Averted in episode 17. Instead of a human in a fake ghost costume, the antagonist was the deranged surviving member of a lost family.
The gang stages their own hoax in episode 39 in order to steal the other three pieces of the Planispheric Disc from the old Mystery Incorporated.
Other aversions: Episode 43 has the gang sussing out right away that Professor Pericles is behind the mutant cattle. Episode 50 is a straight adventure drama with a touch of humor.
Screwed by the Network: Despite universal praise the series was screwed in Season 2 where there would often be months between new episodes and no news of when new episodes would come out. It was easier to find the episodes online rather than TV. Luckily however, they managed to wrap up the series at the end instead of outright canceling it like many other shows that have been screwed.
Sdrawkcab Alias: In "The Secret of the Ghost Rig", Rung Ladderton uses the alias 'G. Nur Notreddal' to hide some of the purchases he made to create his identity as the Ghost Trucker.
Sdrawkcab Name: All of the "Wild Brood" bikers in have these, from smooth-acting leader Odnarb, to Foog and Dren, to the disgusting Gabtraf. Justified because they are role-playing nerds who chose these names on purpose.
Sealed Evil in a Can: The Nibiru entity, who is sealed inside the crystal coffin of the Conquistador's Treasure and is heard laughing from inside it at the end of episode 39.
Self-Inflicted Hell: The nightmare realm to El Aguirre and his men (or at least their good sides), they believe to deserve it so much that they try to stop people who want to destroy the Nibiru entity because that would set them free.
Shadow Archetype: Hot Dog Water is what Velma would be like if she didn't have any friends to help her.
Shadow Discretion Shot: Spoofed. Fred assures Scooby they wouldn't leave him behind at the Mystery Solvers State Finals, but then excuses himself to go sob and wail — but we hear him and see his shadow angsting.
Daphne: (winks to Scooby) They actually put it off till next week so you could get better...but we haven't told Fred yet.
Shadow of Impending Doom: In episode 4 the shadow the kids mistake as the Man Crab turns out to be an actual little crab. Painful none-the-less - it pinches Scooby's nose.
Ship Tease: Velma/Shaggy; Velma/Hot Dog Water in an alternate opening, where she clutches a photo of Velma to her chest just like Daphne normally does of Fred.
And it's proving to be a potential sign of what could happen later. In episode 41, we find out that a group of mystery solvers 500 years ago had a pet donkey who detonated the settlement of Crystal Cove into the sea and tried to take off with a piece of the Planispheric Disc before he was attacked by an alligator. The mummy of Friar Gabriella Serra (and he's a real spook this time) warns the gang "this has all happened before" and presages that Scooby, being the animal of the team, will die as warned by the alligator.
Stalker with a Crush and Stalker Shrine: Velma's got one in her old lab partner, Jason. The tubby little dork's bedroom walls are a virtual to her. It's somewhat subverted in the end of episode 10 when Velma confesses she has someone she likes and that the two be 'friends'.
Fred turned into one in the second season towards Daphne, even giving his Teddy Bear Daphne-like hair.
Also, Lady Marmalade the barista's "mocha-choca-lattas."
Stealth Prequel: The series finale reveals that the series was actually a prequel to the Scooby Doo mythos as a whole. The show ends with the gang in an alternate reality, setting forth to go to college, stopping to solve mysteries along the way.
Steampunk: The Benevolent Lodge of Mystery has a definite Steampunk look to it. The Fred and Velma counterparts both wear goggles, and the Shaggy counterpart has a thick brass monocle and a similar device in his top hat.
Stout Strength: Shaggy and Scooby temporarily acquire this attribute after they consume all of the starchy food in Crystal Cave. While too fat to fit into the Mystery machine, they have enough strength to go one-on-one with the Gluten Demon.
Stunned Silence: When the original Mystery Incorporated think they've gotten their hands on the Planispheric Disc, they instead find a tape with a message from the Scooby Gang. It's revealed that the entire plot was orchestrated by the gang so that they would be distracted, allowing them to steal their pieces instead. When the tape finishes, all they can do is stare at the screen in shock.
Stuff Blowing Up: An alarmingly high rate too, compared to the older shows; there have been cars, trains, houses, helicopters exploding, even the Mystery Machinebut it turned out the blowing up van was a decoy to upset Fred and the gang.
Propane tanks seem to only exist to be blown up as well.
Fred actually blows up the tricked-out Mystery Machine in episode 50 when Pericles' Kriegstauffenbots surround and attack it.
Stylish Protection Gear: In "The Midnight Zone", Mystery, Inc. don scuba gear that closely matches their usual outfits, even done to the neckwear with Velma's suit having a turtleneck and Fred's an ascot.
Super Cell Reception: Subverted. The gang has cell phones that work when they are stranded in Gatorsburg, but they reach indifferent parents who are unwilling to help.
Super OCD: Fred makes a multi-page schedule for Daphne so he'll know where she is every minute of the day. Like Monk, he got it because of the loss of a loved one, in Fred's case his abandonment by his mother.
Tailor-Made Prison: Professor Pericles is kept in a special isolated cell (visually based on Magneto's cell from the X-Men movies) in the maximum security animal asylum.
Tainted Veins: These show on on the Gnome's victims in Episode 8.
The Tape Knew You Would Say That: Parodied in episode 17, where Danny Darrow says that his tape is pre-recorded as they can't trick him, but then they point out he did indeed answer them and he just the charade.
Team Rocket Wins: Episode 27: Crybaby Clown gets away, leaving Crystal Cove in virtual ruins and Scooby, Shaggy, Fred and Velma completely defeated.
The perp of Episode 33, Count Evallo, gets off on a technicality—he had diplomatic immunity.
Professor Pericles appears to have obtained the Planispheric Disc in episode 47.
Tears of Joy: In episode 50. Daphne, when Fred tells her he loves her (and the subsequent kiss); and Velma, when she witnesses the act.
Those Two Guys: Ethan (thin red-haired guy) and Gary (large brown-haired guy), team-mates of Fred that keep showing up together.
They are voiced by Mitch Watson (producer and writer) and Tony Cervone (supervising producer) respectively, making these Creator Cameos.
Those Wacky Nazis: Flau Gluck builds an army of Nazi Robots to aid her in her search for the disc pieces. Given her design choice, she must have had some affiliation with the Nazi Party. What verifies this as opposed to, using Nazi imagery to scare others away is the time period; sometime during the 1940's. The presence of Nazi Robots off the Coast of America would have assuredly triggered a response by the Navy, which would defeat the purpose.
Title Drop: The gang eventually finds out that the kids who vanished from Crystal Cove long ago were a mystery-solving crew much like them, who called themselves "Mystery Incorporated." Fred likes the name and the group adopts it. When the Scooby show was first developed in 1969, this was their unofficial - and unused - team name.
Toilet Humor: Episode 11 has this all over the place, with mentions of Daphne's mom getting "the squeakers", talk of throwing "poo" on plants, and French "oui-oui" jokes, the first two of which show up in the first ten minutes.
Episode 19 has Vincent Van Ghoul saying he's so scared of facing Nightfright that he has to tinkle.
Scooby: I think I already did. (Shaggy and Van Ghoul distance themselves from Scooby slightly)
Shaggy: A couple of late night jalape˝o stuffed clam poppers and it's another all-nighter on the porcelain—
Too Dumb to Live: "Those are radioactive symbols, meaning whatever's inside is dangerous. Meaning we need to open it right away. Don't want whatever's in there to mess up our schedule."
Episode 20: A fisherman and his crewman find their net empty, so the captain plans a venture to Dead Man's Point.
Crewman: But isn't that haunted?
Captain: Aye, 'tis what they say. And we may not even make it back alive. But don't forget, we're fishermen. We do stupid things all the time!
The entire gang for not ever realizing the hole in Alice May's story about being a little girl when her "father" the Creeper was caught by those meddling kids...who are still meddling kids in the present day where Alice May is a teenager.
Took a Level in Badass: Scooby Doo is a lot braver and more proactive here than in other incarnations. Particularly in the season 1 finale and the season 2 premiere.
Also the monsters in this series are more threatening and do more damage than in previous shows, causing lots of collateral damage and being willing to murder people who get in their way. And that's not even getting to the main villains.
Shaggy in episode 40. He will kick your ass if you mess with Scooby-Doo. The others put up a good fight with Zin's goons as well.
Shaggy and Scooby in episode 45. Incredibly obese from an eating binge, they take it upon themselves to fight the gluten monster.
Scooby-Doo in episode 50 when the robots threaten Shaggy.
Hot Dog Water in Episode 51.
Took a Level in Jerkass: Velma and Scooby both due to the "love triangle" between them and Shaggy. Shaggy seems to inadvertently bring out the worst in both of them.
This is the effect the curse of Crystal Cove caused by the Nibiru Entity has on everyone.
Torture Mansion: The ruins of the Darrow Mansion in Episode 17 is this, complete with ominous music.
Town with a Dark Secret: Crystal Cove has a long and storied history of mysterious happenings, as well as an alleged curse. And if "Mister E" is to be believed, the gang have just invoked the curse again. Regardless, it becomes clear by the end of the pilot episode that something is very wrong with Crystal Cove.
True Companions: Fred already thinks of the gang as this, stating in episode 8 that the relationship of the group as a whole is more important than the individual romances within and that they're going to be together their "whole lives".
This is important in the series finale, where the true heart of the jaguar that they used to destroy the evil entity was their friendship.
Turn In Your Badge: In Episode 24, Mayor Jones fires Stone in favor of a vigilante in a rubber mask. He gets it back thanks to the gang.
Unwitting Pawn: Scooby, Angel and the gang in Episode 16; Mister E's legman arrives at the end of the episode to tell them they've not only been played, they may well have unleashed the very destruction they were supposed to prevent.
Velma in episode 21. Angel plants an eavesdropping bug in her sweater collar so Mr. E can find out who has the disc piece.
The final episodes reveal that Mystery, Inc. as a whole were pawns being manipulated by the Evil Entity, right down to their formation, much like the former mystery solving groups before them. The Evil Entity even boasts that it created them, and calls them the "Children of Nibiru."
Upper-Class Twit: Daphne's and Shaggy's parents both have shades of this, Daphne's more so than Shaggy's given their vapidness and implied history of hospitalization and psychotherapy.
Vandalism Backfire: In "Heart of Evil", Dr. Zin captures the Blue Falcon and Scooby-Doo. Having established that the Falcon would do anything to save his dog, Zin proceeds to subject Scooby to the agonizer ray. This fails to convince the Falcon to talk and Zin asks him why. The Falcon replies "That's not my dog".
Vicious Cycle: Ever since the Artifact of Doom was left behind in Crystal Cove, it has manipulated groups of intrepid mystery solvers throughout the town's history in a bid to free itself. And in each case, the animal companion always betrayed the others.
That's because the search for the treasure had corrupted the human members, so the animal mascot took it upon itself to destroy the disc. It was trying to stop the curse.
Except, notably, Professor Pericles, who willingly manipulated everyone to try to free Nibru so he could try to gain its power. He wasn't smart enough to realize that trying to mess with a Cosmic Horror always ends badly and winds up the first to be absorbed in the series finale.
The Virus: In Episode 16, a woman with a huge grudge against the town tried destroying it by making the locals mad with love.
The Nibiru Entity blows them out of the water. In addition to being responsible for them, he eats the entire town. This isn't 'Disney Death by a guy in a mask', this is an Eldritch Abomination eating people onscreen. It makes one wonder what happened to the censors.
Vocal Dissonance: Technical issue: the credits of episode 38 have Jeff Bennett as the voice of Mr. E. It's not readily clear if this was a typo or Lewis Black has been replaced—it still sounds the same.
Must have been a typo. Episode 39 has Mr. E voiced by Black.
The War Has Just Begun: The last line in episode 26: "I'll get the gang back together, Pericles. We'll be coming for you, or my name isn't Scooby-Dooby-Doo!"
Scooby issues as similar threat to Pericles at the end of episode 50: "Professor Pericles will regret the day he ever messed with Scooby...Dooby Doo!"
Was It All a Lie?: In Episode 18, Shaggy asks Mai Le this after she'd been caught with the ruby she'd come to Crystal Cove to steal; the answer "Yes, you fool!" devastated him.
Fred to Angel in episode 25.
Fred about his whole life in episode 26.
And Sheriff Stone to Mayor Jones about being the Freak of Crystal Cove.
The Gang question whether or not their own friendship is this, after the reveal that the Nibiru Entity manipulated them all along to form a group.
Weaponized Car: The Mystery Machine is rebuilt as an armoured battle van after it is destroyed towards the end of season two.
"Well Done, Son" Guy: Nearly everyone in the Gang suffers from this to some degree. Shaggy's parents are embarrassed by him and Scooby as a couple of Big Eater slackers, Daphne's parents wish she was more like her successful prodigy sisters and completely disapprove of her not being a Spoiled Brat and her relationship with Fred, and Fred's got an entire truckload of issues with his fake AND real parents. Only Velma has got a stable relationship with her parents, mostly her mom.
As the result of the World-Healing Wave unleashed by destroying the Nibiru entity, this has changed entirely. Fred's birth parents Brad and Judy are no longer self-serving dimwit psychopaths and are implied to have raised Fred with lots of healthy love and attention, and even Fred Jones Sr., who is now the principal and head coach at Crystal Cove High, considers Fred to be like the son he always wanted. Daphne's parents are completely supportive and proud of her and now wish she her so-called "underachieving" sisters were more like her, to the point that they're helping plan Daphne and Fred's wedding because they think he's a great guy. And Shaggy's parents are bursting with pride over what an accomplished, award-winning chef Shaggy is, to the point that they have a hard time imagining him to be a slacker.
Wham Episode: Episode 13 reveals that the guy who has been helping Mr. E is the head of a company that puts landfill in their snack products. This can be verified through the voice credits here.
Episode 21. Confirms the reveal above, confirms the identity of Cassidy Williams and shows that she is spying on the gang for Mr. E, shows Mayor Jones is after something, and reveals the face and identity of Mr. E.
Episode 23. We finally get some information about Fred's Missing Mom. Mayor Jones turns out to have been hoarding a piece of the disc which he stole from Professor Pericles. The Monster of the Week turns out to BE Professor Pericles who has hijacked Fred's traps to use against him and his father. The gang FAILS to catch him since he pulls a booby trap on them shortly after the unmasking and makes off with the disk. Phew...
Episode 26. Mayor Jones was the Freak that drove off the original Mystery Incorporated, and made them leave town afterwards; he also convinced Pericles to betray the original Mystery Incorporated. Freddie is actually the son of Brad and Judy. And the whole gang is broken up as Pericles gets away with both known pieces of the Disk.
Episode 30 has Fred's real parents—Brad Chiles and Judy Reeves—show up at the end. Then in episode 31, they're nowhere to be found after the Hodag dognaps their pet Nova, only for them to show up at the end with Cassidy and Mr. E (Ricky). They've all been assembled for a discussion on the disc pieces by Professor Pericles.
In episode 37, Cassidy dies.
Episode 39 has the gang working to solve a typical mystery... only at the end, it's revealed THEY set it up in the first place to distract the original Mystery Incorporated, with the help of four former villains (including Scooby-Doo, Where Are You!'s Charlie the robot. Their real intention was to get the last three pieces of the Planispheric Disk from the original Mystery Incorporated, assembling the full disk at last.
And then in Episode 41, the gang discovers that there was yet another foursome of mystery solvers with an animal companion back during the earliest days of Crystal Cove, and like the first Mystery Incorporated, the animal companion betrayed them. I really wouldn't want to be Scooby at this point.
Episode 46: The nature of the Nibiru monster is revealed as an evil interdimentional being.
Episode 47: Pericles steals the Planespheric Disk.
Episode 48: Mystery Inc. has been manipulated all this time by the entity, who plans on using them to release him. Shaken by all this, they resolve to get a spear that will destroy the entity for good.
Episode 50: Pericles kidnapped the populace of Crystal Cove to dig for the gate to the entity. The gang springs them in an uprising, but Pericles opens the gate, and the gang resolve to stop him first with all the remaining keys and treasures they have left.
Episode 52/the Series Finale: ALL OF IT! To say anything about it would give you a Mind Screw about it being on a scooby doo show.
What Are You in For?: "Wrath of the Krampus" has the gang trying to get help from one of the people they've put away. Shaggy and Scooby, in their usual fashion, slink away to the cafeteria. One inmate asks them what they're in for, and Shaggy responds "The food!"
What Happened to the Mouse?: In episode 13 the gang visits a victim in the hospital and asks for information on the Cicada monster. They end up giving the poor guy a heart attack, his monitor flatlines, and they sneak off as the nurses are rushing in the crash cart. His fate is never revealed.
Episode 21: We never know what happened to Brenda and Dylan after the Manticore attacked them in the cold opening.
Brenda and Dylan show up in episode 35 and discuss their hospitalization and therapy.
Episode 26: We don't know what became of Ed Machine after Professor Pericles visits him. We just see lights flashing and hear Ed in what sounds like agony.
Tony Cervone clarified on Twitter that Pericles killed Ed Machine.
Episode 52: After the alternate timeline was created, we see Marcy and Cassidy alive again. But we never see Ed Machine.
Where Does He Get All Those Wonderful Toys?: Being thoroughly convincing up until the inevitable unmasking, the monsters are (almost) always asked where they get their get the resources to be monsters in all but physical constitution. The explanations are usually utterly ludicrous.
Episode 32: Cassidy pleads with Brad and Judy to place Fred's interests first; that the search for the treasure has destroyed everything the team originally stood for. They turn a deaf ear so Cassidy leaves them.
Who Is Driving?: In episode 27, Scooby barrels a tank into the barracks at the military school where Shaggy is attending so he can break him out.
Shaggy operates Blue Falcon's Falconcar in episode 40.
Working with the Ex: There's some tension in the team after Shaggy breaks up with Velma in Season 1. In Season 2, Daphne returns to the team, but emphatically wants to remain Just Friends with Fred. It is also revealed that Cassidy/Angel Dynamite used to be the object of affection of Ricky/Mr. E.
In episode 37, just before sacrificing herself, Cassidy is asked by Daphne about her relationship with Ricky. She tells Daphne that ended a long time back and in Fred's case, she urges Daphne to not make the same mistake.
There's something about Velma, being Cassidy's counterpart, that Mr. E seems to fancy. In episode 33, he wants her to join his side again. She refuses.
Episode 3: Rung Ladderton: If it weren't for you meddling... peers.
Episode 6: Alice May: If it weren't for you meddling.... schoolmates .... of mine.
Maxwell the copy boy uses it straight in episode 15 but the gang say it doesn't apply; that's because a group of video game designers who dress up as Noble Demon Orks on motorcycles are the people who actually captured him.
* Or possibly because his plan was so loony it wouldn't have had the desired effect even if they hadn't stopped him.
In Episode 18, Fred interrupts the speech while Scooby agrees that it's been run into the ground.
Episode 19 has the bad guy thank the meddling kids because after he gets out of jail, he'll be able to collect the rights for the movie based on his time as a jackass in a rubber mask messing with people.
Episode 20 has the perps saying if it wasn't for the mermaid that tipped Velma off about the mystery earlier.
Episode 21 has the perp gets a card from a fortunetelling machine which reads, "Meddling kids and a dog will foil your plan" which satisfies Fred, who felt there was something missing when it wasn't said by the perp out loud.
Episode 22 has the culprit calling the gang "those meddling sycophants."
Episode 23: Averted as the culprit was Professor Pericles, who took off with the disc piece Fred's dad had—and apparently took from Pericles years ago.
* When they trap him, he mutters something in German that ends in "kinder" (meaning "kids").
Episode 24: Fred tells his dad that perp "wouldn't have gotten away with it if it weren't for us meddling kids."
Episode 25: Alice May calls Angel a "meddling sassy pants."
Episode 26: Mayor Jones calls Fred "my meddling... Fred," tying into the revelation that he's not actually Freddy's birth father.
Episode 28: Curator Vronski would have gotten away with it "if it wasn't for you decadent bourgeois teenagers and your slobbering democracy-loving dog!"
Episodes 17 and 34 avert this. The antagonist in episode 17 was swallowed by an earthquake, while in episode 34, Hot Dog Water—unmasked by Velma as the perp—simply hands Velma the disc piece and leaves. The rest of the gang was still covered in debris from the galleon wreckage.
Professor Pericles delivers the line straight in episode 37, attributing those "meddling kids" to his failure to eliminate Cassidy.
Episode 48: Professor Kharon's trapped spirit is reunited with himself "thanks to you meddling kids! You beautiful, brave meddling kids!"
AMC cell phone reminder: The entire audience says, "Keep it down, you meddling kids!"
You Monster!: Mr. E says this to Pericles after he orders the death of everyone in Crystal Cove.
You Shall Not Pass: In "The Midnight Zone", Cassidy stays behind in the undersea base to keep the doors open long enough for the Moby Dick to escape and hold off the killer robots.
You Will Know What to Do: Said by the possessed Nova to Scooby-Doo when she freezes time in the series finale to tell Scooby that the heart of the jaguar was never the spear, and that he'll know what to do when the time comes.