Note: This is a character page for characters featured only in installments of the Scooby-Doo live action film series. If you're looking for members of the gang or recurring characters throughout the franchise, visit the main Scooby-Doo character page. If you're looking for characters from Scooby-Doo! Mystery Incorporated, visit its character sheet.
ALL SPOILERS ARE UNMARKED. You have been warned.
The nephew of Scooby-Doo that lives with a gland disorder.
- Adaptation Personality Change: He was a friendly, if impulsive fellow in the cartoons. Here, he's an arrogant, evil mastermind.
- Adaptational Jerkass: While he could be obnoxious in the cartoons (his first in particular), he was a good-hearted individual who cared about his friends. Here, he's an arrogant, egotistical jerk whose obnoxiousness is taken Up to Eleven, leading to him getting kicked out of the gang. And that's before he's revealed to be a villain.
- Adaptational Villainy: This version of Scrappy is the main villain of the first live-action film, when the original incarnation of the character was heroic and genuinely cared for his uncle and the rest of Mystery, Inc.
- Adaptational Wimp: In the cartoons, he had super strength and was a Pint-Sized Powerhouse, able to punch through solid rock and once survived falling off a rooftop without a scratch and would occasionally be the one to incapacitate the bad guy. Here, (once depowered) he goes down with a single punch.
- Big Bad: He is the main villain of the first live-action film.
- Big "NO!": He yelled this after he heard Shaggy call him a bad puppy.
- Black Sheep: Velma says that every family has one nut. He's that one nut.
- Blatant Lies: He intentionally pissed at Daphne but shrugged it off.
- The Dog Is The Mastermind: Literally.
- Evil Brit: In his Emile Mondavarious disguise.
- Flanderization: His obnoxiousness and over-confidence is exaggerated at the expense of his better qualities.
- The Friend Nobody Likes: When he tried to appoint himself the new leader of the gang in flashback, he said it was either that, or he was not staying. The rest of them unanimously decide to dump him and drive off.
- Hate Sink: He appears in a flashback showing how he was kicked off the team, though he's portrayed as a massively egotistical jerk instead of merely being overconfident. He's also the main villain of the movie, acting out of a desire for vengeance over being kicked off the team.
- Hoist by His Own Petard: In the flashback of him getting booted off the team, he really shouldn't have given the gang kicking him out as the only alternative to making him the group's new leader.
- It's All About Me: In the flashback depicting him shows him as an egotistical jerk, which leads to the rest of Mystery, Inc. kicking him out. Velma even calls him an egomaniac.
- Jerkass: Scrappy is an ego-driven narcissist who wanted revenge on the team, especially Scooby.
- The Man Behind the Man: He's the real villain of the film, with Emile just being a very convincing human robot suit he pilots.
- Master Actor: He pulls off a very convincing gentlemanly human businessman.
- Nice Job Fixing It, Villain!: Despite only needing Scooby for the ritual, he invited the entire gang of Mystery Inc. to the island when the members had already broken up and went their separate ways two years ago, just so that they can witness his moment of triumph. This subsequently results in the previously-hostile Scooby Gang rekindling its relationship, coming together to defeat his plan.
- Older Than They Look: When he appears in a flashback, Velma mentions how he wasn't a puppy anymore despite his appearances thanks to a gland disorder.
- One-Winged Angel: His Scrappy-Rex form has him become a monstrous brute.
- Robotic Reveal: His Emile Mondavarious disguise was a robot operated by Scrappy.
- Sir Not-Appearing-in-This-Trailer: His appearance was kept hidden by the marketing.
- Took a Level in Jerkass: He becomes egotistical on top of his overconfidence, even before he seeks his revenge on the gang.
- Urine Trouble: Once he pissed at Daphne, he was removed from the Mystery Machine.
- Walking Spoiler: His involvement gives away the twist.
- You Meddling Kids: Before he was cut off and sent to jail alongside N'Goo Tuana and Zarkos, he nearly referred to Mystery Inc. as meddling sons of bitches.
Old Man Smithers / The Luna Ghost
The janitor of the Wow-O Toy Factory.
- Advertised Extra: He is shown in promotional material including the film's poster in spite of being quickly defeated and carried away by the authorities in the beginning of the film.
- Canon Immigrant: The Luna Ghost's costume can be seen in the first episode of Scooby-Doo! Mystery Incorporated.
- Celeb Crush: With Pamela Anderson. He apparently committed his crime over her turning him down for a date.
- Dramatic Unmask: Everybody except Velma did not expect Old Man Smithers to be the Luna Ghost.
- Light Is Not Good: His costume is mostly white and he's a sinister monster.
- Monster Clown: His design and mannerisms are somewhat similar to the Joker.
- Playing with Fire: He uses fire to scare and burn people.
- Starter Villain: The first antagonist faced in Scooby-Doo, who has no connection to the film's main mystery.
- You Meddling Kids: Said by him just after he was unmasked.
A college student who falls in love with Shaggy.
- Bare Your Midriff: Most (if not all) of her outfits are like this.
- Hair of Gold, Heart of Gold: Mary Jane is kind and sweet to everyone, as well as sharing Shaggy's love of food.
- Heroes Gone Fishing: Shaggy and Mary Jane were seen hanging out on the island and Shaggy wins a prize from a crane machine for Mary Jane.
- Sir Not-Appearing-in-This-Trailer: She never appears in the trailers.
- Trademark Favorite Food: Scooby Snacks, which she shares with Shaggy and Scooby.
- Vocal Dissonance: When Mary Jane says "No, Shaggy" when Shaggy tells her he has to rescue Scooby, she mysteriously sounds like a man. Justified because she was possessed at the time.
The leader of Scrappy-Doo's forces in Spooky Island.
The founder of the Spooky Island theme park that was imprisoned by Scrappy-Doo.
A college student who visited Spooky Island.
- Brick Joke: He first thought that he received a phone call when it turns out Scooby has to answer it. When Scrappy revealed his intentions to absorb Scooby's soul, Scooby thought he meant Melvin.
- Chekhov's Gag: He's introduced in a brief gag as a human who inexplicably shares his surname with Scooby, then is randomly brought up again by Scooby when Scrappy reveals that he plans to absorb Scooby's soul.
- The Generic Guy: The only thing special about him is the fact that he shares the last name as Scooby.
The inhabitants of Spooky Island.
- Body Horror: They extract a person's soul and then step into the body to possess them.
- Expy: The Demons are based on the Gremlins; Due to having similar reptilian designs, and the same weakness to sunlight.
- Lean and Mean: While they are tall, they are quite lean.
- No Name Given: There is no official name for the creatures.
- One-Gender Race: There are only males.
- Pre-Explosion Glow: When the monsters are exposed to the sunlight, they glow with bright spots just before they explode.
- Purple Is Powerful: They're colored purple and are strong monsters.
- Totally Radical: Once they possess people, the victims talk using ludicrous slang. They're really overdoing it when it comes to pretending to be normal college students.
- The Speechless: If they don't possess people, they don't talk.
- Trailers Always Spoil: Their method of possessing people was first revealed from the trailer.
- Weakened by the Light: They take control of human bodies to shield themselves against sunlight. Once their human bodies regain their souls and they're ejected out, the sunlight destroys them.
A Mexican wrestler employed by Scrappy-Doo and N'Goo Tuana.
Dr. Jonathan Jacobo / Evil Masked Figure / Heather Jasper Howe
A Mad Scientist who wanted to created monsters.
- Adapted Out: In the PC video game, Dr. Jacobo is never seen and both Heather-Jasper Howe and the Evil Masked Figure are two different characters.
- Adaptational Intelligence: He started out as the Pterodactyl Ghost, one of the monsters Mystery, Inc. faced in The Scooby-Doo Show. The incarnation in the original cartoon was not a scientist
- Big Bad: Of Scooby-Doo 2: Monsters Unleashed.
- Big "NO!": He yells this twice as the Evil Masked Figure.
- Cast as a Mask: Dr. Jonathan Jacobo and his disguises as the Evil Masked Figure and Heather Jasper Howe are all played by separate actors.
- Contrasting Sequel Antagonist: Since Scrappy-Doo posed as a founder of a theme park and wanted Scooby's soul, Dr. Jonathan Jacobo (a human being) wants to unmask the Mystery Inc. gang as fools with his technology.
- Expressive Mask: For the Evil Masked Figure and Heather-Jasper Howe.
- Evil Is Hammy: Especially as both Dr. Jacobo and the Evil Masked Figure.
- Faux Affably Evil: Dr. Jacobo doesn't believe that there is still good in him.
- Final Boss: The Game Boy Advance game ends with a final boss fight against the Evil Masked Figure.
- Gender Bender: Since he acted in My Fair Lady, he was able to dress up as a woman.
- Mad Scientist: He's an evil genius who uses his technology to bring the monster costumes to life.
- Master Actor: Said so by Jacobo.
- Master of Disguise: He plays both a masked figure and a news reporter convincingly.
- Same Character, but Different: He is apparently the same person as the Pterodactyl Ghost from The Scooby-Doo Show episode "Hang in There, Scooby-Doo". Aside from the costumed identity and first name, Jonathan Jacobo barely has anything in common with Johnny, being an evil genius who creates technology capable of bringing monsters to life and having originally used the Pterodactyl Ghost disguise to rob banks, when Johnny was a person of average intelligence who used the monster disguise as part of a scheme to pirate music.
- Sir Not-Appearing-in-This-Trailer: As Dr. Jonathan Jacobo, he is not shown in the trailers.
- You Meddling Kids: Said by him as he is arrested.
The curator of the Coolsonian Criminology Museum.
- Hollywood Nerd
- Large Ham: While he interrogated a man about the second museum robbery.
- Red Herring: There are a couple of scenes that are set up to make him look like the culprit. He gets into a fight with someone outside the Faux Ghost and Velma catches him in a secret room with a lot of artifacts on Johnathan Jacobo.
The former identity of the Black Knight Ghost.
- Affably Evil: Unlike Dr. Jacobo, he is aware that there is still good inside him.
- Evil Old Folks: He's an elderly man that Mystery Inc. unmasked in the past. Because of his arrest, he has a reason to seek out revenge towards the Mystery Inc.
- Eye Scream: He threatened to tear Mystery Inc.'s eyes out of their skulls and make them eat the eyes.
- Large Ham
- Sir Not-Appearing-in-This-Trailer: He never appears in the trailers.
The Cotton Candy Glob
A former costume that has been transformed into an edible monster by the Evil Masked Figure.
- All There in the Manual: A featurette reveals that a man named Timmy is the original identity of the Cotton Candy Glob.
- Big "NO!": He yelled it once Shaggy and Scooby start eating him.
- Canon Foreigner: He was created for the movie and never appeared in any of the original Hanna-Barbera cartoons.
- Food Eats You: He is a Cotton Candy Glob.
- Oh, Crap!: His reaction once he saw Shaggy and Scooby as they are ready to eat him.
- Too Dumb to Live: If he hadn't met Shaggy and Scooby, the Glob wouldn't be eaten.
Principal Deedle / The Specter
The principal of Coolsville High School, who is secretly plotting to use ghosts to find a time capsule.
- Big Bad: He is the main villain of The Mystery Begins
- Cast as a Mask: The villain's costumed identity is voiced by someone other than the actor portraying their true identity.
- "Scooby-Doo" Hoax: Played with. He was another criminal disguised as a supernatural being, but his plan was aided by a pair of real ghosts named Ezekiel Gallows and Prudence Prufrock.
Ezekiel Gallows and Prudence Prufrock
The ghosts of two deceased teachers of Coolsville High who were raised from the dead to aid the Specter's plan.
An evil witch who was burned at the stake in the past for terrorizing people with frog monsters.