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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S01E01 Johnny to the Center of the Earth
September 17 · 11min find the promo
Show synopsis
Things have been mysteriously disappearing underground, making Johnny and Dukey believe that the people behind this are "mole people". When Johnny accidentally loses his dad's new camera, he must journey to the center of the earth to retrieve it before dinnertime, or he will be grounded.
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S01E02 Johnny X
September 17 · 11min find the promo
Show synopsis
Susan and Mary give Gil a piece of their special love "bubble gum", but by accident, it makes him transform. In order to save Gil and the others in pork belly, they have to give Johnny and Dukey some cool super powers.
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S01E03 Johnny vs. Bling-Bling Boy
September 24 · 11min find the promo
Show synopsis
Bling-Bling Boy has stolen a device that turns things into gold and Johnny must get it back before dinnertime.
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S01E04 Johnny Impossible
September 24 · 11min find the promo
Show synopsis
Johnny tries to get his baseball back from an old man before the baseball game starts.
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S01E05 Johnny Test: Party Monster
October 1 · 11min find the promo
Show synopsis
Susan and Mary are having a party and use a device on Johnny in order to make him look good so all the girls at the party will love him, but Johnny turns into a monster.
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S01E06 Johnny Test: Extreme Crime Stopper
October 1 · 11min find the promo
Show synopsis
The Extreme Teen Team are on the loose and it's up to Johnny to bring them down.
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S01E07 Deep Sea Johnny
October 8 · 11min find the promo
Show synopsis
Johnny uses an invention to breathe underwater, yet sharks and electric eels begin to walk on land and wreak havoc to the beach.
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S01E08 Johnny and the Amazing Turbo Action Backpack
October 8 · 11min find the promo
Show synopsis
Bling-Bling Boy steals a backpack and Johnny must retrieve it so Susan and Mary can show it off at the school science fair.
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S01E09 Johnny and the Ice Pigs
October 29 · 11min find the promo
Show synopsis
Johnny goes back in time to ask Thomas Edison for a hockey invention and then to gather all of the vicious and ruthless "legends" he could find, in order to form a hockey team which will help the Ice Pigs win a game.
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S01E10 Johnny’s House of Horrors
October 29 · 11min find the promo
Show synopsis
Johnny fills the house with some of Hugh's favorite things listed in his notebook. However, Johnny learns that the book was also full of Hugh's least favorite things (most of them scary.) To make matters worse, Lila's boss is coming over for dinner that night.
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S01E11 Johnny’s Super Smartypants
November 5 · 11min find the promo
Show synopsis
Johnny wears super smarty pants in order to win the love of a genius girl, Janet Nelson Jr. But later, the pants get a mind of their own.
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S01E12 Take Your Johnny to Work Day
November 5 · 11min find the promo
Show synopsis
Johnny sneaks into Lila's car along with Susan and Mary on Take Your Daughter to Work Day, thinking that it's unfair that girls don't have to go to school on this day, but boys do. When the kids get to Lila's workplace, they sneak into a lab and accidentally release a missile.
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S01E13 Johnny and the Mega Roboticles
November 12 · 11min find the promo
Show synopsis
Johnny brings a toy, Nasteria, to life. But the toy decides to destroy Porkbelly. Now Johnny needs to stop the evil action figure with a toy force, led by Nasteria's arch enemy, Mega Roboticle.
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S01E14 Johnny Gets Mooned
November 12 · 11min find the promo
Show synopsis
Johnny steals a rocket his sisters made to travel to the moon so he can write his report. Unexpectedly, he battles some moon monsters and rescues Canadian astronauts.
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S01E15 Johnny Hollywood
November 19 · 11min find the promo
Show synopsis
Johnny uses a gadget to travel into a movie, The Quickest and the Monkiest. But what happens when the gadget gets stuck and the movie has a bad ending?
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S01E16 Johnny's Turbo Time Rewinder
November 19 · 11min find the promo
Show synopsis
Johnny's sisters invent a time rewinder that can go back up to 5 minutes and they use it to get Johnny in trouble. Infuriated, he tries multiple times to steal this, but he fails; eventually, he gets a similar one from Bling-Bling Boy.
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S01E17 Return of Johnny X
November 26 · 11min find the promo
Show synopsis
Johnny becomes Johnny X again in order to take down Bling-Bling's latest evil invention, Repto-Slicer.
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S01E18 Sonic Johnny
November 26 · 11min find the promo
Show synopsis
Johnny and Dukey try Susan and Mary's ultimate scooter and are wanted in the future.
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S01E19 Dog Days of Johnny
February 11 · 11min find the promo
Show synopsis
Susan and Mary put a device on Dukey, making him respond to their every command. Now Johnny must stop Susan and Mary, and get his best friend back.
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S01E20 Johnny's Pink Plague
February 11 · 11min find the promo
Show synopsis
Johnny uses a device to free everyone of zits.
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S01E21 Johnny's Extreme Game Controller
February 18 · 11min find the promo
Show synopsis
Johnny uses his game controller to control people, but Hugh gets his hands on it and begins affecting Johnny in the process.
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S01E22 Li'l Johnny
February 18 · 11min find the promo
Show synopsis
Johnny accidentally shrinks himself and Dukey into a sub-atomic universe while shrinking his toys. Unexpectedly, its nature turns against him.
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S01E23 Johnny vs. Brain Freezer
July 22 · 11min find the promo
Show synopsis
A kid at Susan and Mary's school becomes a villain named Brain Freezer. Now Johnny must stop this villain and unfreeze everyone he froze.
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S01E24 Johnny's Big Snow Job
July 22 · 11min find the promo
Show synopsis
Johnny uses a device in Susan and Mary's lab to make it snow outside.
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S01E25 Johnny Dodgeball
July 29 · 11min find the promo
Show synopsis
Johnny uses a bionic arm to magnify his arm strength to beat Sissy at dodge ball. However, it breaks after being exposed to cereal.
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S01E26 Johnny and the Attack of the Monster Truck
July 29 · 11min find the promo
Show synopsis
Eugene brings a living monster truck to the Test house, and it began to be enraged after Eugene kicked it because it didn't win Susan's heart. Now the truck wants to destroy the entire monster truck species. It's up to Johnny to figure out how to stop it.