The BEST episodes of Johnny Test season 4

Every episode of Johnny Test season 4, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Johnny Test season 4!

Crafty 11-year-old Johnny Test and his genetically modified talking dog go on high-octane adventures to save his family (and the world) from disaster.

Last Updated: 9/16/2026Network: Cartoon NetworkStatus: Ended
Runaway Johnny
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#1 - Runaway Johnny

Season 4 - Episode 5 - Aired 9/24/2009

Johnny and Dukey run away when Johnny's parents say he's old enough to do chores but not old enough to watch PG-13 movies.

King Johnny
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#2 - King Johnny

Season 4 - Episode 39 - Aired 9/6/2010

Johnny becomes obsessed with domination after Susan and Mary bring his chess pieces to life.

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#3 - Good Ol' Johnny Test

Season 4 - Episode 51 - Aired 11/29/2010

Johnny is in charge of the school play about recycling while Susan and Mary create a garbage-eating monster.

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#4 - Johnny Lock Down

Season 4 - Episode 50 - Aired 11/15/2010

Johnny is determined to get a flytrap plant from his sisters for his school's science fair.

Johnny Boat Racing
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#5 - Johnny Boat Racing

Season 4 - Episode 49 - Aired 11/15/2010

Johnny, his friends, and his enemies all compete in a boat race against an arrogant rowing team.

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#6 - A Scholarship for Johnny

Season 4 - Episode 48 - Aired 11/1/2010

Hugh wants to train Johnny to be good at sports so that he could get a sports scholarship to college.

Johnny & Dark Vegan's Battle Brawl Mania
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#7 - Johnny & Dark Vegan's Battle Brawl Mania

Season 4 - Episode 47 - Aired 11/1/2010

Dark Vegan once again tries to destroy Johnny, who is trying to cheer up lonely Repto-Slicer.

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#8 - Johnny Test's Day Off

Season 4 - Episode 46 - Aired 10/18/2010

Johnny ditches school with a relentless truant officer in hot pursuit.

Johnny's Royal Flush
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#9 - Johnny's Royal Flush

Season 4 - Episode 45 - Aired 10/18/2010

When Susan and Mary turns Johnny into a fish as part of one of their experiments, Hugh flushes him down the toilet by mistake where he ends up in the sewer, and he has to swim for his life when he runs into an alligator.

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#10 - Johnny's Got a Wart!

Season 4 - Episode 44 - Aired 10/4/2010

Johnny gets a wart, and when his sisters try to get rid of it, it gives the wart intelligence and seems to make Johnny's life better, but he tries to take over his body as he gets more powerful.

Sleepover at Johnny's
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#11 - Sleepover at Johnny's

Season 4 - Episode 43 - Aired 10/4/2010

Johnny is dragged into Susan and Mary's plan to get Gil to be in a sleep-over, but Bling-Bling Boy and Dark Vegan's daughter Jillian become involved as well, with the usual chaos ensuing.

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#12 - Johnny Tube

Season 4 - Episode 42 - Aired 9/20/2010

Johnny wants to become a internet sensation.

Johnny Cakes
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#13 - Johnny Cakes

Season 4 - Episode 41 - Aired 9/20/2010

It's Lila's birthday and the family spends the morning to make her birthday a success. Johnny struggles to make her breakfast, Hugh tries to figure out a good but inexpensive gift for her, and the twins keep trap Lila in her bedroom until Hugh and Johnny are ready.

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#14 - Johnny Re-Animated

Season 4 - Episode 40 - Aired 9/6/2010

Johnny uses one of his sisters' inventions to bring two cartoon characters to the real world in order to scare Sissy out of the house, but the characters mistake Porkbelly for a zombie world and try to destroy it.

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#15 - Johnny X Strikes Back Again

Season 4 - Episode 52 - Aired 11/29/2010

The general takes away the lab, and than builds agent cyborgs. They charge up Johnny X and their friends to stop them!

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#16 - Johnnyicle

Season 4 - Episode 38 - Aired 8/23/2010

Johnny and Dukey try to help Brain Freezer get a girlfriend.

Sunshine Malibu Johnny
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#17 - Sunshine Malibu Johnny

Season 4 - Episode 37 - Aired 8/23/2010

Johnny goes to the beach to surf, but there are no waves, so Susan and Mary build a wave making machine and special surfboard for him.

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#18 - Johnny's Big Sister Smackdown

Season 4 - Episode 36 - Aired 8/9/2010

Susan and Mary both want Gil to go on a date with them, so they put up a wrestling match using rough guts (Susan uses Johnny's while Mary uses a lion's), but it leads to destructive results.

Johnny vs. Bling Bling IV
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#19 - Johnny vs. Bling Bling IV

Season 4 - Episode 35 - Aired 8/9/2010

Johnny once again has to protect Susan from Bling Bling Boy who is determined to have her as his valentine.

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#20 - Johnny's New BFF

Season 4 - Episode 34 - Aired 7/26/2010

Johnny's parents keep setting Johnny up with new friends. When those don't work out, Johnny reveals Dukey's intelligence. Later, Dukey spends more time helping Johnny's parents instead of playing with Johnny.

Guess Who's Coming to Johnny's for Dinner
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#21 - Guess Who's Coming to Johnny's for Dinner

Season 4 - Episode 33 - Aired 7/26/2010

Mr. Black moves in with the Tests after he embarrasses Mr. White at the dance contest auditions.

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#22 - Johnny Test in 3D

Season 4 - Episode 32 - Aired 7/12/2010

While the tests go on vacation, Johnny and Dukey try to get back into their hotel room and avoid the hotel manager that doesn't allow pets.

Johnny's Amazing Race
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#23 - Johnny's Amazing Race

Season 4 - Episode 31 - Aired 7/12/2010

Johnny and Dukey challenge his sisters, their friends, and their enemies to a survival challenge in which the winning team gets hundreds of dollars in gift certificates.

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#24 - 99 Deeds of Johnny Test

Season 4 - Episode 30 - Aired 5/24/2010

After getting his 99th detention, Johnny learns he must perform 99 good deeds or he will be sent to military school.

Princess Johnny
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#25 - Princess Johnny

Season 4 - Episode 29 - Aired 5/24/2010

Johnny poses as a princess in order to prevent a war. Meanwhile, Susan and Mary decide that they would like to act like normal girls.