6.1/1036 votes#1 - Johnny's New Baby Sisters
Season 4 Episode 1 - Aired 11/9/2009
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.
Director: Paul Riley
Writer: Scott Fellows
6.4/1032 votes#2 - Porta Johnny
Season 4 Episode 2 - Aired 11/10/2009
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.
Director: Paul Riley
Writer: Scott Fellows
6.3/1029 votes#3 - Join the Johnny Scouts
Season 4 Episode 3 - Aired 11/11/2009
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.
Director: Paul Riley
Writer: Scott Fellows
6.3/1030 votes#4 - Johnny BC
Season 4 Episode 4 - Aired 11/12/2009
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.
Director: Paul Riley
Writer: Scott Fellows
6.3/1032 votes#5 - Runaway Johnny
Season 4 Episode 5 - Aired 11/12/2009
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.
Director: Paul Riley
Writer: Scott Fellows
6.3/1027 votes#6 - Johnny on the Spot
Season 4 Episode 6 - Aired 11/12/2009
Johnny steals a portable black hole, which later creates an early apocalypse.
Director: Paul Riley
Writer: Scott Fellows
6.2/1027 votes#7 - Dark Johnny
Season 4 Episode 7 - Aired 10/1/2009
Johnny joins forces with Dark Vegan to get him back to his home planet.
Director: Paul Riley
Writer: Scott Fellows
6.3/1025 votes#8 - No Homework for Johnny
Season 4 Episode 8 - Aired 10/1/2009
Susan and Mary build Johnny a robot in order to help him do his homework, but the robot ends up stealing things for Johnny.
Director: Paul Riley
Writer: Scott Fellows
5.6/1026 votes#9 - Papa Johnny
Season 4 Episode 9 - Aired 10/8/2009
Susan and Mary switch Johnny and Hugh's brains after the two make a bet that involves taking on each other's lives.
Director: Paul Riley
Writer: Scott Fellows
5.9/1026 votes#10 - The Johnnyminster Dog Show
Season 4 Episode 10 - Aired 10/8/2009
Johnny and Dukey try to get in a dog show which only allows perfectly groomed and trained dogs.
Director: Paul Riley
Writer: Scott Fellows
5.5/1027 votes#11 - Dukey Jekyll and Johnny Hyde
Season 4 Episode 11 - Aired 10/15/2009
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.
Director: Paul Riley
Writer: Scott Fellows
6.3/1028 votes#12 - Johnny's Trophy Case
Season 4 Episode 12 - Aired 10/15/2009
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.
Director: Paul Riley
Writer: Scott Fellows
6.3/1027 votes#13 - Johnny's Amazing Cookie Company
Season 4 Episode 13 - Aired 11/26/2009
Susan and Mary make fortune cookies that come true, and Johnny sells them with the typical drastic results.
Director: Paul Riley
Writer: Mark Fellows
5.9/1027 votes#14 - Johnny's Big Dumb Sisters
Season 4 Episode 14 - Aired 11/26/2009
The twins' latest invention accidentally makes them dumb thanks to Johnny right before their scholarship interview.
Director: Paul Riley
Writer: Lazar Saric
5.2/1030 votes#15 - My Johnny Guard
Season 4 Episode 15 - Aired 12/3/2009
Johnny gets hired to stop Bling-bling from kissing Susan, but Johnny turns on the sisters once Bling-Bling bribes him.
Director: Paul Riley
Writer: Brad Birch
6.5/1029 votes#16 - Tom and Johnny
Season 4 Episode 16 - Aired 12/3/2009
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.
Director: Paul Riley
Writer: Scott Fellows
5.6/1026 votes#17 - The Quantum of Johnny
Season 4 Episode 17 - Aired 12/10/2009
Johnny tries to get invited to a party to stop a villain. NOTE: Susan and Mary don't appear in this episode.
Director: Paul Riley
Writer: Scott Fellows
6.0/1031 votes#18 - Johnny Get Yer Gum
Season 4 Episode 18 - Aired 12/10/2009
Mr. Whacko invents a new helium gum that lifts kids into the sky, and Johnny must save them.
Director: Paul Riley
Writer: Rick Groel
6.2/1026 votes#19 - Old School Johnny
Season 4 Episode 19 - Aired 1/7/2010
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.
Director: Paul Riley
Writer: Scott Fellows
6.2/1027 votes#20 - Johnny Degrees Below Zero
Season 4 Episode 20 - Aired 1/7/2010
Johnny creates a magnetic force field on the Earth which makes Porkbelly the new north pole.
Director: Paul Riley
Writer: Keith Wagner
6.5/1027 votes#21 - Johnny Johnny
Season 4 Episode 21 - Aired 2/4/2010
Johnny and Dukey get framed for stuff that Johnny and Dukey look alike robots (which Mr. Black and Mr. White made) do around Porkbelly.
Director: Paul Riley
Writer: Mark Fellows
6.3/1027 votes#22 - Johnny Double Coupons
Season 4 Episode 22 - Aired 2/4/2010
Johnny keeps attempting to ride down Suicide hill, but Susan and Mary keep redeeming Johnny's coupons.
Director: Paul Riley
Writer: Scott Fellows
4.8/1043 votes#23 - X-Ray Johnny
Season 4 Episode 23 - Aired 2/25/2010
Johnny gets X-Ray goggles.
Director: Paul Riley
Writer: Ron Holsey
6.2/1030 votes#24 - The Destruction of Johnny X
Season 4 Episode 24 - Aired 2/25/2010
Johnny and Dukey decide to remain in super hero mode permanently but find being a superhero is harder than they think.
Director: Paul Riley
Writer: Scott Fellows
5.9/1027 votes#25 - iJohnny
Season 4 Episode 25 - Aired 3/2/2010
The twins upgrade Johnny's new cell phone. Later the phone becomes too intelligent and begins hacking government space missiles.
Director: Paul Riley
Writer: Scott Fellows
The Best Episodes of Johnny Test Season 4
Every episode of Johnny Test Season 4 ranked from best to worst. Discover the Best Episodes of Johnny Test Season 4!
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...
Genres:AnimationComedyKids
Season 4 Ratings Summary
"Johnny's New Baby Sisters" is the best rated episode of "Johnny Test" season 4. It scored 6.1/10 based on 36 votes. Directed by Paul Riley and written by Scott Fellows, it aired on 11/9/2009. This episode is rated 0.3 points higher than the second-best, "Porta Johnny".