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Ron's having letting go issues when he has to pass on the role of the Middleton Mascot to Kim's brothers. Kim learns that a green-skinned, energy blasting woman just broke Dr. Drakken out of prison... but it's not Shego?
All Episodes - S04
EPS01
As senior year begins, Bonnie is surprised that Kim is still dating Ron and advises her that as a senior cheerleader, she should only date an athlete. Kim attempts to reassure Ron that she doesn't plan to take Bonnie's advice. However, Ron misunderstands an overheard conversation between Kim and Monique and decides that he has to join the football team in order to maintain his relationship with Kim. Meanwhile, Professor Dementor is taken by surprise when he learns that Kim now has an indestructible battle suit. He lures Kim and Ron into a trapped house so he can analyze the suit and find out how to overcome it. Written by Joshua Kreitzer
EPS02
Ron takes Kim to an expensive restaurant, but she is disappointed to find that instead of cash, Ron only has coupons for them to order from the children's menu. Consequently, Kim gets a job working with Monique at a clothing store, and they encourage Ron to find a job of his own, but his initial experiences with employment go poorly. Meanwhile, Señor Senior Jr. breaks Shego out of prison to help him get a birthday gift for his father. Together, they plot to steal a rare book and a South American idol, and then they decide to kidnap the five richest people in the world. Written by Joshua Kreitzer
EPS04
It's Valentine's Day and Ron has to scramble when he suddenly remembers he has a girlfriend this year! But worse is on the horizon. Wade's got a crush on Monique?
EPS05
Motor Ed busts Shego out of prison (leaving Drakken behind) to help him pull off his most awesome plot. Meanwhile, Kim will do anything to get a car of her own... even let her brothers build one!
EPS06
Ron's having letting go issues when he has to pass on the role of the Middleton Mascot to Kim's brothers. Kim learns that a green-skinned, energy blasting woman just broke Dr. Drakken out of prison... but it's not Shego?
EPS08
Kim's mission clothes are ripped in a fight with Shego, and her efforts to find replacements at Club Banana fail when she finds they're discontinued. Both she and Ron also get involved in college prep courses, while Shego and Drakken attempt to steal dangerous technology and hide it in a fake university. Written by Daniel Timothy Dey
EPS09
For health class, Ron has to take care of a sack of flour as if it were a baby, which proves difficult for him. Ron also finds out that his parents have adopted a baby girl, whom he immediately resents, referring to her as the intruder. Also, Kim and Ron find out that Lord Monkey Fist has stolen a scroll containing instructions which could enable him to acquire a powerful ancient weapon. When they travel to Japan to stop Monkey Fist, Kim is concerned about Ron being reunited with Yori, the student ninja who was once romantically interested in Ron. Written by Joshua Kreitzer
EPS10
Club Banana's fall fashion line is shown to the store's management, including assistant manager Monique, but Kim is excluded and Monique won't breach her confidentiality agreement. Camille Leon disguises herself as Kim and steals the designs so they can be made into knockoffs by the Fashionistas in Milan. Kim goes to Milan to foil their plans, and Monique follows on her own. Meanwhile, Ron learns that teacher Mr. Barkin is also his co-worker at Smarty Mart; they get along poorly at the store, and things get worse when a stockroom accident results in them being trapped in a crate together. Written by Joshua Kreitzer
EPS11
Ron learns about his father's work as an actuary and becomes obsessed with wanting to protect first Kim, and later himself, from the risks of both everyday life and fighting crime. He becomes so fearful that he eventually encloses himself in a panic room in his bedroom. Meanwhile, former temp worker Hank Perkins offers Dr. Drakken his services as a villainy consultant. Hank introduces team-building exercises and organizational charts to Drakken's operation, leading Drakken to begin spouting business-school jargon, to Shego's disgust. Hank also diversifies Drakken's operation by getting him into the gourmet cupcake business. The cupcake shops are successful in their own right and also serve as locations for Drakken's Atmos-Freezers, which he uses to lower world temperatures with the goal of bringing the world under his domination. Written by Joshua Kreitzer
EPS12
Electronique, a villain once captured by Team Go, breaks out of prison and seeks to turn the heroes into her evil henchmen with an Attitudinator that changes their brainwaves. However, Electronique zaps Shego as well, not knowing that Shego is already villainous. Shego, now turned good, joins the faculty at Middleton High, becomes Kim's friend, and starts dating fellow teacher Mr. Barkin. Meanwhile, Shego's now-villainous brothers wreak havoc in Go City under the direction of Electronique, and Dr. Drakken, with Shego no longer around to help him, struggles to open a pickle jar. Written by Joshua Kreitzer
EPS13
Kim's class trip to the beach gets a change in destination when Mr. Barkin books them to Ft. Mystic Cove Haven, a historical re-enactment town where all modern technology is taboo. Dr. Drakken finds a genuine pirate treasure chest, with a genuine pirate ghost inside! Written by Taigan
EPS14
Ron and Kim have to interview their heroes for a school assignment. Kim suggests that Ron interview his father, but Ron doesn't see how an actuary could qualify as a hero. Instead, Ron and Kim travel to Go City so Ron can interview Hego, one of the local superheroes. During their meeting, the city is attacked by the Mathter, a villain obsessed with mathematics. The Mathter's schemes include erasing Ron from the school's records, from his employment records, and from all other databases that record Ron's existence, and then turning Ron into anti-matter that can destroy anything he touches. Written by Joshua Kreitzer
EPS15
Smarty Mart has added a stock bot robot to each of its stores to help with inventory, scaring Mr. Barkin, who fears that robots will take over the world. Martin Smarty, founder of the company, assigns Ron to a new job: being the life coach and role model for Martin's disrespectful, bratty son Artie. Meanwhile, Dr. Drakken is visited by his former cellmate Frugal Lucre, who wants Drakken to become his mentor in villainy. Although Drakken finds Lucre annoying, they team up to steal a universal remote control which can operate any mechanical device. Their plan is to control an army of the Smarty Mart stock bots. Drakken and Lucre lose the remote control, and Kim, Ron, and Rufus try to get it back to stop the robots from wreaking havoc. Written by Joshua Kreitzer
EPS16
Kim and Ron begin to suspect that there's something unusual about Ron's adopted baby sister, Hana. Meanwhile, Monkey Fist enlists the aid of an evil entity known as The Yono to hunt down the Yamanuchi School's secret weapon, The Han.
EPS21
Obsessed with his inability to steal Kim's indestructible battle suit, Professor Dementor sends his henchmen to kidnap that boy who hangs out with Kim Possible but doesn't look like he belongs with her. But instead of Ron, they end up with Kim's nerdy Cousin Larry, who she reluctantly agrees to distract while the rest of the Possible family prepares a surprise birthday party for him. To make matters worse, Larry is convinced that his kidnapping is a role playing game, and is oblivious to the dangers that he's facing... or could cause, while under Dementor's custody. Written by Daniel Timothy Dey
EPS22
As Graduation Day approaches for Middleton High, Drakken fumes that he's due for a win, Ron panics at the thought of all the changes to come, and Kim tracks down the source of mysterious markings appearing in fields all over the world.