The Jimmy Johnny Power Hour

The Jimmy Johnny Power Hour is a Nickelodeon/Cartoon Network television special set crossover between Jimmy Neutron and Johnny Test universes. The special is a parody of Nickelodeon's Jimmy/Timmy Power Hour. It premiered on Nickelodeon on July 10, 2019, and after that it was released on DVD and Blu-ray on August 20, 2019.

The Jimmy Johnny Power Hour
Johnny Test hasn't been able to do his science project just yet. So, using an Auto-Porter that Susan and Mary had given to him, he goes back to his own room. He wishes he was in the greatest lab in the Universe. Johnny, now in 3D, arrives in Retroville in Jimmy Neutron's lab, where Jimmy Neutron lives. Jimmy accidentally uses Johnny's Auto-Porter, causing him to disappear to Porkbelly. Seeing Goddard, Johnny mistakes him for a game console, which Johnny puts in a video game he was carrying, causing Goddard to transform into the violent Decamator.

Just then, Carl and Sheen drop by and mistake Johnny for Jimmy. After playing with some of the experiments, Johnny bumps into Cindy who falls in love with Johnny. Meanwhile, in Porkbelly, Jimmy, who realizes he has now lost depth, finds himself in Johnny's room and meets Dukey, Susan and Marry. However, in spite of this, Mr. and Ms. Test, Sissy, and several kids in Johnny's school mistake Jimmy for Johnny using nothing but a reality avoidance costume (because Jimmy convinces them to call him Jimmy Neutron, not Johnny Test).

Jimmy inadvertently uses the Auto-Porter in front of Wacko, who comes up with a plan to teleport himself into Susan and Mary's lab and get rid of the kids in Porkbelly. Jimmy combines it with Johnny's handheld video game in order to teleport anywhere. But after successfully tracking Jimmy to Johnny's home, Wacko manages to steal Jimmy's device that would return him to Retroville (because Jimmy wants to go back to Retroville and Johnny wants to go back to Porkbelly), and wants to teleport himself, Jimmy, Dukey, Susan and Marry to the Test sister's instead. Back in Retroville, Johnny and Cindy enjoy hanging out with each other, until Goddard appears. After Johnny blows it off at first, Libby, Carl and Sheen try to stop the giant robot from destroying the town, but every time they fail. Johnny realizes what he has done, but before he can escape, he is eaten by the Decamator. With time running out, Johnny, with Cindy's help, manages to shut down Goddard, and restore him back to normal.

In Susan and Mary's lab, Jimmy comes in contact with Johnny. However, Jimmy refuses to listen to Johnny's plan to stop Wacko from getting rid of the kids in Porkbelly and refuses to help him at all, though at times he always tries his hardest, despite the fact that he is stupid. Wacko then discovers that if he steals Susan and Marry's inventions from the past and then use them to get rid of the kids in Porkbelly and make Dukey, Susan and Mary powerless. Jimmy then gets ready to leave after stealing the Auto-Porter from Wakko. After talking with Johnny, Jimmy has a Brain Blast and comes up with a plan to stop Wakko. Jimmy repairs the lab so that Dukey, Susan and Mary be powerful again to make sure Wakko will be defeated. Jimmy, using Susan and Mary's magic gun, makes Wakko's suit vulnerable to magic and turns Wakko into various scientific equipment, before making him powerless again. Wakko is attacked by Dukey, causing Wakko to run away in fear. Johnny tells his sisters that Jimmy and himself could get back into their own hometowns. The two of them shake hands in the area between both of their worlds.

Back in Porkbelly, Mr. Henry Teacherman reveals that he would be judging the science fair. Dukey note what a good day they've had, before Johnny reminds them that he still hasn't finished his science project yet, until Goddard, who has now lost depth, finally appears out of the wormhole, amazing everybody.

The Jimmy Johnny Power Hour II: When Nerds Collide!
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The Jimmy Johnny Power Hour III: The Jerkinators
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The Jimmy Johnny Power Hour

 * The Adventures of Jimmy Neutron - Boy Genius:
 * The Adventures of Jimmy Neutron - Boy Genius:
 * The Adventures of Jimmy Neutron - Boy Genius:
 * Johnny Test:
 * Johnny Test:
 * Johnny Test:

The Jimmy Johnny Power Hour 2: When Nerds Collide!

 * The Adventures of Jimmy Neutron - Boy Genius:
 * The Adventures of Jimmy Neutron - Boy Genius:
 * Johnny Test:
 * Johnny Test:

The Jimmy Johnny Power Hour 3: The Jerkinators

 * The Adventures of Jimmy Neutron - Boy Genius:
 * The Adventures of Jimmy Neutron - Boy Genius:
 * Johnny Test:
 * Johnny Test:

Transcripts

 * Main articles: Jimmy Johnny Power Hour/Transcript
 * Main articles: Jimmy Johnny Power Hour 2: When Nerds Collide!/Transcript
 * Main articles: Jimmy Johnny Power Hour 3: Jerkinators/Transcript