Very Real, Very Evil witch and threat to the rest of the world. Unfortunate Implications Ahoy?
- Vile Villain, Saccharine Show: Ben and Sarah Ravencroft, however, Sarah is a definite force not to be reckon with.
- Wicked Witch: Double subverted with Sarah Ravencroft, as Ben Ravencroft explains in one of his biggest lies.
- Witch Species: In this movie, magic is hereditary. And both Ben Ravencroft and Thornnote have the right ancestry.
- Ye Olde Butcherede Englishe: The real Witch's ghost speaks it. Oddly, her spellbook averts the trope, as it's written in proper modern English.
- You Keep Using That Word: Wicca is a religion, not a synonym for Good Witchcraft.