Young Johnny is gung-ho and full of courage. Johnny's brainiac twin sisters, Susan and Mary, use Johnny as their guinea pig for their outrageous scientific experiments. If they can dream it up, Johnny will do it; as long as his genetically engineered super dog, Dukey, can come along.
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see all options Availability data: JustWatch
- Seasons
- 6
- Episodes aired
- 234
- Latest aired
- S06E51
- Total runtime
- 1d 18h
Timeline when each season aired
- Season 1 September 2005 – July 2006 26 episodes
- Season 2 October 2006 – May 2007 26 episodes
- Season 3 August 2007 – February 2008 26 episodes
- the show was away for 1 year and 7 months
- Season 4 September 2009 – December 2010 52 episodes
- Season 5 June 2011 – August 2012 52 episodes
- Season 6 April 2013 – June 2014 52 episodes
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S05E01 Johnny Goes Nuts
June 13 · 11min find the promo
Show synopsis
Johnny is finally old enough to participate in Porkbelly’s Annual Running of the Squirrels, but he has to get past Lila, who thinks it’s too dangerous, despite performing many dangerous attempts on her son to stop him.
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S05E02 Johnny Daddy Day
June 13 · 11min find the promo
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Johnny, the twins and Lila realize it’s Father’s Day, and they don’t have a gift. They try many disastrous attempts, making Hugh wish they had never remembered!
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S05E03 Johnny Cruise
June 20 · 11min find the promo
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Johnny wins an ocean cruise for him and his family, but it turns to be just a trap by Bling-Bling Boy, who deliberately crashes the ship so he can romantically save Susan.
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S05E04 Rated J for Johnny
June 20 · 11min find the promo
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Johnny tries various schemes to buy an M-rated video game, not knowing what the consequences will be.
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S05E05 Spotless Johnny
June 27 · 11min find the promo
Show synopsis
After Johnny and Dukey track mud in the house, they use a special stain-remover designed by Susan and Mary, but also learn it can make Johnny invisible.
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S05E06 Johnny vs. Bling-Bling: The Ultimate Battle
June 27 · 11min find the promo
Show synopsis
Tired of all of the Johnny vs. Bling Bling battles with no winner, the Test sisters and Bling-Bling's science team make a bet to see who is the final winner of the battles.
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S05E07 Cat Scratch Johnny
July 11 · 11min find the promo
Show synopsis
Johnny and Dukey bring characters in a science-fiction movie to life with Susan and Mary's 3-D glasses, and now the aliens in the movie want to conquer the Earth.
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S05E08 Johnny of the Deep
July 11 · 11min find the promo
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Mary turns Johnny and Dukey into sharks when Bling Bling Boy hypnotizes Susan into falling in love with him.
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S05E09 Johnny Swellville
July 18 · 11min find the promo
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A time-traveling mishap sends Johnny and Dukey back to the 1950s.
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S05E10 Johnny Irresistible
July 18 · 11min find the promo
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Johnny wants to increase his charisma when he becomes jealous of Gil's popularity.
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S05E11 Johnny's Rat Race
July 25 · 11min find the promo
Show synopsis
Johnny uses his sisters' genetically altered rat for a school project, only to have it stolen by a desperate circus owner to save his failing show.
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S05E12 Black & White & Johnny All Over
July 25 · 11min find the promo
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Johnny and Dukey help Mr. Black and Mr. White catch a runaway robot dog before it explodes.
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S05E13 Lawn Gone Johnny
August 1 · 11min find the promo
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Johnny, his friends, and his enemies compete with each other in a lawn mower race.
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S05E14 Johnny's Ultimate Treehouse
August 1 · 11min find the promo
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Johnny "borrows" his sisters' worker drones to build the ultimate treehouse to impress Sissy, but ultimately ends up failing.
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S05E15 Johnny Goes Camping
August 8 · 11min find the promo
Show synopsis
When Johnny is ordered by his school to go camping with his father, he uses his sisters' ray gun to turn Dukey into a monster to scare his father out of it, only to have Bigfoot fall in love with monster Dukey.
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S05E16 Johnny's World Prank Wars I
August 15 · 11min find the promo
Show synopsis
Johnny competes with his family, his friends, and his enemies in a prank war. Error: When Johnny said to Dukey an escape plan, Dukey said look it's Gill.When Mr. Mittens [ aka.Super kitty prakster S.P.K. for short.] said I can't beleve you fell for it meanen it was a prank.
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S05E17 How to Become a John-i Knight
August 22 · 11min find the promo
Show synopsis
Aliens from a meat-themed planet ask Johnny to protect their home world from Dark Vegan who wants to destroy it out of frustration because of his failure to make the perfect toast.
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S05E18 The Return of Johnny Super Smarty Pants
August 29 · 11min find the promo
Show synopsis
The Super Smarty Pants possesses an Eskimo to get to Johnny, where it kicks him away and possesses Johnny, making him the smartest kid in school. Not wanting to be outsmarted, his sisters go to great lengths to de-pants him.
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S05E19 Fangs a Lot Johnny
September 13 · 11min find the promo
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Johnny accidentally turns his sisters into vampires, and has to save Gil from getting bitten by his lovestruck vampire sisters and change them back.
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S05E20 Johnny Testosterone
September 5 · 11min find the promo
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Johnny eats all of the peach yogurt, not knowing that each container is filled with growth serum, and becomes a Hulk monster, causing destruction.
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S05E21 Johnny's Keys to Success
September 19 · 11min find the promo
Show synopsis
Susan and Mary make a key for Johnny that can open any lock in Porkbelly, but people try to steal it for their own benefits.
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S05E22 Johnny's Winter Jacket
September 19 · 11min find the promo
Show synopsis
When Johnny's mom makes him wear a big winter coat, he is teased at school. However, Mr. Black, Mr. White, and the General ask Susan and Mary to make some sort of weapon to destroy aliens if they ever attacked, so they make Johnny's jacket the weapon.
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S05E23 Johnny Two-Face
September 20 · 11min find the promo
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Tired of Johnny's constant lying, Susan and Mary attach a second mouth to him that does nothing but tell the truth.
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S05E24 Johnny Susan, Susan Johnny
September 20 · 11min find the promo
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Susan swaps bodies with Johnny so that she and Mary can get a men-only science award.
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S05E25 Johnny Trick or Treat
October 17 · 11min find the promo
Show synopsis
Johnny spends the night in a haunted house with Dukey and Jillian to win a ton of candy.
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S05E26 Nightmare on Johnny's Street
October 24 · 11min find the promo
Show synopsis
Johnny stays up half the night to watch a six-hour Halloween monster-movie marathon, then steals his sisters' dream machine (thinking it to be an alarm clock) so that he will be able to wake up in time for school the next day; however, he has nightmares during the night which the device brings to life.
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S05E27 My Dinner with Johnny
September 21 · 11min find the promo
Show synopsis
Tired of Johnny's repulsive eating habits, Hugh challenges him to a bet to see if he can go one full meal without complaining about his food or making rude noises.
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S05E28 Johnny Alternative
September 21 · 11min find the promo
Show synopsis
When Johnny and Dukey get tired of the same old Porkbelly, they ask the girls to make it seem more fun. But they accidentally get sent to an alternate universe where they find that everyone (including themselves) is the opposite gender.
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S05E29 Cool Hand Johnny
November 28 · 11min find the promo
Show synopsis
Johnny and Dukey try to escape when they are imprisoned by Wacko in a video game.
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S05E30 Roller Johnny
January 11 · 11min find the promo
Show synopsis
Susan and Mary turn Johnny and Dukey into girls so that they can win the grand prize at a roller derby match, but things quickly get difficult when a blow on the head gives Dukey amnesia, and he thinks that he is a real derby queen.
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S05E31 A Holly Johnny Christmas
December 5 · 11min find the promo
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The Tests try to get Johnny a new toy when it sells out in the local shopping mall.
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S05E32 Johnny's First Annual Snowball
December 12 · 11min find the promo
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Johnny invites everyone to his house for a snowball fight, but forgets to put the word "fight" on the invitation, which misleads everyone into believing it's actually a "Snow Ball" dance.
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S05E33 Lakeside Johnny
January 18 · 11min find the promo
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Johnny heads to summer camp and battles in a boating competition against rival rich-kid campers.
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S05E34 Johnny Germ Fighter
January 25 · 11min find the promo
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Johnny's dad gets fed up with his filthy bathroom and demands Johnny to clean it up but when Johnny uses his sisters' special germ foam and his dad's cleaning products, problems arise as it causes the germs to grow out of control.
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S05E35 Johnny's World Record
February 1 · 11min find the promo
Show synopsis
Johnny is determined to break a world record so he can get into the Frothy Book Of Crazy, Inane & Useless Records.
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S05E36 Mush, Johnny, Mush
February 8 · 11min find the promo
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Johnny, his friends, and his enemies take on a snooty rich boy in a dog sled race.
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S05E37 Johnny's Treasure
February 15 · 11min find the promo
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Johnny, Dukey, and the girls set out to find the treasure of Pie-Eyed Pat when they find his treasure map in the attic.
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S05E38 Extra Credit Johnny
February 22 · 11min find the promo
Show synopsis
Johnny must do some extra credit for school, or he will fail the course and have to make it up in summer school.
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S05E39 Johnny's Left Foot
March 7 · 11min find the promo
Show synopsis
When Johnny breaks his foot in a dangerous stunt, which Hugh and Lila ground him for, his sisters step up to create a robotic one for him.
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S05E40 Johnny vs. The Tickler
March 14 · 11min find the promo
Show synopsis
Angry at Johnny for having Wacko put in jail, his brother The Tickler decides it's time for him to stop Johnny once and for all, so he kidnaps Susan and Mary and takes their lab, forcing Johnny to seek help in unexpected places.
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S05E41 Bugged Out Johnny
March 21 · 11min find the promo
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Johnny and Dukey try to catch bugs, only to come upon a ladybug with a voracious appetite.
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S05E42 Johnny Test's Quest
March 28 · 11min find the promo
Show synopsis
Bling-Bling tries to get Susan once again, but his henchmen soon rebel against him by tying him up with Susan.
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S05E43 Johnny-O's
April 4 · 11min find the promo
Show synopsis
Sick of cheap cereal prizes that don't work, Johnny decides to make himself a new breakfast cereal. But everything goes haywire when Johnny decides to put in real ray guns made by his twin sisters, and the entire town of Porkbelly becomes a city of chaos and destruction of what anyone chooses to destroy.
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S05E44 It's Du-Kay Johnny
April 11 · 11min find the promo
Show synopsis
When Dukey's DNA begins to degrade, reverting him into a normal dog, the girls attempt to upgrade it, but their upgrade goes overboard, turning Dukey into a rich, snooty dog.
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S05E45 Magic Johnny
June 6 · 11min find the promo
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Johnny tries to prove to Sissy that he can do magic so he gets his sisters to help him.
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S05E46 Dolly Johnny
June 13 · 11min find the promo
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Johnny disagrees to help the girls test experiments so they create a special doll that can control Johnny but Johnny seeks revenge and creates special dolls that can control the girls.
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S05E47 Johnny McCool
June 20 · 11min find the promo
Show synopsis
Johnny becomes Speed McCool's new stunt man.
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S05E48 It's an Invasion, Johnny
June 27 · 11min find the promo
Show synopsis
Black and White get into trouble in outer space and the kids must save them.
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S05E49 It's All Relative, Johnny
July 25 · 11min find the promo
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Johnny and Dukey go back in time to meet Johnny's ancestor in order to write a report about him.
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S05E50 Johnny Rich
August 1 · 11min find the promo
Show synopsis
The Tests become rich when they sell one of Susan and Mary's inventions, but Bling Bling is jealous and goes to war with them.
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S05E51 Johnny X... Again? (JX9)
August 8 · 11min find the promo
Show synopsis
Johnny visits Reptoslicer and his family, but Reptoslicer then tries to eat Porkbelly.
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S05E52 Green Johnny
August 15 · 11min find the promo
Show synopsis
When Earth Day approaches, Johnny is visited by three ghosts.