Lemont

Main Villains
Mr. Krabs | Plankton | Karen Plankton

Bikini Bottom
Anchovies | Bubble Bass | Bikini Bottom Police Department (Al Gristlepuss) | Kevin C. Cucumber | Flats the Flounder | Fake Health Inspector | Con Man | Plankton Family (Grandma Plankton) | Tattletale Strangler | Grandma | Squidward's House | Carl | Human Resources | Sergeant Roderick | Kelpshake | Stinky | Classmates | BlackJack SquarePants | T.U.O.O.F.A.T.T.A.F.A.D. (Miss Gristlepuss) | Undefeated Champions | Patrick's Arm | Colonel Carper | Prison Inmates | Mister Weiner | Pizza Pete | Señor Taco | Noodleman | Weenie Goons | Stockholder Eel | The Sharks | Don Grouper | Sticky Fins Whiting | Dorsal Dan | Art Appraiser | Nurse Daisy Bazooka | Walter Haddock | Children | Empty Head Society (Ice Cream King, Little Idiot) | Gale Doppler | Chum Bucket Glove | Goofy Goober's Ice Cream Party Boat (Goofy Manager, Goober Goons) | Timmy and Tina | Animatronic Hieronymus Glove | Ringmaster Mudkrab | Percival Rockhound | Turtle | Acceleration T. Greenlight | Jeff Tentacles | Baleen Baby | Baby Whales

Monsters and Creatures
Queen Jellyfish | Nematodes | Big Lenny | King Jellyfish | Seagulls | Alaskan Bull Worm | Old Bluelip | Sea Bears | Guard Worm | Dragon Jellyfish | Fleas | Sparky | Zombie | Pet Rioters | Big One | Puffy Fluffy | Rrarrg | Madame Hagfish | Eel | Earworm | Sea Whelks (Mother Sea Whelk) | Mr. Krabs' Worms | Abominable Snow Mollusk | SpongeBob Demon | Giant Krabby Patty | Jelliens (Jellien Leader) | Sea Urchins | Sea Monkey | Ghosts (Rusty Rickets, Frank, Motorcycle Ghost, Fat Ghost, Horned Dragon Ghost, Four-Eyed Ghosts, Dragon Ghost, Bearded Ghost, Fish Creature Ghost) | Yeti Krab | Sewer Snake | Monster | Worms | Spot's Children | Sea Bunnies (Bunny Wunny) | Virus | Giant Jellyfish | Filthy Muck | Bubble Zoo Animals | C.H.U.M. | Demon | Deadly Monsters (Monster Island) | Pecan Sandy | Breakfast Monster |

Supervillains
Clam Head Candy Cad | Every Villain Is Lemons (Man Ray, Dirty Bubble, Jumbo Shrimp, Notodoris, Sub-Marinara, Helen the Felon) | Kelp Thing | The Moth | The Bad Guy Club For Villains (Sinister Slug, Atomic Flounder) | Robot Mantis | Hoodoo Guru |

Pirates and Vikings
Flying Dutchman | Captain Cruel | Chieftain | Gordon | Olafs | Redbeard Krabs | Lord Poltergeist | Charlie | Pirate Queen | Captain Scarfish | Capn' A. Krabs | Planky

Others
Dream Entities (Jack M. Crazyfish, Boaty, SpongeBob Entities) | Bad Crab | Doodle Entities (DoodleBob, Mini DoodleBobs, Squid Doodle, Doodle Squidward, Mr. Krabs and Gary) | Hash-Slinging Slasher | Nosferatu | Alternate Reality Mr. Krabs | Gorilla | Planktonamor | Dark Knight | Chumbot | Master Udon | The Tickler | Lipp Cervas | Filthy Phil | Lord Royal Highness | Inferno Island Inmates | Warden | Barney & Bernie | Dead-Eye Plankton | Bubble Poppin' Boys | Destructive Boys | Triton | Trenchbillies (Ma Angler, Cletus & Cletus, Jethra, Junior, Uncle Belcher, Betsy, Buford) | Orin J. Ruffy | Jewel Triplets Gang | Abrasive Sponge | Plankton Robots | Bank Robbers | Fuzzy Acorns | Karen 2.0 | ToyBob | Red Ball | The Fisherman | SpongeBob CopyPants | King Neptune's Trident | Spongy Spongy | Cuddle E. Hugs | Coupe | Tiny SpongeBob and Patrick | Machines | ChefBob | Off Model SpongeBob, Gnarly Squid and Money Krabs | Swamp Natives | PlanKrab | Weird Machine | Mr. Charleston | Narwhals | Q.T.-π | RoboGary | Sandroid | PlankBot | Saltwater Trees | Meteor | Giant Krabs | Queen Karen | Magic Mirror | Tiki Aliens | Weenie J. Wiener | Elmer Eraser | Newsbot 2000

Spin-off Show Villains
Kamp Koral: SpongeBob's Under Years
Rock Monster | Food Truck | Urnie
The Patrick Star Show
Dr. Plankenstein | Pat-gor | SpongeMonster | Fentin Finkle | Crabina Finkle | FitzPatrick | Beelzebass | Enigma Shapeshifter | Evil Moustache Patrick | Agnes Steelhead | Sockeye Sammy | Walter the Waiter | Foster Family | Comedy K Novelties (Tour Guide) | Benjamin B. Nana | Mr. Rilla | The Patrick Star Show: The Sitcom (Fake Patrick’s Family)

Movie Villains
The SpongeBob SquarePants Movie
Dennis | The Thug Tug Gang (Victor, Thief, DJ) | Cyclops | Frog Fish Monster | Chum Slaves |
The SpongeBob Movie: Sponge Out of Water
Burger-Beard | Plankton Robot |
The SpongeBob Movie: Sponge on the Run
Poseidon’s Army (King Poseidon, Chancellor, Lemont, King Poseidon's Guards) | El Diablo
Saving Bikini Bottom: The Sandy Cheeks Movie
B.O.O.T.S. (Sue Nahmee, Cuda, Kyle and Phoebe) | Rattlesnakes
Plankton: The Movie
Hydra Karens (Evil Karen, Smart Karen, Snarky Karen, New Karen)

Video Game Villains
Sea Ants | Robots (SpongeBot SteelPants, Robo-Plankton, Robo-Patrick, Robo-Sandy, Robo-Squidward) | Prawn (Admiral Prawn) | Sneaky Hermit | Evil Syndicate | Krabzilla | Dreaded Patrick | Supersized Patty | Patty UFO | Parasites | King Gorge | The Mawgu | Doodled | Doodle Patrick | Globulous Maximus | Nanobots (PlanktoBot, PatBot, SquidBot, Wee Yellow Bot, Demento Bot, Tenderizer) | Seymour Scales | The Great Wumbozi | Madame Kassandra | Cosmic Jelly Monsters | Pom Pom | Twitchy the Witchy | Glovey Glove

Comic Book Villains
Octopus King | Catfishstress | Commanding Conch | Kraken