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Just remember, dogs don't have nine lives.
~ Principal Deedle holding Scooby-Doo hostage.

Principal Deedle is the main antagonist of the 2009 film Scooby-Doo! The Mystery Begins. To steal a rare stamp, he impersonated the Dark Specter. He was portrayed by Shawn MacDonald.

Physical appearance

His costume was a black cloak with a white mask. While's he not in disguise he wears a brown suit with a bow tie.

Biography

Deedle used the Dark Specter disguise to scare his students away while he searched for a rare stamp called the "Erie Stamp," which was a misprint, and that it was buried in a time capsule below his school with the help of two real ghosts named Prudence Prufrock and Ezekial Gallows.

However Fred Jones, Daphne Blake, Velma Dinkley and Shaggy Rogers were blamed for his plans and were suspended then later expelled from Coolsville High. With the help of Scooby-Doo, they later returned, cleared their names, rescued Vice Principal Grimes and defeated Deedle.

After his evil plan has been foiled, it was presumed he was fired from his job as the principal and sent to prison for his crimes. Then Vice Principal Grimes becomes the new principal and unexpells Fred and the gang, declares them as heroes for saving Coolsville High, and apologizes for accusing them.

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Animated Features
Meowrice | Meowrice's Henchmen | Mouse King | Mouse Queen | Joker | Phantasm | Salvatore Valestra | Arthur Reeves | Chuckie Sol | Buzz Bronski | Grundel Toad | Berkeley Beetle | Mr. Mole | Mrs. Toad | Ms. Fieldmouse | Queen Gnorga | King Llort | Darla Dimple | Max | Mrs. Prysselius | Thunder Karlsson and Bloom | Ruber | Griffin | Ruber's Minions | Bladebeak | Kent Mansley | Kralahome | Master Little | The Jokerz (Dee Dee Twins, Chucko & Woof) | Count Grisham | Cheswick | Mojo Jojo | Gangreen Gang | Ebenezer Scrooge Puppet | Barkis Bittern | Maudeline Everglot | Stan Beals | Noah the Elder | Leopard Seal | Aguila | Stone Generals (Gato & Mono) | Karai | Foot Clan | Eddy's Brother | Kanker Sisters | Kevin | Surtr | Nyra | Kludd | Pure Ones | Lord Business | Super Secret Police (Bad Cop & Sheriff Not-A-Robot) | Duplo Aliens | Mr. Ross | Future Mordecai | Mordecai | Rigby | Benson Dunwoody | Muscle Man | Hunter | Pigeon Toady | Wolf Pack | Penguins | Joker (Lego) | Harley Quinn (Lego) | Catwoman (Lego) | Poison Ivy (Lego) | Two-Face (Lego) | Phantom Zone Criminals | Lord Garmadon | Slade (Teen Titans Go!) | Balloon Man (Teen Titans Go!) | Lex Luthor (Teen Titans Go!) | Stonekeeper | Rex Dangervest | Velociraptors (Lego) | Foot Clan (Shredder & Baxter Stockman) | League of Assassins (Ra's al Ghul (Batman vs. TMNT), Ubu (Batman vs. TMNT) & Talia al Ghul (Batman vs. TMNT)) | Joker (Batman vs. TMNT) | Harley Quinn (Batman vs. TMNT) | Scarecrow (Batman vs. TMNT) | Mr. Freeze (Batman vs. TMNT) | Poison Ivy (Batman vs. TMNT) | Bane (Batman vs. TMNT) | Two-Face (Batman vs. TMNT) | Penguin (Batman vs. TMNT) | Hexagon (Trigon (TTG) & Trigon (Original)) | Spinel | Pink Diamond | Dick Dastardly (2020) | Muttley (2020) | Cerberus | Rotten Robots | Dusty

Live Action Films
Scut Farkus | Grover Dill | Gremlins (Stripe, Brain Gremlin, Daffy, George, Lenny, Bat Gremlin & Electric Gremlin) | Ruby Deagle | Mama Fratelli | Audrey II | Orin Scrivello | Mr. Igoe | Beetlejuice | Sandworms | Witches (Grand High Witch, Susan Irvine, Nicola Cuttle, Pamela, Lois Leffour, Mildred, Elizabeth, Henrietta, Jacqueline & Beatrice) | Cushing Catheter | Clarice Kensington | Lawrence Van Dough | Ferguson | Miss Minchin | Mr. Swackhammer | Monstars | Martians (Martian Leader, Martian Ambassador & Martian Girl) | John Wesley | Susan McAlester | Jim Whitlock | Mako Sharks | Mr. Tinkles | Thrax | Mayor Phlegmming | Bruiser | Joe Cramp | Thrax's Henchmen | Scrappy-Doo | N' Goo Tuana | Zarkos | Demons | Luna Ghost | Spiders (Consuela & Tank) | Mr. Chairman | Bob Smith | Jonathan Jacobo | Arthur Slugworth | Agent 23 | Siegfried | Dalip | Principal Deedle | Ezekial Gallows | Prudence Prufrock | Decoy Queen | Kitty Galore | Paws | Mayor Brown | Wanda Grubwort | Lake Monster | Angelique Bouchard | Dr. Julia Hoffman | Precursors | Kaiju (Trespasser, Knifehead, Mutavore, Otachi, Leatherback, Raiju, Scunner & Slattern) | M.U.T.O. | Victoria Vinciguerra | Léon Rom | Skullcrawlers (Skull Devil) | Preston Packard | Mathias Vogel | Ana Miller | Nolan Sorrento | Innovative Online Industries (I-R0k, F’Nale Zandor & Sixers) | Claire Wyden | Brett Wyden | George, Ralph and Lizzie | The Meg | Jack Morris | Shere Khan | Tabaqui | Howard Clifford | Ditto | Sebastian | Ann Laurent | King Ghidorah | Rodan | Alan Jonah | Asher Jonah | Emma Russell | The Banana Splits | Karl

Shorts
Daffy Duck | Sylvester | Tasmanian Devil | Wile E. Coyote | Elmer Fudd | Yosemite Sam | Marvin the Martian | Instant Martians | Gossamer | Tom | Jerry | Spike

Television
The Grinch | Cousin Mel | Snow Miser | Heat Miser | North Wind

           Scooby-doo logo Villains

Television
Scooby Doo, Where are You!: Black Knight | Phantom | Captain Cutler | Miner 49er | Indian Witch Doctor | Elias Kingston | Apeman | Charlie | Puppeteer | Ghost Clown | Big Bob Oakley | Mummy | Witch | Bald Zombie | Space Kook | Redbeard | Phantom Shadow | Snow Ghost | Ghost of Mr. Hyde | Scare Pair | Zen Tuo | Caveman | Creeper | Phony Phantom | Witch Doctor | Werewolf | Wax Phantom
The New Scooby-Doo Movies: Gunslinger | Geronimo | Hooded Man | Vulture | Scarecrow | Captain Moody's Ghosts | Phantoms | Zalia Z. Fairchild | Shark Men | Cackling Skeleton | Ghost of Bigfoot | Red Baron | Redbeard's Ghost | Haunted Horseman | Moat Monster | Viking Mannequin | Davy Crockett Mannequin | Dryad | Troll | Ghost of Paul Revere | Minuteman Ghost | Redcoat Ghost | Hooded Ghosts | Captain Scavenger | Injun Joe | Jadal | Fireball McPhan | Lorne Chumley | Windmakers | Green Globs | Ghostly Strongman
The Scooby-Doo Show: Ebenezer Crabbe | Netty Crabbe | Ghost of King Katazuma | Aztec Statue Monster | Gator Ghoul | 10,000 Volt Ghost | Headless Horseman | Ghost of Merlin | Black Knight | Dr. Coffin | Ambulance Guys | No-Face Zombie | Gorilla | Mamba Wamba | Zombie Lila | Mamba Zombie | Demon | Tamuka | Medicine Man Ghost | Demon Shark | Octopus Monster | Kelp Monster | Captain Pescado | Rambling Ghost | Technicolored Phantoms | Spirits of '76 | Viking Ghosts | Gramps the Vamp | Pterodactyl Ghost | Phantom of Milo Booth | Phantom Racer | Witch McCoy | Zombie | Futuristic Monster | Sea Creature | Captain Clements | Willawaw | Owlmen | Skeleton Men | Snow Beast | Ghost Witch of Salem | Tar Monster | Ghost of Finnyan McDuff | Old Iron Face | Jaguaro | Cat Creature | Mantis Creature | Disc Demon | Moon Monster | Ghostly Gondolier | Ghost of Juan Carlos | Anthos | Beast of Bottomless Lake
Scooby-Doo and Scrappy-Doo: Blue Scarab | Night Ghoul | Alien (Scooby-Doo) | Neon Phantom | Snake Demon | Sky Skeleton | Dragon Beast | Devil Bear | Sea Beast | Lady Vampire of the Bay | Star Creature | Shadow Creature | Ghost of Jeremiah Pratt | Great Haldane | Minotaur | Carl and Tony
The Richie Rich/The Scooby-Doo Show: Sylvester | The Burglar | Arabian Magician | Cat Man | Sailor | Werner Wolf
The New Scooby and Scrappy-Doo Show: Olaf the Terrible | Viking Pirates | Seaweed Monster | Great White Shark | Mud Monster | Hound of Bakervilles | Dinosaur | Creature from the Chem Lab | Masked Manx | Mr. Cyclops | Ivan | Randar the Ape-Man | Neanderthal Monster | Chameleon | Phantom of the Soaps | Clown | The Minotaur | Casey O'Reily | Gremlin | Specter of Sports Cars | Chef Maras | Mummy | McBaggy Roger
The New Scooby-Doo Mysteries: Red Skull | Maid Mummy | Norma Deathman | Sea Demons | Cyclops | Mastermind | Giant Bees | Ebenezer Overview | Codefinger | Zombies | Evil Elf | Mad Sea Lion | Dr. Van Helsing | Ghost of George Washington | Ghost of Abraham Lincoln | Colonel Beauregard | Laser Band Thief | Ghost of Sherlock Holmes | Monster Mutt | Monster Mouse | Ghost of Christmas Never
The 13 Ghosts of Scooby-Doo: Bogel and Weerd | Werewolves | Maldor the Malevolent | Queen Morbidia | Reflector Specter | Zomba | Captain Ferguson | Nekara | Marcella | Time Slime | Demondo | Rankor | Professor Phantazmo | Zimbulu
A Pup Named Scooby-Doo: Green Ghoul | Sludge Monster | Cheese Monster | Dr. Croaker | Al Cabone | Manny the Mauler | Boogedy Bones | Ice Demon | Samurai Ghost | Headless Skateboarder | BooBeard | Totem Spirit | Ghost Chef | Stinkweed | Dogcatcher Ghost | Alien Slug | Ghost of Purvis Parker | Chickenstein | Burger Monster | Dinkley 2000 | Zombo | Boogey Biker | Astronaut Ghost | Bigwig | Hooded Heifer | Moving Mollusk | Nasty-Doo | Buster McMuttMauler | Ghost of Mrs. Shusham | Waitro
What's New Scooby-Doo?: Snow Creature | Dinosaur Spirit | Space Ape | Leland Brothers | Possessed Mystery Machine | Ghost of Rufus Raucous | Jungle Demons | Motoshondu | Headless Snowman | Living Toys | Faceless Phantom | Zombie Gladiator | Baseball Specter | 30 Foot Shaggy | Mummy | Mademoiselle Chantal | Gusano Grande | Jeeves | Vampire | Marcy | Cat Creature | San Franpsycho | Invisible Madman | Scooby Snack Monster | Glasburgh Dragon | Fish Fiend | Wakumi | Centaur | Creepy Keeper | Cold Steel | Evil Mystery Inc. | Titanic Twist | Demon Farmer | Frozen Fiend | Menacing Metallic Clown | Toxic Terror | Hong Kong Dragon | Skeleton Driver | Gold Monster | Coral Creature | Rama Yam | Osomon
Scooby-Doo Mystery Incorporated: Slime Mutant | Gator People | Ghost Truck | Man-Crab | Que Horrifico | Alice May | Phantom | Gnome | Humungonauts | Fright Hound | Vampire | Char Gar Gothakan | Cicada Creature | Lord Infernicus | Shadowy Orc | Aphrodite | Danny Darrow | White Wizard | Nightfright | Fish Freaks | Manticore | Headless Horror | Shadowy Figure | Dead Justice | Obliteratrix | Freak of Crystal Cove | Crybaby Clown | Baba Yaga | Dreamweaver | Junk | Graveyard Ghoul | Dark Lilith | Hebediah Grim | Fiend | Scarebear | Dragon | Dr. Zin | Mummy | Aliens | Rude Boy and the Ska-Tastics | Gluten Demon | Dandy Highwayman | Fake Fred | Old Daphne | Priestess | Mr. E | Ed Machine | Professor Pericles | Evil Entity
Be Cool, Scooby-Doo!: Elias Kingston | Zatari Warrior Spirit | Sea Creatures | Gargoyle | Ghost of Chip Braverton | Sobek | Crystal Crawler | Headless Count | Ghost of Prima Donna | Yeti | Butler 3000 | Alien | Phantoms | Pterodactyl | Stealin' Stan | Gremlin | Sorcerer | Swamp Beast | Mr. Roundy | Cyclops | Scarecrows | Cliff Bride | El Bandito | Madcap | Viking Ghosts | Toxic Mutant | Baba Yaga | Dorsalfoot | Werewolf | Evil Jester | Houndbeast | Disorient Express Monsters | Kaniaku | Ghost of Amos Littlefield | Skull Alien | Ghost of Mother | Ghost of Archie Barnes | Mutant Rabbit | Arachne | Vampire | Plant Monster | Minus | Bubby | Iceman | Ape Man | Garbage Monster | Ghost Chef | Demon of Salem | Professor Huh | Rose
Scooby-Doo and Guess Who?: Bee Man of Alcatraz | Swamp Monster | Ghost Sergeant | Fish Monster | Screaming Skulls of London | Cat Mummy | Minotaur | Hugo Hauser | Madds Markson Monster | Technomancer | Spectral Speedster | Dinosaurs | Sia Doppelganger | Pazzo the Ghost Clown | Man-Bat | Joker

Animated Movies
Revolta | Grim Creeper | Colonel Calloway | Dracula | Simone Lenoir | Lena Dupree | Jacques | Snakebite Scruggs | Morgan Moonscar | Ben Ravencroft | Sarah Ravencroft | Max | Steve | Laura | Phantom Virus | T-Rex | Bill McLemore | Sea Serpent Smugglers | Wildwind | Yowie Yahoo | Mr. Smiley | El Chupacabra | Loch Ness Monster | Snookie Waeawa | Tiny-Tikis | Wiki-Tiki | Amelia von Butch | Ghost of Cleopatra | Biff Wellington | Mr. Mysterio | Professor Jeffries | Krudsky | Goblin King | Sojo | Robot Ninjas | Island Tribe | Miss Mirimoto | Black Samurai | Ranger Knudsen | Babyface Boretti | Ricky LaRue | Ghost Bear | Shannon Lucas | Inferno | Rafe & Kyle | Ye Phantom Parrot | Clayface | Crimson Cloak | Riddler | Red Ghost | Bradley Bass | Asmodeus | Cat Creatures | Dick Dastardly (2020) | Muttley (2020) | Cerberus | Rotten Robots | Dusty

Live Action Movies
Scrappy-Doo | N' Goo Tuana | Zarkos | Demons | Luna Ghost | Jonathan Jacobo | Principal Deedle | Ezekial Gallows | Prudence Prufrock | Wanda Grubwort | Lake Monster | Carol

Video Games
Ghoul King | Mastermind | Mindi Stiles | Robert Zabrinski | Selena Drake | Walter Peabody | Ghost Hunter Haunter | The Phantom | Toy Robotus | The Deep One | Witch Queen

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