Dexter's Laboratory

The misadventures of a boy genius and his annoying sister.

Cast:Kath Soucie , Jeff Bennett , Christine Cavanaugh , Frank Welker , Tom Kenny , Kat Cressida , Allison Moore , Rob Paulsen , Candi Milo , Eddie Deezen , Mako , Dee Bradley Baker , Kimberly Brooks , Daran Norris , Robert Ridgely , Dom DeLuise , Pamela Adlon , Maurice LaMarche

1Season 1

S1.E1 ∙ Deedeemensional/Dial M for Monkey: Magmanamus/Maternal Combat

Sun, Mar 31, 1996

In "Deedeemensional", Dee Dee time-travels to save Dexter from a monster. In "Magmanamus", Monkey goes up against a lava being that dislikes human-caused noise. In "Maternal Combat", when his mother falls, Dexter creates a robot mom to substitute for her.

2Season 1

S1.E2 ∙ Dexter Dodgeball/Dial M for Monkey: Rasslor/Dexter's Assistant

Sun, Apr 7, 1996

After repeated pummeling in the Gym class dodgeball game, Dexter arrives for class ready for action encased in an Armored Cyber-Sonic Exo-Jock Jumpsuit.

3Season 1

S1.E3 ∙ Dexter's Rival/Dial M for Monkey: Simion/Old Man Dexter

Sun, Apr 14, 1996

Boy genius Dexter wants to stay up and watch the 8 o'clock movie with his family, but his mother says he's not old enough. Using one of his inventions makes himself older, but maybe he's made himself a little too old.

4Season 1

S1.E4 ∙ Double Trouble/Barbequor/Changes

Sun, May 19, 1996

Dexter and his cloning machine overheat when Dee Dee and her friends clone and re-clone themselves for Laboratory fun-time.

5Season 1

S1.E5 ∙ Jurassic Pooch/Dial M for Monkey: Orgon Grindor/Dimwit Dexter

Sun, May 26, 1996

After regenerating a Tyrannosaurus Rex using some puppy-dog DNA, Dexter must recapture the dinosaur-doggie beast when Dee Dee decides to take it for a walk in the park.

6Season 1

S1.E6 ∙ Dee Dee's Room/Dial M for Monkey: Huntor/The Big Sister

Sun, May 5, 1996

In "Dee Dee's Room", Dexter loses something of his and must go into Dee Dee's room to retrieve it. In "Huntor", Monkey finds himself stalked by an alien hunter. In "The Big Sister", Dee Dee eats one of Dexter's experimental cookies and becomes a giant.

7Season 1

S1.E7 ∙ Star Spangled Sidekicks/The Justice Friends: TV Super Pals/Game Over

Wed, Nov 20, 1996

Dexter and Dee Dee audition to be Major Glory's sidekick; The Infragable Krunk wants to watch his favorite TV show; Dexter is trapped inside a video game.

8Season 1

S1.E8 ∙ Babysitter Blues/The Justice Friends: Valhallen's Room/Dream Machine

Wed, Nov 27, 1996

Dexter is in love with his babysitter, Lisa.

9Season 1

S1.E9 ∙ Dollhouse Drama/The Justice Friends: Krunk's Date/The Big Cheese

Wed, Dec 4, 1996

Spying through Dee Dee's bedroom keyhole, Dexter thinks she is plotting against him.

10Season 1

S1.E10 ∙ Way of the Dee Dee/The Justice Friends: Say Uncle Sam/Tribe Called Girl

Wed, Dec 11, 1996

When Dee Dee accuses Dexter of not knowing how to live in the outside world - and only in his lab, he asks her to show him the Dee Dee way of knowledge.

11Season 1

S1.E11 ∙ Spacecase/The Justice Friends: Ratman/Dexter's Debt

Wed, Dec 18, 1996

In "Space Case", Dexter hands off Dee Dee to invading aliens, only to become so overcome with guilt that he decides to save her. In "Ratman", the Justice Friends discover that a vigilante raised by rats has been living in their basement the whole time. In "Dexter's Debt", Dexter owes a huge debt to NASA and must find some way to pay it.

12Season 1

S1.E12 ∙ Dexter's Rival/The Justice Friends: Bee Where?/Mandarker

Wed, Dec 25, 1996

The new kid in school, Mandark, steals Dexter's spotlight and his ego when he find Mandark has a bigger and better laboratory.

13Season 1

S1.E13 ∙ Inflata Dee Dee/The Justice Friends: Can't Nap/Monstory

Wed, Jan 1, 1997

Dee Dee dances into Dexter's Laboratory, puts on Dexter's inflatable suit, floats up above him and taunts him.

0Season 2

S2.E0 ∙ Rude Removal

Tue, Jan 22, 2013

When Dexter creates a new invention to get DeeDee's rudeness under control, her foolish antics cause both her and Dexter to end up in the machine, resulting in them becoming polite, and their rude, evil counterparts being made. Now, the polite Dexter and DeeDee must find a way to rid of the disrespectful clones of themselves before they cause even more trouble.

1Season 2

S2.E1 ∙ Beard to Be Feared/Quackor the Fowl/Ant Pants

Wed, Jul 16, 1997

Dexter decides to emulate his hero, Action Hank, and grow a synthetic beard to make himself more rugged.

2Season 2

S2.E2 ∙ Mom and Jerry/Chubby Cheese/That Crazy Robot

Wed, Jul 23, 1997

When Dexter's brain transplant experiment goes awry, his brain is switched with that of a mouse.

3Season 2

S2.E3 ∙ D & DD/Hamhocks and Armlocks

Wed, Jul 30, 1997

"D & DD" Dee Dee wants to play Monsters & Mazes with Dexter and his friends. Against Dexter's wishes, she is made the game master! Dexter is relegated to a secondary character, but his friends have a great time in Dee Dee's world. "Ham Hocks n' Arm Locks" While on a road trip, car trouble forces Dexter and his family to pull into a truck stop. When Earl, a local arm wrestling champ, gets Dad angry, they decide to have an arm wrestling contest. Knowing Dad has no chance of winning, Dexter comes up with a technological way to make Dad stronger.

4Season 2

S2.E4 ∙ Hunger Strikes/The Koos Is Loose/Morning Stretch

Wed, Aug 6, 1997

Dexter is denied dessert when he doesn't finish his vegetables. He decides to use gamma radiation to alter his tastebuds.

5Season 2

S2.E5 ∙ Dee Dee Locks and the Ness Monster/Backfire/Book 'Em

Wed, Aug 13, 1997

Dexter tries to entertain his ill sister by reading to her out of his science text. Bored by protons and neutrons, Dee Dee uses her imagination to make up a story of her own.

6Season 2

S2.E6 ∙ Sister's Got a Brand New Bag/Shoo, Shoe Gnomes/Lab of the Lost

Wed, Aug 20, 1997

Dee Dee sees Big Daddy Fat doing a new dance on "Groove Train" and has to learn it.

7Season 2

S2.E7 ∙ Labels/Game Show/Fantastic Boyage

Wed, Aug 27, 1997

During a fight with his sister over the chair in front of the TV, Dexter gets the idea to start labeling his things.

8Season 2

S2.E8 ∙ Filet of Soul/Golden Diskette

Wed, Sep 3, 1997

"Filet of Soul": Dexter and Dee Dee are haunted by the ghost of a dead goldfish. "Golden Diskette": Dexter obsessed with finding a golden diskette to get a unprecedented tour of an eccentric inventor's mysterious factory.

9Season 2

S2.E9 ∙ Snowdown/*Figure Not Included/Mock 5

Wed, Sep 10, 1997

Dee Dee keeps pelting Dexter with snowballs.

10Season 2

S2.E10 ∙ Ewww That's Growth/Nuclear Confusion/Germ Warfare

Wed, Sep 17, 1997

When the whole family goes to the carnival, Dexter can't go on a ride because he's too short. Using his lab, he makes himself grow taller, but can't stop.

11Season 2

S2.E11 ∙ A Hard Day's Day/Road Rash/Ocean Commotion

Wed, Sep 24, 1997

In "A HARD DAY'S DAY", every day is a fine day for science until things take a turn for the worse thanks to the position of the stars in the sky. In "ROAD RASH", Dexter's mom forces Dexter to go outside and ride a bike, with Dee Dee challenging him to catch her on her roller blades, resulting in a chase similar to one between Wile E. Coyote and the Road Runner. In "OCEAN COMMOTION", on a visit to the beach, Dee Dee (dressed in a mermaid bathing suit) gets kidnapped by some manic seafarin' sailors and Dexter vows to save her.

12Season 2

S2.E12 ∙ The Bus Boy/The Justice Friends: Things That Go Bonk in the Night/Ol' McDexter

Wed, Oct 1, 1997

When Dexter is harassed by two bullies and forced to go into the back of a school bus chasing his #2 writing implement, he must brave the legend of little Billy Blumberg who disappeared back there years ago.

13Season 2

S2.E13 ∙ Sassy Come Home/Photo Finish

Wed, Oct 8, 1997

While vacationing in the woods with his family, Dexter finds Sasquatch tracks and hopes to photograph the mythical beast.

14Season 2

S2.E14 ∙ Star Check Unconventional/Dexter Is Dirty/Ice Cream Scream

Wed, Oct 15, 1997

Dexter and his friends attend a Star Check convention dressed as their favorite characters; Dexter covers his body in plastic so that he doesn't have to wash his hands before dinner; Dexter creates a device to stop the ice cream van.

15Season 2

S2.E15 ∙ Decode of Honor/World's Greatest Mom/Ultrajerk 2000

Wed, Oct 22, 1997

When Dexter and Dee Dee get their Action Hank and Pony Puffs decoder rings mixed up (respectively), each goes through the other's initiation.

16Season 2

S2.E16 ∙ Techno Turtle/Surprise!/Got Your Goat

Wed, Oct 29, 1997

When Dee Dee rescues a wounded turtle from a hawk's talons, Dexter helps rebuild the little shelled animal into a bionic powerhouse.

17Season 2

S2.E17 ∙ Dee Dee Be Deep/911/Down in the Dumps

Wed, Nov 5, 1997

Dee Dee wants to join the choir, but her bad singing is making it impossible for Dexter to work.; An emergency broadcast signal interrupts Dexter's favorite show; Dee Dee and Dexter go to the city to find Dee Dee's teddy bear.

18Season 2

S2.E18 ∙ Unfortunate Cookie/The Muffin King

Wed, Nov 12, 1997

Dexter and Dee Dee get stuck together by a Chinese Finger Puzzle, they track it to its maker in Chinatown, USA.

19Season 2

S2.E19 ∙ Picture Day/Now That's a Stretch/Dexter Detention

Wed, Nov 19, 1997

It's picture day at school and Dexter must face the truth: he is not photogenic. Using Dee Dee's Teen magazine as a guide for restructuring his physical appearance, Dexter becomes grotesquely handsome.

20Season 2

S2.E20 ∙ Don't Be a Baby/Peltra/G.I.R.L. Squad

Wed, Nov 26, 1997

Being too young to watch an R-rated movie, Dexter tries to make Dee Dee and himself older than Mom and Dad.

21Season 2

S2.E21 ∙ Sports-a-Poppin'/Koos a la Goop a Goop/Project Dee Dee

Wed, Dec 3, 1997

"Dad tries to teach Dexter a sport, like all the other fathers and sons. But Dexter is just horrible at every sport - from baseball to football, soccer to badminton, Dexter stinks!

22Season 2

S2.E22 ∙ Topped Off/Dee Dee's Tail/No Power Trip

Wed, Jan 14, 1998

When Dexter has to have a "parent-principal" meeting at school, the boy genius is distraught. He's never been in trouble so how can he disappoint his parents now?

23Season 2

S2.E23 ∙ Sister Mom/The Laughing

Wed, Jan 21, 1998

Dexter disguises Dee Dee as his mother when he needs to have a parent/teacher conference at school; Dexter turns into a crazy clown after being bitten by one at a party.

24Season 2

S2.E24 ∙ Dexter's Lab: A Story/Coupon for Craziness/Better Off Wet

Wed, Jan 28, 1998

When Dexter takes in a lost Labrador Retriever, he decides to enable the dog to talk.

25Season 2

S2.E25 ∙ Critical Gas/Let's Save the World You Jerk!/Average Joe

Wed, Feb 4, 1998

Dexter wolfs down a burrito and suddenly feels a growing pain inside. After having his computer analyze the pain, Dexter thinks he's going to explode.

26Season 2

S2.E26 ∙ Rushmore Rumble/A Boy and His Bug/You Vegetabelieve It!

Wed, Feb 11, 1998

Mandark and Dexter battle each other with Rushmore Presidents Washington and Lincoln brought to life. / Dexter has a metal eating termite named Timmy as a pet. / Dee Dee uses way too much of Dexter's super growth formula in the backyard and turns the plants into man eating monsters.

27Season 2

S2.E27 ∙ Aye Aye Eyes/Dee Dee and the Man

Wed, Feb 18, 1998

When Dexter returns a little girl's stuffed bunny to her, she falls in love with him. She is soon stalking Dexter. With the help of Dee Dee, Dexter is eventually able to divert the girl's affections toward another little boy.

28Season 2

S2.E28 ∙ Old Flame/Don't Be a Hero/My Favorite Martian

Wed, Feb 25, 1998

Dexter wants to meet the original genius who invented fire and zips back in time. He grabs the unsuspecting and frightened caveman and brings him back to the lab.

29Season 2

S2.E29 ∙ Paper Route Bout/The Old Switcharooms/Trick or Treehouse

Wed, Mar 4, 1998

Dee Dee and Ninja Clan fight for who delivers the newspapers; Dexter and Dee Dee destroy Dad's bowling trophy; Dee Dee builds a tree house in the garden.

30Season 2

S2.E30 ∙ Quiet Riot/Accent You Hate/Catch of the Day

Wed, Mar 11, 1998

When a bully who hates kids with funny accents sets his sights on Dexter, the boy genius has until 3:00 before he receives an after-school beating.

31Season 2

S2.E31 ∙ Dad Is Disturbed/Framed/That's Using Your Head

Wed, Mar 18, 1998

Dad tries to watch a golf game but is constantly interrupted; Dexter gains popularity with broken glasses; Dexter brings home an eccentric man with a lot of electronics on his head.

32Season 2

S2.E32 ∙ DiM/Just an Old Fashioned Lab Song.../Repairanoid

Wed, Mar 25, 1998

While Dexter is working in his lab, one of the light bulbs burns out. Mom takes him to a giant hardware store in an exhausting journey to replace it.

33Season 2

S2.E33 ∙ Sdrawkcab/The Continuum of Cartoon Fools/Sun, Surf, and Science

Wed, Apr 1, 1998

Dexter develops a reverse belt. While wearing the belt to get a snack in the kitchen, Dee Dee sneaks into the lab to play with the belt controls.

34Season 2

S2.E34 ∙ Big Bots/Gooey Aliens That Control Your Mind/Misplaced in Space

Wed, Apr 8, 1998

Dexter builds Dee Dee a huge robot after she tells him he can't. The problem begins when they use their robots to try to save a volcanic island from eruption.

35Season 2

S2.E35 ∙ Dee Dee's Rival/Pslyghtly Psycho/Game for a Game

Wed, Apr 15, 1998

In an episode that mirrors "Dexter's Rival," Dee Dee goes head to head with the new student in her dance class, Olga - Mandark's sister.

36Season 2

S2.E36 ∙ Blackfoot and Slim/Trapped with a Vengeance/The Parrot Trap

Wed, Apr 22, 1998

Dexter and Dee Dee are unknowingly the focus of a "Wild Kingdom" type animal documentary. During Dexter's bathing ritual, he realizes he's being observed, runs, gets tranquilized, and upon awakening discovers he's been tagged.

37Season 2

S2.E37 ∙ Dexter and Computress Get Mandark!/The Justice Friends: Pain in the Mouth/Dexter vs. Santa's Claws

Wed, Apr 29, 1998

Dee Dee uses the lab computer to send her wish list to Santa Claus, but Dexter mocks her because he doesn't believe in the Santa.

38Season 2

S2.E38 ∙ Dyno-Might/LABretto

Wed, May 6, 1998

Through opera we see Dexter's origins leading up to the creation of his laboratory.

39Season 2

S2.E39 ∙ Last But Not Beast

Mon, Jun 15, 1998

In Japan as part of a student exchange program, Dexter gets involved in a battle.

1Season 3

S3.E1 ∙ Streaky Clean/A Dad Cartoon/Sole Brother

Sun, Nov 18, 2001

"Streaky Clean" (9 minutes) When Dexter gets tired of spilling stuff on himself, he invents a washing machine satellite to zap out any spots. But when the satellite is nudged in space to a higher setting, the spots aren't the only things that get removed.

2Season 3

S3.E2 ∙ Mind Over Chatter/A Quakor Cartoon/Momdark

Sun, Nov 18, 2001

"Mind Over Chatter" (9 minutes) Dexter wants to know what Dad has gotten him for his birthday, so he creates an invention so he can read minds. But when it backfires, it's everyone else who can read Dexter's thoughts.

3Season 3

S3.E3 ∙ Copping an Aptitude/A Failed Lab Experiment/The Grand-Daddy of All Inventions

Fri, Nov 30, 2001

"Copping an Attitude" (9 minutes) Dexter goes to college ready to learn only to discover it's party central. But when Dexter fries out by over-studying, he's ready to party and creates the biggest party ever.

4Season 3

S3.E4 ∙ Poppa Wheely/A Mom Cartoon/The Mock Side of the Moon

Fri, Jan 18, 2002

"Poppa Wheelie" - Dexter's school has Career Day, "A Mom Cartoon" - Mom is shopping and suddenly a sale is announced. "Mockside of the Moon" - Dexter discovers that the moon is hallow and monsters are living inside.

5Season 3

S3.E5 ∙ If Memory Serves/A Mandark Cartoon/Tele Trauma

Fri, Feb 22, 2002

Dexter wants to save his memories before he forgets them; a day in the life of Mandark; Dexter finds a way to transmit TV into his brain.

6Season 3

S3.E6 ∙ A Boy Named Sue/Lab on the Run

Fri, Mar 8, 2002

"Boy Named Sue" (11 minutes) Mandark reveals the origin of his anger is from being named Susan and being raised by New Age parents who disallowed science. This comes to a head when he meets Dexter, a science genius, who disregards Susan as not being scientifically equal.

7Season 3

S3.E7 ∙ Dos Boot/A Dee Dee Cartoon/Would You Like That in the Can

Fri, Jun 7, 2002

"Dos Boot" (9 minutes) When Mandark downloads himself into Dexter's computer, Dexter must upload himself in order to combat this virus.

8Season 3

S3.E8 ∙ That Magic Moment/A Silent Cartoon/Opposites Attract

Fri, Jun 14, 2002

"That Magic Moment" (9 minutes) Uncle Magic comes to visit the family and promises to make Dee Dee disappear in a trick. Dexter poo-poos his Uncle's world of illusion and makes Dee Dee disappear via science.

9Season 3

S3.E9 ∙ Comic Relief/A Third Dad Cartoon/Robo Dexo 3000

Fri, Jun 21, 2002

"Comic Relief" (9 minutes) When reading his latest comic book adventure isn't enough for Dexter, he makes a machine so he can create his own adventure. Dexter enters this comic book world and becomes a comic book hero himself-complete with his own supervillain to battle.

10Season 3

S3.E10 ∙ Glove at First Sight/A Mom & Dad Cartoon/Smells Like Victory

Fri, Jun 28, 2002

"Glove At First Sight" (9 minutes) It's a flashback to the 80s as Mom deals with her germaphobia with the slob that will someday be her true love.

11Season 3

S3.E11 ∙ Oh, Brother/Another Dad Cartoon/Bar Exam

Fri, Jul 5, 2002

"Oh Brother" (9 minutes) Dexter is convinced that life would be better if he had an older brother. But he soon learns Dee Dee wasn't really that bad.

12Season 3

S3.E12 ∙ Scare Tactics/A Mom Cartoon/My Dad vs. Your Dad

Fri, Sep 20, 2002

"Scare Tactics" (9 minutes) When Dad won't let Dexter stay up for a late-night scary movie, Dexter sneaks down and watches anyway. Dad sees this and tries to scare Dexter. But then his own trick backfires as the two of them end up being scared by all the spooky sounds in the house.

13Season 3

S3.E13 ∙ Jeepers, Creepers, Where Is Peepers?/Go, Dexter Family, Go!

Fri, Jul 12, 2002

"Jeepers, Creepers, Where is Peepers" (11 minutes) Koosie's dog Peepers is stolen from Koosland. Koosie begs Dexter for help and Dexter must balance his world of science with Koosie's land of imagination.

1Season 4

S4.E1 ∙ Beau Tie/Remember Me?/Over-Labbing

Fri, Nov 22, 2002

"Beau tie" (7 minutes) Dee Dee brings home a boy who's not only cute-he's smart. Soon Dexter and Dee Dee are fighting for his attention.

2Season 4

S4.E2 ∙ Sis-Tem Error/Bad Cable Manners/Dexter's Library

Fri, Apr 25, 2003

Dee Dee accidentally shuts down the lab and must embody all of Dexter's lab so he doesn't find out. Dexter pirates cable for his father. Dexter becomes the stern administrator of his local library.

3Season 4

S4.E3 ∙ The Scrying Game/Monstrosi-Dee Dee/Dad Man Walking

Fri, May 2, 2003

"The Scrying Game" (7 minutes) Dee Dee reads Dexter's fortune and, much to his shock, the things she predicted actually start happening.

4Season 4

S4.E4 ∙ Dexter's Little Dilemma/Faux Chapeau/D2

Fri, May 9, 2003

"Dexter's Little Dilemma" (7 minutes) Dexter has shrunk his parents and put them in a model of the house. But the house isn't complete, so Dexter must scramble about before they discover the truth.

5Season 4

S4.E5 ∙ Head Band/Stuffed Animal House/Used Ink

Fri, May 16, 2003

"Head Band" (7 minutes) Dee Dee has a song stuck in her head-literally. Dexter discovers that Dee Dee has a viral boy band infecting her brain and must come up with a cure before it spreads throughout the world.

6Season 4

S4.E6 ∙ School Girl Crushed/Chess Mom/Father Knows Least

Fri, May 23, 2003

"School Girl Crushed" (7 minutes) Dexter and Mandark attempt to defend their scientific turfs when a new scientific genius come to town. The only thing different is that this genius is a girl!

7Season 4

S4.E7 ∙ Dexter the Barbarian/Tuber Time/Sore Eyes

Fri, May 30, 2003

"Dexter the Barbarian" (7 minutes) Dexter is a barbarian just trying to make his way to the bathroom.

8Season 4

S4.E8 ∙ Babe Sitter/Mountain Mandark/2Geniuses 2Gether 4Ever

Fri, Sep 5, 2003

"Babe Sitter" (7 minutes) Mandark thinks he's going to have a nice romantic evening with his lady love when Dee Dee shows up to babysit him. "Mountain Mandark" (7 minutes) Getting in touch with nature, Mandark becomes Mountain Mandark, throwing of the shackles of technology. "2Geniuses 2Gether 4Ever" (7 minutes) Mandark and Dexter become scientific buddies while Mandark plots to destroy Dexter.

9Season 4

S4.E9 ∙ Height Unseen/Bygone Errors/Folly Calls

Fri, Jun 27, 2003

"Height Unseen" (7 minutes) When everyone but him has had a growth spurt, Dexter decides to try and make himself tall. When that fails, he switches things around, making everyone else short.

10Season 4

S4.E10 ∙ Voice Over/Blonde Leading the Blonde/Comic Stripper

Fri, Jul 25, 2003

"Voice Over" (7 minutes) When Computer gets laryngitis, Dexter must find a replacement voice for her.

11Season 4

S4.E11 ∙ Tee Party/Dexter's Wacky Races

Fri, Aug 1, 2003

"Tee Party" (11 minutes) When Dad makes Dexter be his caddy, Dexter destroys the normally peaceful game of golf.

12Season 4

S4.E12 ∙ The Lab of Tomorrow/Chicken Scratch/Garage Sale

Fri, Aug 15, 2003

"The Lab of Tomorrow" (7 minutes) Dexter narrates as he shows new scientists the great inventions he has planned for a super, future, modern lab.

13Season 4

S4.E13 ∙ They Got Chops/Poetic Injustice/Comedy of Feathers

Fri, Aug 29, 2003

"They Got Chops" (7 minutes) When Dee Dee starts layin' the judo on Dexter, he learns to fight back.