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This page is a list of antagonists in Uncle Grandpa.

List of Characters
Name Description and Appearances Image
Abe
A deceased pet fish who died in 2001. It knows Italian Karate and beat up Mr. Gus as seen in Tiger Trails.
Abe transparent
Alien Goose
This is an Alien Goose that attacked Pizza Steve in Uncle Grandpa's Incredible Journey.
Alien Goose
Alien Monster
An that was being harbored by another alien and rampaged a space ship in Space Oddity.
Alien Monster
Alien Skulls
One of Kev's drawn creations from Viewer Special. Kev made them fall from the sky like rain in the drawn world he made for the UG Gang.
Alien skull
Amazon Doll 1
Amazon Dolls are monsters that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Amazon doll 1
Amazon Doll 2
Amazon Dolls are monsters that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Amazon doll 2
Amazon Doll 3
Amazon Dolls are monsters that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Amazon doll 3
Andrew W.K.
Andrew W.K. is a celebrity who made a guest appearance in the episode "Shower Party". He ran a party throwing business and helped Pizza Steve and Mr. Gus throw a party while Uncle Grandpa was in the shower.
Andrew W.K
Angry Clouds
Clouds that didn't like Mr. Gus in Cloud Gazing.
Cloud Gazing 05
Angry Man Johnson
Angry Man Johnson is an angry old man that appeared in the episode Charlie Burgers and Fleas Help Me.
AMJ
Arm Chair Monster
Arm Chair Monster is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Armchair monster
Aunt Grandma
See Aunt Grandma.
Aunt Grandma
Bank Robber
A man that got captured by Baby Uncle Grandpa in Uncle Grandpa Babies.
Bank Robber
Bartek
A man that gotten beaten up by the Uncle Grandpa Babies in Uncle Grandpa Babies.
Bartek
Beardman
Beardman is a character that appeared in the short "The Legend of the Beardman:The Nighttime Tickler". He went to jail after getting caught for tickling people in their sleep.
Beardman
Bears
Animals that tried to attack people in Dog Day and Weird Badge.
Weird Badge 56
Belly Bug
Belly Bug appeared in the episode Sick Bag as the main cause of Belly Bag's illness.
Belly Bug
Birdman
A giant bird with muscular man arms who chose to reside in the RV's attic, he became a real problem to everyone in Birdman.
Birdman
Black Hole Monster
Black Hole Monster is a main antagonist that appears in the episode "Charlie Burgers". During the episode, Charlie Burgers almost gets sucked into a black hole with this inter-dimensional space beast.
Black Hole Monster
Blue Alien
Blue Alien is a character that appears in the short Xarna: She-Warrior of the Apocalypse Part 2. He believes Xarna is his bride, but she says otherwise.
Blue alien
Blue Monster
A blue, horned, four armed monster that attacked the gang in Lunch Break.
Blue Monster
Bottom Bag
See Bottom Bag.
Bottom Bag Transparent
Breakfast Bird
The Breakfast Bird is a minor character that only appears in the Uncle Grandpa episode "Mystery Noise". It makes an annoying sound to wake up the gang in the morning and remind them that their breakfast is ready. It unfortunately met its demise when Uncle Grandpa suggested he cook it for breakfast.
Transparent breakfast bird
Cactus Alien
Cactus Alien is the main antagonist of Jorts. It was destroyed by Mr. Gus because it saw his jorts and began to literally crack up from laughter.
Cactus alien
Cheesepuff Mike
See Cheesepuff Mike.
Cheese Puff Mike Troll
Chinese Take Out Delivery Guy
Appeared in Misfortune Cookie. He delivered food to the UG Gang, but when he did not receive a tip he decided to get revenge by tricking Uncle Grandpa into thinking his own friends were betraying him by hiding inside his body.
Chinese Take Out Delivery Guy
Christopher Columbus
Christopher Columbus was the main antagonist of 1992 Called. He had a pair of pants that belonged to 1992 after Uncle Grandpa accidentally sent them to 1492 instead of 1992. He is also the inventor and founder of the martial arts style "Italian Karate". He is later arrested by the Time Police for violating time law and as a result Uncle Grandpa discovers America instead.
Christopher Columbus
Computer Cat
Computer Cat is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark. He is most likely a parody of how popular cat videos are on the internet.
Computer cat
Crab-Sapiens
Crab-Sapiens appeared in Grandpa at Arms. They stormed the castle Uncle Grandpa and Lewis were trying to protect. They were just regular crabs in reality (outside of the pretend world Uncle Grandpa and Lewis were playing in).
Crab Sapien
Crazy Baby
See Crazy Baby.
Crazy baby
Criminal
This criminal is a primary antagonist appeared in "More Uncle Grandpa Shorts" in the short "Weird Man Catches a Criminal" when he was robbing a civilian.
Burglar
Curly
One of the pizza eaters that participated in the Pizza Eating Contest in Prank Wars. He resembles Curly from The Three Stoodges.
Curly
Demons
Monsters that was casted by Uncle Grandpa to mess with the Beastoid Bros as seen in Beastoid Bros.
Beastoid Brothers 43
Dougie
A deceased pet hamster who knows Italian Karate as seen in Tiger Trails.
Doug transparent
Drum Monster
One of Kev's drawn creations from Viewer Special.
Drum monster
Ducks
Animals that attacked Uncle Grandpa, Josie, along with some other high school students in Duck Lips.
Duck
Emperor Krell
Emperor Krell is a minor character and the true main antagonist in the "Uncle Grandpa" episode Space Emperor.
Emperor krell transparent
Evil Forces Shadow Guy
The villain of the Kung-Fu Turtles.
Shadow Guy
Evil Gnome
A gnome who threatened to kill Uncle Grandpa as seen in Food Truck.
Evil Gnome
Evil Grass
Grass that captured Uncle Grandpa and the Nameless Boy with White Shirt in Birdman.
Uncle Grandpa in Birdman 23
Evil Lamp
Evil Lamp is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Lamp monster
Evil Robot
A robot that came from a basketball in Science Time with Uncle Grandpa.
Evil Robot
Fan Monster
Fan Monster is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Fan monster
Fan Pterodactyl
Fan Pterodactyl is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark. Susie was able to control this particular monster to help Uncle Grandpa out of the quilt sand.
Fan pterodactyl
Fido
A deceased dog who knows Italian Karate. It tried to go toe and toe with Giant Realistic Flying Tiger but failed miserably as seen in Tiger Trails.
Fido transparent
Fleas
Little creatures that caused Charlie Burgers discomfort in Fleas Help Me.
Fleas
Foreign Madman
A foreign man who threatened to destroy America in Uncle Grandpa Babies.
Foreign Madman
Frisky
A deceased pet cat who knows Italian Karate and beat up Belly Bag as seen in Tiger Trails.
Transparent frisky
Frankenstein's Brain
Frankenstein's Brain is the main antagonist of Haunted RV. It turned the RV into a haunted house in order to successfully scare 3 tough teenagers.
Frankenstein's Brain
Funny Face Head
The Funny Face Head is the main antagonist of "Funny Face". He was accidentally created by Uncle Grandpa when he made the ultimate funny face. Unfortunately for him and his friends, the Funny Face Head took a life of its own and terrorized them throughout the RV.
Screenshot (236)
Galaxy Guardians
Appeared in Taco Comet. Tricked Uncle Grandpa into believing they were galaxy guardians looking out for the safety of the Taco Comet. Instead, they took the taco for themselves and ate it.
Galaxy Guardians
Garbage Monster
Appeared in the episode Wasteland as a result of Uncle Grandpa's negligence to take the trash out and slip up in operating the microwave properly. She is the result of all the leftover food Uncle Grandpa left behind half eaten. At first she is destructive, but then Uncle Grandpa offers to take her out on a date, which goes by fine until she tries to kiss him, in which he bails on her and leaves her stranded at a restaurant alone. Jim sees her, however, and decides to dump his cactus for her.
Garbage Monster
Gary
Gary is the main antagonist of the episode "Uncle Grandpa Sitter". He is a demolition robot set to destroy The UG RV after Uncle Grandpa accidentally ate his chili dog.
Gary
G-Dog
G-Dog is part of Kid Cousin's crew and appeared in the episode Ballin'. He is voiced by Kevin Michael Richardson.
G Ddog
Giant Mouse
A giant mouse Tiger grew in Tag Sale and started to attack the Moonies.
Giant Mouse
Ghosts
Dead people haunting a house in Ghost Math.
Ghosts
Giant Eagle
A giant bird that held the guys captive in Charlie Burgers and in King Gus.
Giant Eagle
Glow Worms
These pests infested the RV in Uncle Grandpa's Incredible Journey.
Glow Worms
Gorilla
Gorilla is a gorilla from the zoo that attacked Adam in "Brain Game". Luckily for him, Pizza Steve was able to defeat it by button mashing the controller inside Adam's head. It is the main antagonist of the episode.
Gorilla 1
Gorilla (Wrestling Fan)
This gorilla only appeared in The History of Wrestling. He is more anthropomorphic than the previous gorilla. He wears nothing more than pink boxer shorts with yellow polka dots. He also really likes Peanuts.
The History of Wrestling 023
Gornak
Gornak is an alien that appears in Space Emperor. He resides in the Muddy Prison Dungeon where prisoners are sent to fight him. He was accidentally defeated by Uncle Grandpa because Uncle Grandpa did not realize Gornak was viciously attacking him. Rather, Uncle Grandpa believed Gornak was being playful despite the fact he told him that he had important matters to attend. Uncle Grandpa defeated Gornak by disciplining him like a child.
Transparent gornak
Green Alien
Green Alien is a character that appears in the short Xarna: She-Warrior of the Apocalypse Part 2. He fought with Xarna on top of a truck, but was ultimately defeated. He has the power to grow extra limbs and body parts when struck. A trait Xarna used against him by hitting him so many times he grew to gigantic proportions, allowing him to be easily knocked over. He was last seen tumbling down the road after Xarna pushed him over the edge of the truck.
Green alien 1
Green Dragon
The Green Dragon is a Dragon who kidnaps Pizza Steve in the comic "The Camping Trip" in Uncle Grandpa No. 2.
Green Dragon
Grimgoff
Grimgoff are secondary antagonists in the short "Fishing with Uncle Grandpa" in the show Uncle Grandpa. They were attacking Uncle Grandpa and The Not Now Kid on their adventure.
Grimgoff transparent
Guard Dog
Appeared in Prison Break.
Guard Dog
Guitar Monster
One of Kev's drawn creations from Viewer Special.
Guitar monster
Hair Monster
Hair Monster appeared in New Kid. It is the result of Tommy's hair gaining sentience.
Hair Monster
Jimmy
Jimmy is an employee of Uncle Grandpa Land and appeared in the episode Uncle Grandpa Land. He wouldn't let Pizza Steve on the ride because he was too short. He also really loves Chiggity Churros.
Jimmy (UGL)
Kevin E. Peepants
See Kevin E. Peepants.
Transparent kev
Kid Cousin
Kid Cousin appeared in the episode Ballin'. He challenged Uncle Grandpa in his friends to a game of basketball after Uncle Grandpa accidentally parked the RV in his court. He is voiced by Eric Bauza.
Kid Cousin
Killer Rat Tail
Killer Rat Tail appeared in New Kid. It is the result of Tommy's hair gaining sentience.
Killer Rat Tail
Knife Man
One of Kev's drawn creations from Viewer Special. It's a giant knife that holds a ray gun.
Knife man
Larry
One of the pizza eaters that participated in the PizzEating Contest in Prank Wars. He resembles Larry from The Three Stoodges.
Larry
Laundry Angler
Laundry Angler is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Laundry angler
Laugh Gremlins
Appeared in Not Funny. They grew within Jackie's body as a result from her suppressing laughter.
Laugh Goblin
Leftovers
Leftovers were bits of half eaten food Uncle Grandpa and the gang left behind in the garbage in Wasteland. All they want is to be eaten, but instead Uncle Grandpa accidentally transforms them into the Garbage Monster.
Leftovers
Lexus
Lexus is part of the Little Miss Scouts and is always accompanied by Lori and Lisa as seen in Weird Badge.
Lexus
Light Switch Monster
Light Switch Monster is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark. This monster blocked them from turning on the light, which forced them to become scary monsters themselves to scare them all away so they can successfully turn on the light. It also appeared in the game Reckless Road Trip as one of the minor enemies frequently encountered. When killed, it gives you a multi-shot power up.
Light Switch monster
Lisa
Lisa is part of the Little Miss Scouts and is always accompanied by Lori and Lexus as seen in Weird Badge.
Lisa (Weird Badge)
Lori
Lori is part of the Little Miss Scouts and is always accompanied by Lexus and Lisa as seen in Weird Badge.
Lori
Mama Grimgoff
Mama Grimgoff is the large Grimgoff that appeared in Fishing with Uncle Grandpa. She attacked Uncle Grandpa and The Not Now Kid on their adventure.
Mama grimgoff 1
Mamma Pizzeria
Appeared in Uncle Grandpa No. 3 in the comic "Anchovy Moon". She is the one responsible for giving Pizza Steve a curse where every Anchovy Moon that occurs he will turn into an inedible anchovy pizza.
Mamma Pizzeria
Man Eating Giant Gophers
An obstacle on the race track in Nacho Cheese.
Man Eating Giant Gophers
Man-Eating Shark
A sea animal Uncle Grandpa fell in love with in Pizza Eve.
Man-Eating Shark PE
Math Homework Man
The main villain of the Uncle Grandpa Movie.
Math Homework Man
Moe
One of the pizza eaters that participated in the Pizza Eating Contest in Prank Wars. He resembles Moe from The Three Stoodges.
Moe
The Monster
The Monster was in the comic "The Scariest Story Ever". It attacks people leaving Burger Hut to eat their burger and french fries as seen in Uncle Grandpa No. 1.
The Monster
Mole People
A species of people who were trying to overthrow the Food Court in Hundred Dollar Gus.
Mole People
Mooon Man
See Mooon Man.
Moon man
Mouse
See Mouse.
Imageedit 3 7305435888
Mummy
The Mummy is a main antagonist who appears in Uncle Grandpa Ate My Homework!. He was unleashed from his tomb by Dennis when he was explaining to Mrs. Numty about what happened to his homework.
Mummy transparent
Mustache Monster
Mustache Monster is a main antagonist that only appears in the episode "Moustache Cream".
Mustache monster
Mutant Chocolate Rabbits
Chocalte rabbits that mutated from radiation and attacked everyone one Earth in Uncle Easter.
Mutant Chocolate Rabbits
Nacho Cheese
See Nacho Cheese.
NnnNachos
Nameless Teenager as a Vampire
One of the teens from a Halloween trio that were seeking the scariest haunted house experience as seen in Haunted RV.
Nameless Teenager as a Vampire
Nameless Teenager as a Zombie
One of the teens from a Halloween trio that were seeking the scariest haunted house experience as seen in Haunted RV.
Nameless Teenager as a Zombie
Nameless Teenager with a Hockey Mask
One of the teens from a Halloween trio that were seeking the scariest haunted house experience as seen in Haunted RV.
Nameless Teenager with Hockey Mask
Night Stand Monster
Night Stand Monster is a monster that sprung out of Susie's and Uncle Grandpa's imagination in Afraid of the Dark.
Monster of the Night Stand
Night Wolf
The Night Wolf is a creature that lives in the Night Wolf dimension and appears in the episode Belly Brothers. They travel in a pack of 6 and tried to eat Uncle Grandpa and Benny. However, Benny and Uncle Grandpa were able to use their special belly powers to defeat the Night Wolves and return home. One Night Wolf also made an appearance in Bezt Frends. He returned Pizza Steve back to Uncle Grandpa after Uncle Grandpa left him in the forest and scolded Uncle Grandpa for littering.
Night wolf
Octodad
Octodad is a major antagonist in the short E-Mail the Duck. He kidnapped E-Mail because he thought the rubber duck was his son, Octoson. The Octoson bears some resemblance to E-Mail, which is why he was mistaken.
Daddyoctodad
One Eyed Worm Monster
One of Kev's drawn creations from Viewer Special.
One eyed worm monster
Pencil Monster
Pencil is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Pencil monster
Phone Monster
A Monster that was casted by Uncle Grandpa to mess with the Beastoid Bros as seen in Beastoid Bros.
Phone Monster
Purple Aliens
Purple Aliens are from the short Xarna: She-Warrior of the Apocalypse. They were seemingly harassing Xarna when she went to put gas in her motorcycle. However, after beating them all up, Xarna realized the aliens were just trying to inform her that there was no more gas at the gas station.
Transparent purple alien
Quackers
One of Kev's drawn creations from Viewer Special. It's a giant duck that he named "Quackers" and had torment the UG Gang.
Quackers
Queen Flea
The source that caused Charlie Burgers discomfort in Fleas Help Me.
Queen Flea
Radioactive Pickle Bandit Leader
The leader of the Radioactive Pickle Bandits. Pizza Steve assassinated him in front of his group and took his spot as leader so that he could lead them to save a family that they previously held captive as seen in Uncle Grandpa No. 3.
Radioactive Pickle Bandit Leader
Red Alien
Appeared in Taco Comet. Was broken out of Area 51 imprisonment by Uncle Grandpa, Mr. Gus, and Pizza Steve.
Red Alien
Rick Beastoid
He's a Beastoid who likes to prank and mess around with other people as seen in Beastoid Bros.
Rick Beastoid
Riley
See Riley.
Riley
R.J Sassy Brass the 3rd
Uncle Grandpa's agent who commercialized him in Watermelon Gag before being replace with the Cab Guy.
RJ Sassy Brass the 3rd
Rocking Horse Monster
Rocking Horse Monster is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark.
Rocking horse monster
Rocky
A deceased pet rock who knows Italian Karate and bested Pizza Steve's Italian Karate skills by simply crushing him as seen in Tiger Trails.
Rocky transparent
Sally Smith
See Sally Smith.
Sally Smith
Salvador Beastoid
He's a Beastoid who likes to prank and mess around with other people as seen in Beastoid Bros.
Salvador Beastoid
Scary Nice
See Beary Nice.
Scary nice
Scary Realistic Growling Pitbull
Kid Cousin's (not so scary) pet that appeared in Ballin'. This dog kept track of the basketball game's scores.
Scary Realistic Growling Pitbull
Shadow Demon
A demon that is able to claim any part of ones shadow as seen in The Land of the Lost Shadows.
Shadow Demon
Sharks
An obstacle on the race track in Nacho Cheese.
Sharks
Skeletony
See Skeletony.
Tony Skeletony
Snake
A deceased pet snake who knows Italian Karate and beat up Uncle Grandpa as seen in Tiger Trails.
Snake transparent
Snow Soldiers
Soldiers that served for Foreign Manman in Uncle Grandpa Babies.
Snow Soldiers
Space Cop
Appeared in Prison Break.
Space Cop
Space Guards
Space Guards are aliens from a different dimension that appeared in Space Emperor. At first, they served Melvin because they believed he was a space emperor named Zorth. However, once they learn Emperor Krell was the real space emperor, they serve him instead. These henchmen also serve as guards to protect the planet from outside intrusion.
Space guards
Space Judge
Appeared in Prison Break.
Space Judge
Spaghetti & Meatballs
Spaghetti & Meatballs is a character that only appears in More Uncle Grandpa Shorts. He is Pizza Steve's opponent at the Semi-Annual Italian Karate Tournament. He is cheered on by three green dinosaurs that look like Mr. Gus.
Spaghetti and Meatballs
Spider Monster
Spider Monster is a monster that sprung out of Susie's and Uncle Grandpa's imaginations in the episode Afraid of the Dark. It also appears in the game Reckless Road Trip as one of the minor enemies that are frequently encountered. When killed, it gives out heart power ups.
Spider monster
Spruce Oakley
Spruce Oakley appeared in Are You Talking to Tree? is America's most wanted criminal who committed 347 acts of grand larsony. He posed as a talking tree to trick Uncle Grandpa into stealing things for him, including Mr. Gus and Pizza Steve's hamburgers, merchandise from the mall, and money from the international bank.
Spruce Oakley
Stew
Stew is a man made entirely of soup. He appeared in Uncle Grandpa No. 2 comic "Uncle Grandpa's Final Form", where he stole Uncle Grandpa's title as the most "souper" in Soup Land.
Stew
Taco Wolf
Taco Wolf is from the Night Wolf dimension in Belly Bros. It was on top of the highest mountain and was the first to attack Belly. Luckily for Belly, Uncle Grandpa destroyed the Taco Wolf with his belly powers and turned him into a bunch of regular-sized tacos.
Taco wolf transparent
Tony Pepperoni
Tony Pepperoni is part of Kid Cousin's crew and appears in the episode Ballin'. He is voiced by Adam Devine.
Tony Pepperoni
Topiary Bush Dragon
Topiary Bush Dragon is the main antagonist of the Uncle Grandpa episode "Nickname". It was later destroyed by Eric.
Tree dragon transparent
Vampire Bellhop
The scary bellhop that scared Pizza Steve into leaving as seen in Relaxation Land.
Vampire Bellhop
Werewolf
A Wolf man who attacked Belly Bag in RV Checkup.
Werewolf
Zombees
Zombees were a direct result of Uncle Grandpa locking away bumble bees, brains, and an unknown virus away in a chest full of chicken wings. They were released to the world when Uncle Grandpa opened up the chest to extract the chicken wings. They make an appearnce in Uncle Grandpa No. 2 comic "101 Ways to Blow Up The RV".
Zombee
Zombies
Zombies that appeared in a movie called "Zombie Assassin IV" Pizza Steve was watching as seen in Uncle Zombie.
Uncle Zombie 005

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