Jenny is unwittingly programmed for evil against her will by a spoiled child named Todd Sweeney, who uses her to ruin the holidays for all of Tremorton. When she returns to normal, she discovers that the entire town has turned against her, and nobody believes her pleas of innocence, except for the one person that worships her like a goddess - Sheldon. Todd, however, still intends to use her to ruin the year's biggest holiday—Christmas.

When Tuck takes a look into Dr. Wakeman's "Future Scope" and sees a vision which leads him to believe that Jenny will kill Brad, he takes all costs to stop Brad from leaving for a drive-in movie showing.

Dr. Wakeman is coming to Tremorton High to speak at a special science assembly about Jenny. Fearing humiliation, Jenny tries to prevent her mother from talking at the assembly.

Brad gets a chance to join the Skyway Patrol in hopes that he can help Jenny in her duties. However, he soon finds himself stuck with nothing but paperwork and paper cuts at his new job.

After being lectured about planned obsolescence by Brad, and later finding herself unable to defeat the energy vampire Gigawatt, Jenny fears being rendered an obsolete robot. Determined to beat Gigawatt, she soon tries to "upgrade" herself to make up for her weaknesses against Gigawatt.

Jenny's new boyfriend, a male robot named Kenny built by Dr. Wakeman's rival Dr. Mogg (who copies many of Dr. Wakeman's inventions while adding distinctive twists), seems to be the perfect match for her at first; however, Kenny soon starts to display oddly dog-like characteristics. Meanwhile, the new couple attracts Sheldon's jealousy.

The Teen Team has come to Earth, and they are quite impressed with Jenny's abilities. Jenny seems more than excited to join, but finds herself ignoring her other friends in favor of a group of heroes that are mostly prejudiced against "normal people".

Jenny has managed to get herself invited to Brit and Tiff's slumber party, and, as usual, Jenny's naiveness leads her to cause mischief all over town to impress the Crusts. Dr. Wakeman must stop Jenny before Skyway Patrol can catch up to her daughter.

Commander Smytus has actually succeeded in assimilating Jenny into the Cluster, and has turned her into a massive metal monster. Having been awakened due to Jenny being in crisis, the rest of the XJ line have come to save their captive sister.

Jenny takes the Silver Shell to the Sadie Hawkins school dance, and Sheldon hopes that he can impress Jenny enough to reveal his identity to her. Everything starts going wrong, however, when Letta and the Space Bikers crash the dance.

Crackerjack Cluster inventor Krackus has managed to scatter Jenny's parts all over the world, and Brad, Tuck, and Sheldon must put their friend back together before Krackus can call Vexus on his success.

Armagedroid—once a powerful global protector programmed to disarm and destroy all weapons before he went rogue—returns to Tremorton, and Jenny finds herself unable to stop such a huge robot.

Killgore, a small wind-up robot, hopes to kidnap Jenny in hopes of impressing the Cluster, but no one can resist his unintentionally cutesy appearance.

Tuck admires the Silver Shell, so he manages to convince Sheldon into making him Silver Shell's faithful sidekick, the Tin Can. Being a sidekick is not quite what he expects, though.

Jenny's new "bachelor pad" is the new hot spot in town, but her new party lifestyle begins to interfere with her own personal duties.

Scorned by Tremorton after ruining the town's 300th anniversary celebrations during a fight with Vexus, Jenny gets fed up with being unappreciated by humans and soon finds herself in Cluster Prime, the capital of Vexus' empire. She finally gets a chance to live with other robots like her, but soon discovers there's more to Cluster Prime than meets the eye. Note: This is a quadruple-length special.

Scorned by Tremorton after ruining the town's 300th anniversary celebrations during a fight with Vexus, Jenny gets fed up with being unappreciated by humans and soon finds herself in Cluster Prime, the capital of Vexus' empire. She finally gets a chance to live with other robots like her, but soon discovers there's more to Cluster Prime than meets the eye. Note: This is a quadruple-length special.

Not to be outdone by each other, a fashion war erupts between Jenny and the Crust cousins. Brit and Tiff employ psychological warfare by making Jenny feel self-conscious about her weight, so she urges Sheldon to make her as light as possible, which results in giving up her weapons and armor.

Looking to find a way into Jenny's heart, Sheldon steals a set of XJ-9 schematics from Dr. Wakeman. Vexus, however, also has eyes for the schematics, and is willing to disguise herself as "QT2" to trick Sheldon into giving them to her.

Jenny gives in to Tuck's request to be his entry for the hit robot combat competition "Robot Wars", despite finding the event barbaric.

Tired of being stuck under Jenny's shadow, Brad sets out to be his own hero. However, he finds himself in hot water when he runs afoul of the scientist Dr. Locus and his daughter Melody. Locus wants the XJ-9 schematics for reasons yet unknown and when Jenny gets knocked out in battle, Brad has to prove himself.

Jenny is convinced that Dr. Wakeman's new boyfriend is a psychopath.

The brand-new "Action Jenny" toys are a huge success, and Jenny finds herself taken in by the fame. However, they soon turn out to be Vexus and Krackus' newest plan to conquer the world.

Due to internal disputes, the Teen Team has broken up. With no place left to go, Misty heads back to Earth to be with Jenny. Teased at school by the Crust cousins for her appearance, Misty convinces Jenny to get back at them through a prank war.