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Dexter's Laboratory
Season 2 • Episode 10 • The Koos is Loose
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Dexter's Laboratory Season 2, Episode 10: The Koos is Loose
Dee Dee's imaginary friend comes to life and annoys Dexter. Dexter ends up wishing him away, then he realizes he made a terrible mistake. Watch Dexter's Laboratory Season 2, Episode 10 The Koos is Loose in HD free online. Enjoy high-quality streaming of Dexter's Laboratory Season 2, Episode 10 and share your thoughts in the comments below!
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Episodes
108 episodes
Beard to be Feared
After a fright from Dee Dee, Dexter lays down in the beard growing machine and tries to grow a beard like his hero, Action Hank. Unfortunately, everyone thinks he's a hero.
7 min
Quackor the Fowl
Mandark doesn't know that his pet duck is really Quackor the Fowl, Monkey's rival. Quackor overhears Mandark talking in his sleep about destroying Dexter's lab and tries to do it, unaware that Monkey is Dexter's pet.
7 min
Ant Pants
Dexter prevents Dee Dee from destroying some ants. In order to teach her about ants, Dexter and Dee enter Dexter's ant farm. The ants think Dexter is a criminal and has him fight to the death with a stronger ant.
7 min
Mom and Jerry
Dexter switches his brain with a mouse, and must avoid his mother when she decides to exterminate him. A Parody of Tom and Jerry.
7 min
Chubby Cheese
At the Chubby Cheese pizza restaurant, Dexter wears a Chubby Cheese hat and tries to slow down the Whack The Weasel machine to win a stuffed Monkey doll before Dee Dee does.
7 min
That Crazy Robot
One of Dexter's robots becomes Dee Dee's servant when she removes a wrench that froze him up, but the robot is willing to destroy anyone who is mean to her or scolds her, including Dexter.
7 min
D & DD
When Dexter's friends tire of the complicated traps he sets up as Dungeon Master (he has their character's killed every time), they put Dee Dee in charge for a change of pace.
11 min
Hamhocks and Armlocks
Dexter's father gets challenged to an arm wrestling match against a local champion at a truck stop, when he causes the champion to lose for the first time, but refuses to do so even when he trashes the family car. He finally accepts the challenge when he slams the door in Mom's face. Dee Dee knows he'll get creamed, so Dexter builds him a robotic arm to help him win the match.
11 min
Hunger Strikes
Dexter uses radiation therapy so he can like vegetables, it actually causes him to only eat vegetables, also, the therapy has consequences if Dexter goes too long without them. He turns into a Parody of The Incredible Hulk without vegetables.
7 min
The Koos is Loose
Dee Dee's imaginary friend comes to life and annoys Dexter. Dexter ends up wishing him away, then he realizes he made a terrible mistake.
7 min
Morning Stretch
Dexter oversleeps and still has to finish his homework along with getting ready for school and eating breakfast, so he creates a helmet that expands thirty seconds into thirty minutes, but realizes that slowing down time is more detrimental than helpful. When he gets everything done, the helmet shuts off. But Dee Dee blocks his door causing him to miss the bus. When Dexter asks Dee Dee why, she replies "Snow Day, school's canceled!". Dexter realizes he did all that rushing around for nothing!
7 min
Dee Dee Locks and the Ness Monster
Dee Dee Locks and the Ness Monster—Dexter's mother forces Dexter to read to Dee Dee when she's sick, but she makes up her own story after being bored by Dexter's story (which was actually a science article). The story is completely mixed up and makes no sense. Dexter ends up catching Dee Dee's illness.
7 min
Backfire
Dexter fuses Dee Dee with the family car by accident, causing mayhem. A Parody of Herbie the Love Bug.
7 min
Book 'Em
Dexter accidentally takes a library book without checking it out, so he and Dee Dee try to put it back without being caught.
7 min
Sister's Got a Brand New Bag
Dee Dee's new dance annoys Dexter to no end.
7 min
Shoo, Shoe Gnomes
Dexter calls upon the "shoe gnomes" to repair his boots, but can't rid himself of them afterwards. The only way to get rid of them, according to Dee Dee, is to kick them in the butt. Dexter gets rid of the last one with his boot, but it's damaged again.
7 min
Lab of The Lost
Dexter ends up in the "old part of the lab" where his earliest inventions, long since forgotten, are not too happy to see him. They are mad at him for saying they were his greatest inventions, then moved on to another great invention.
7 min
Labels
Dexter and Dee Dee label everything in the house. When their parents get home, they mistake Dexter for Dee Dee (he had a Dee Dee label on his forehead), but he already blamed Dee Dee for the chaos.
7 min
Game Show
Dexter and Dee Dee compete against each other on a game show. Where Dexter can't seem to win.
7 min
Fantastic Boyage
Dexter tries to inject himself into Dee Dee to find a cure to the common cold, but ends up inside his dog. He believes Dee Dee has been infected with a dog virus. He is then mistaken for the first human virus to infect a dog by the vet.
7 min
Filet of Soul
When Dee Dee refuses to flush their gold fish down the toilet, the ghost of the fish haunts them.
11 min
Golden Diskette
Dee Dee and Dexter win a free pass to Professor Hawk's magic factory after finding the golden diskette.
11 min
Snowdown
Dad encourages Dexter to become the king of snow, as he was in his early days, until someone beated him.
7 min
*Figure Not Included
In an attempt to be popular with his ""friends"", Dexter makes his own Mayor Glory Action Figure.
7 min
Mock 5
In a whole parody of ""Speed Racer"", Dexter and Mandark compete on a race.
7 min
Ewww That's Growth
Dexter can't get into a roller coaster because he's too small so he makes himself taller.
7 min
Nuclear Confusion
Dee Dee steals the nuclear atom that Dexter needs to make his invention work, but she doesn't know that it will explode if Dexter doesn't find it on time.
7 min
Germ Warfare
Everybody except Dexter gets sick, so he makes himself a plastic bubble to get germ protection.
7 min
A Hard Day's Day
It's not a great day for science when Dexter has bad luck due to the position of the stars.
7 min
Road Rash
Mom makes Dexter go outside and ride a bike, thing that turns into a Dexter-Dee Dee chase.
7 min
Ocean Commotion
While at the beach, Dee Dee (who's wearing a mermaid swimsuit) gets captured by a maniac sailor so Dexter must rescue her.
7 min
The Bus Boy
Dexter must go to the back of the school bus to retrieve his pencil, where another kid got lost years ago.
7 min
The Justice Friends: Things that go Bonk in the Night
Krunk stays awake all night watching The Puppet Pals Show Marathon, so his brain starts playing him tricks.
7 min
Ol' McDexter
Dexter is sent to summer camp, in a place far away from civilization.
7 min
Sassy Come Home
While the family is at the woods, Dexter goes searching for the Mighty Bigfoot, if Dee Dee doesn't find him first.
11 min
Photo Finish
Dee Dee photographs Dexter's secret lab.
11 min
Star Check Unconventional
Dexter and two friends go to the Star Check Convention, but certain confusion might send them to a different one.
7 min
Dexter is Dirty
To avoid the bath, Dexter decides to laminate himself.
7 min
Ice Cream Scream
Dexter will do anything to make the ice cream vendor stop to get some ice cream.
7 min
Decode of Honor
Dexter and Dee Dee get their Action Hank and Pony Puff Secret Codes mixed up.
7 min
World's Greatest Mom
Dexter newest creation gives Mom super powers.
7 min
Ultrajerk 2000
Dexter's robot takes over his lab.
7 min
Techno Turtle
Dexter heals a turtle by giving him loads of modern, techno stuff.
7 min
Surprise!
Dexter makes himself invisible to make sure Mom and Dad give him what he wants for his birthday, the Ultimate Mayor Glory Action Figure.
7 min
Got Your Goat
Dexter and Dee Dee go to South America in order to find the chupacabras, an animal that Dexter created.
7 min
Dee Dee Be Deep
Dee Dee, who's not exactly good at singing, gets Dexter's help on getting a better voice, but not the voice Dexter was expecting.
7 min
911
When Dexter's favorite show gets interrupted by an emergency, he searches all town trying to find it and solve so regular broadcast returns.
7 min
Down in the Dumps
Dexter and Dee Dee go to the dumps to retrieve Dee Dee's lost teddy bear.
7 min
Unfortunate Cookie
Dexter and Dee Dee get trapped with a Finger trap.
11 min
The Muffin King
Dexter and Dee Dee must stop Dad from eating Mom's muffins.
11 min
Picture Day
Dexter finds out he's ugly, so he transforms his face to look better for the school photo.
7 min
Now That's a Stretch
Dexter combines himself with bubble gum to become more stretchable.
7 min
Dexter Detention
Dexter is send to detention after a confusion during a test.
7 min
Don't Be a Baby
Dexter and Dee Dee want to become older, but instead they make everyone else a baby.
7 min
Dial M For Monkey: Peltra
A new female villian named Peltra wants Monkey's Coat.
7 min
G.I.R.L. Squad
Dee Dee, LeeLee and MeeMee become crimefighters, but of course they will not actually fight crime.
7 min
Sports a Poppin'
Dad wants to show Dexter the joy of sports.
7 min
Koos a la Goop a Goop
Koosy tells Dee Dee that he is the king of the land of Koos, but when Dee Dee goes there...
7 min
Project Dee Dee
Dee-Dee refuses any kind of help from Dexter on her science project, when Dee-Dee shows Dexter her show-and-tell product, he criticises it heavily and offers his own..contributions
7 min
Topped Off
Surprised of the results coffee causes on Mom and Dad, Dexter and Dee Dee decide to try it themselves.
7 min
Dee Dee's Tail
Dexter uses his science to turn Dee Dee into a horse.
7 min
No Power Trip
Dexter overloads the energy of the laboratory, so he makes numerous tries to reload it.
7 min
Sister Mom
After Dexter did something really bad at school, he gets her mother called, so to not ruin his reputation, he turns Dee Dee into Mom.
11 min
The Laughing
After Dexter gets bitten by a clown, he turns into one every night.
11 min
Dexter's Lab: A Story
On his way home, Dexter gets followed by a labrador, when he teaches him to speak, the dog becomes even more annoying.
7 min
Coupon for Craziness
A confusion at the supermarket makes Dexter go home with a different, yet extremely scientific, family; but who is home with his real family?
7 min
Better Off Wet
Dexter is afraid of taking a dive at the pool because Dad always pushes him.
7 min
Critical Gas
After Dexter eats a giant burrito he believes he's going to die, so he makes a list of everything he must do before that time comes. (Including, make Mom and Dad happy, do dishes, free Robots, make World Peace, end World's hunger, learn to dance, make Dee Dee happy, shut down the Main System... and tell Mom and Dad about the secret laboratory).
7 min
Let's Save the World You Jerk!
Dexter and Mandark must team up in order to save the Earth from a meteor rain.
7 min
Average Joe
After an I.Q. test defines Dexter as ""average"", he decides to live an average life hanging out with an average boy of last name Smith.
7 min
Rushmore Rumble
Dexter and Mandark mechanize the giant figures of Lincoln and Washington from the Mount Rushmore statues and wreak havoc with them.
7 min
A Boy and His Bug
Dexter creates a small bug that eats all the scrap metal caused by Dee Dee's destruction.
7 min
You Vegetabelieve It!
Dexter's untested formula causes all plants in the garden to become dangerous.
7 min
Aye Aye Eyes
After Dexter returns a bunny to a little girl with big round eyes, she starts following Dexter everywhere.
11 min
Dee Dee and the Man
After Dexter ""fires"" Dee Dee, he realizes that his lab needs chaos.
11 min
Old Flame
Dexter travels to the past to meet the caveman that discovered fire.
7 min
Don't Be a Hero
Dexter attempts to make numerous accidents to get super powers.
7 min
My Favorite Martian
Dexter goes to Mars to find alien life forms.
7 min
Paper Route Bout
Dee Dee and the Ninja Clan battle for who delivers the newspapers in the neighborhood.
7 min
The Old Switcharooms
After Dexter and Dee Dee destroy Dad's bowling trophy, they are sent to each other's room.
7 min
Trick or Treehouse
Dee Dee builds a treehouse in the garden and Dexter can't stop wondering what's up there.
7 min
Quiet Riot
Dexter worked all night on his inventions so all he wants is some sleep, but Dee Dee will make sure that that doesn't happen.
7 min
Accent You Hate
Dexter and his friends Lucky and Pierre(¿?) are victims of a bully that hates kids with funny accents.
7 min
Catch of the Day
Numerous factors like getting up early, being the first ones there, fishing clothes and other accesories, will not allow Dexter and his Dad to go on a fishing trip.
7 min
Dad is Disturbed
Constant interruptions by Dexter, Dee Dee and Mom will not let Dad watch his golf game.
7 min
Framed
After Dexter breaks his glasses, he starts a new fashion at school.
7 min
That's Using Your Head
Dexter meets a bum at an appliance store with a strange device on his head.
7 min
DiM
Dexter goes to the appliance store to buy a lightbulb for his lab.
7 min
Just an Old Fashioned Lab Song...
Dexter takes piano classes from a man that looks a lot like Paul Williams.
7 min
Repairanoid
When an electricist comes to repair the house, Dexter discovers that if he repairs the lab it will function perfectly.
7 min
Sdrawkcab
Dexter creates a belt that can have its wearer do everything backwards, only to get in trouble when Dee Dee manages to get control of the time directional switch.
7 min
The Continuum of Cartoon Fools
Dee Dee keeps getting into Dexter's lab even though Dexter keeps throwing her out.
7 min
Sun, Surf, and Science
Mandark tries to impress Dee Dee by getting into a surfing contest.
7 min
Big Bots
Dexter makes Dee Dee a robot for herself, at the same time a volcano is going to burst on an island in the middle of the ocean.
7 min
Gooey Aliens that Control Your Mind
Dexter must save his family after they get possesed by aliens.
7 min
Misplaced in Space
Dee Dee must save Dexter who is a slave in a distant galaxy.
7 min
Dee Dee's Rival
Dee Dee and Lalavava (Mandark's sister), compete on a ballet contest.
7 min
Pslyghtly Psycho
It's Mother's Day and Mom can't take that Dad, Dee Dee and Dexter do all the housework.
7 min
Game for a Game
Dexter and Dee Dee compete in various games chosen by Dexter.
7 min
Blackfoot and Slim
A documentary shows the secret lives of Dexter and Dee Dee, also known as Blackfoot and Slim.
7 min
Trapped with a Vengeance
Dexter stays at school too much, forcing the janitor to stay as well, so he waits for a day in which Dexter has to leave early for an emergency, as he plans his revenge...
7 min
The Parrot Trap
Dexter must stop his mechanical parrot before his imitations reveal the secret of his lab.
7 min
Dexter and Computress Get Mandark!
Dexter and Computress team up in order to shrink Mandark's head.
7 min
The Justice Friends: Pain in the Mouth
Krunk gets a nacho stuck in his tooth and Mayor Glory wants to take it out himself while Valhallens insists on taking Krunk to the dentist.
7 min
Dexter Vs. Santa's Claws
Dexter must prove to Dee Dee that Santa Claus doesn't exist.
7 min
Dyno-Might
When Blue Falcon appears with a destroyed Dynomutt, Dexter decides to build a new one.
11 min
LABretto
The story of how Dexter was born and how he built his lab, in the style of a musical.
11 min
Last But Not Beast
Dexter must save Japan from being destroyed by a monster, but his robot must be controlled by four people to function correctly, so Dexter must tell Dee Dee... and his parents.
24 min