Season 4

01 Johnny's New Baby Sisters Episode 110th September 2009 Susan and Mary purposely turn themselves into babies while the parents are out, and Johnny has to keep them safe from the irresponsible babysitter Gil; this interferes with a party he and Dukey had been planning. 02 Porta Johnny Episode 210th September 2009 Johnny tricks his sisters into letting him have teleporting powers. Susan and Mary mess with the powers to get revenge. Later the twins accidentally get them caught in a middle of an art robbery. 03 Join the Johnny Scouts Episode 317th September 2009 After Johnny lands his bike into a garbage truck, he becomes a Lady Bird Scout and tries to sell 1,000 boxes of cookies to get a new one. Little does he know, Sissy wants the bike as well, but for a better reason. 04 Johnny BC Episode 417th September 2009 Johnny goes back in time in order to get a sloth bone for the twins, but when he returns he becomes a caveman, interfering with his grounding from selling Hugh's personal items. 05 Runaway Johnny Episode 524th September 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. 06 Johnny on the Spot Episode 624th September 2009 Johnny steals a portable black hole, which later creates an early apocalypse. 07 Dark Johnny Episode 71st October 2009 Johnny joins forces with Dark Vegan to get him back to his home planet. 08 No Homework for Johnny Episode 81st October 2009 Susan and Mary build Johnny a robot in order to help him do his homework, but the robot ends up stealing things for Johnny. 09 Papa Johnny Episode 98th October 2009 Susan and Mary switch Johnny and Hugh's brains after the two make a bet that involves taking on each other's lives. 10 The Johnnyminster Dog Show Episode 108th October 2009 Johnny and Dukey try to get in a dog show which only allows perfectly groomed and trained dogs. 11 Dukey Jekyll and Johnny Hyde Episode 1115th October 2009 Dukey drinks a liquid which makes him turn into a monster. To make matters worse, a dog catcher (and later Mr. Black and Mr. White) are after him. 12 Johnny's Trophy Case Episode 1215th October 2009 Johnny wants to get a trophy to put in his trophy case. Susan and Mary get obsessed with winning, so the three of them enter The Pork Belly River Jumpoff to win 1 million dollars and a trophy. 13 Johnny's Amazing Cookie Company Episode 1326th November 2009 Susan and Mary make fortune cookies that come true, and Johnny sells them with the typical drastic results. 14 Johnny's Big Dumb Sisters Episode 1426th November 2009 The twins' latest invention accidentally makes them dumb thanks to Johnny right before their scholarship interview. 15 My Johnny Guard Episode 153rd December 2009 Johnny gets hired to stop Bling-bling from kissing Susan, but Johnny turns on the sisters once Bling-Bling bribes him. 16 Tom and Johnny Episode 163rd December 2009 Johnny turns into a mouse for Susan and Mary, but when Mr. Mittens comes, things get chaotic. This episode is a parody of Tom and Jerry. 17 The Quantum of Johnny Episode 1710th December 2009 Johnny tries to get invited to a party to stop a villain. NOTE: Susan and Mary don't appear in this episode. 18 Johnny Get Yer Gum Episode 1810th December 2009 Mr. Whacko invents a new helium gum that lifts kids into the sky, and Johnny must save them. 19 Old School Johnny Episode 197th January 2010 Johnny travels to 1845 when school was easier, but he gets stuck there because the power supplier to the Turbo Time Tea house hasn't been invented yet. The sisters and Johnny try to find outdated technology to power the tea house. 20 Johnny Degrees Below Zero Episode 207th January 2010 Johnny creates a magnetic force field on the Earth which makes Porkbelly the new north pole. 21 Johnny Johnny Episode 214th February 2010 Johnny and Dukey get framed for stuff that Johnny and Dukey look alike robots (which Mr. Black and Mr. White made) do around Porkbelly. 22 Johnny Double Coupons Episode 224th February 2010 Johnny keeps attempting to ride down Suicide hill, but Susan and Mary keep redeeming Johnny's coupons. 23 X-Ray Johnny Episode 2318th February 2010 Johnny gets X-Ray goggles. 24 The Destruction of Johnny X Episode 2418th February 2010 Johnny and Dukey decide to remain in super hero mode permanently but find being a superhero is harder than they think. 25 iJohnny Episode 2525th February 2010 The twins upgrade Johnny's new cell phone. Later the phone becomes too intelligent and begins hacking government space missiles. 26 Johnny vs. The Mummy Episode 2625th February 2010 Johnny goes on a trip to the museum and brings the things to life, including a mummy. 27 Johnny Grow Your Own Monster Episode 2710th May 2010 Johnny's mail order foam monster becomes a real monster once the twins swap the water with their bottle of "side effects". 28 Who's Johnny Episode 2817th May 2010 When Sissy considers Johnny too gross to help her in a science project, he begs Susan and Mary to change his personality. 29 Princess Johnny Episode 2924th May 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. 30 99 Deeds of Johnny Test Episode 305th July 2010 After getting his 99th detention, Johnny learns he must perform 99 good deeds or he will be sent to military school. 31 Johnny's Amazing Race Episode 3112th July 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. 32 Johnny Test in 3D Episode 3219th July 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. 33 Guess Who's Coming to Johnny's for Dinner Episode 3326th July 2010 Mr. Black moves in with the Tests after he embarrasses Mr. White at the dance contest auditions. 34 Johnny's New BFF Episode 342nd August 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. 35 Johnny vs. Bling Bling IV Episode 359th August 2010 Johnny once again has to protect Susan from Bling Bling Boy who is determined to have her as his valentine. 36 Johnny's Big Sister Smackdown Episode 3616th August 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. 37 Sunshine Malibu Johnny Episode 3723rd August 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. 38 Johnnyicle Episode 3830th August 2010 Johnny and Dukey try to help Brain Freezer get a girlfriend. 39 King Johnny Episode 396th September 2010 Johnny becomes obsessed with domination after Susan and Mary bring his chess pieces to life. 40 Johnny Re-Animated Episode 4013th September 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. 41 Johnny Cakes Episode 4120th September 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. 42 Johnny Tube Episode 4227th September 2010 Johnny wants to become a internet sensation. 43 Sleepover at Johnny's Episode 434th October 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. 44 Johnny's Got a Wart! Episode 4411th October 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. 45 Johnny's Royal Flush Episode 4518th October 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. 46 Johnny Test's Day Off Episode 4625th October 2010 Johnny ditches school with a relentless truant officer in hot pursuit. 47 Johnny & Dark Vegan's Battle Brawl Mania Episode 471st November 2010 Dark Vegan once again tries to destroy Johnny, who is trying to cheer up lonely Repto-Slicer. 48 A Scholarship for Johnny Episode 488th November 2010 Hugh wants to train Johnny to be good at sports so that he could get a sports scholarship to college. 49 Johnny Boat Racing Episode 4915th November 2010 Johnny, his friends, and his enemies all compete in a boat race against an arrogant rowing team. 50 Johnny Lock Down Episode 5022nd November 2010 Johnny is determined to get a flytrap plant from his sisters for his school's science fair. 51 Good Ol' Johnny Test Episode 5129th November 2010 Johnny is in charge of the school play about recycling while Susan and Mary create a garbage-eating monster. 52 Johnny X Strikes Back Again Episode 5230th December 2010 The general takes away the lab, and than builds agent cyborgs. They charge up Johnny X and their friends to stop them!