
Hidden Depths: The bitter janitor wants to be a dancing star.When an investigation attempt leads to severe property damage, Bitterman expels them. Heroes With Bad Publicity: Thinking the "ghosts" are elaborate pranks, Bitterman blames the gang and suspends them.He's clearly embarrassed by it, but it also means that he's the only one with a driver's license, and legally able to drive the brand new Mystery Machine they just acquired.

Held Back in School: Shaggy reveals that he flunked a couple of grades.After they catch their principal in disguise as Specter and he gets arrested, they're finally allowed back in the school. Though they're innocent, they're suspended and then expelled for it, forcing them to investigate and find the real culprit. Guilty Until Someone Else Is Guilty: The gang are accused of intentionally disrupting the school pep-rally and of vandalizing it during their late-night break-in.The Glomp: Scooby does this to Shaggy after they solve the mystery.Of course, the vice principal ends up throwing trash into Shaggy's bin. Shaggy and Scooby go as walking trashcans. Garbage Hideout: After the gang is expelled from school, they use disguises to continue investigating.Food as Bribe: During the epilogue, Shaggy offered (and named) Scooby Snacks to convince Scooby to join the gang in further mysteries.The Faceless: Shaggy's mother is briefly seen, but only as legs at the top of the basement stairs.Shaggy thought she was suggesting using some invisibility serum. Exact Words: When they were told they mustn't be seen anywhere near Coolsville High, Daphne emphasized on they to suggest disguises.When Scooby tries to find the source of the ghosts, she claims that there is evidence of dogs being able to detect paranormal phenomenon.

