Absence Makes the Heart Go Yonder: In the Grand Finale, Ron was worried this would happen between him and Kim following graduation with Kim going off to college and leaving him behind. This is not the case however, as Word of God confirms no matter what, Kim and Ron will be together forever.
Ron Stoppable: Fearless Ferret foiils fiendish foe. 'S a lot of F's.
Adipose Rex: King Rodingon, who was replaced by King Wallace in the episode "Royal Pain".
Adrenaline Makeover: Over the entire fourth season, Ron slowly worked toward becoming cool enough to be Kim Possible's boyfriend. In the finale, when a threat downs the girl who can do anything, the sidekick steps up and embraces his Monkey Kung Fu.
An Aesop: Most every episode. Sometimes subverted, sometimes forgotten from a previous episode.
Hilariously so in the second episode to feature Gill as the villain:
Normally I would say we learned that mistrust and paranoia were bad...except those were the things that saved us.
When will Ron ever learn that being popular just isn't him and that he should believe in the friends that like him for him?
Kim learns that her brothers can be helpful and not just nuisances at least twice, and to disregard peer pressure from Bonnie a good few times.
Affably Evil: The Seniors, especially Senor Senior, Sr. He treats his villainy as more of a part-time hobby than anything and doesn't seem to be a bad person at all. Ron says that Sr. is a bad man with good manners.
DNAmy is the sweetest, kindest, sociopathic geneticist you could ever hope to meet. She's not a bad person...she just wants to pervert nature and science to create life size abominations unto all things good. Or "Cuddle Buddies" as she likes to call them.
Almost Kiss: Way too many in Season 4 when Kim & Ron were about to kiss. Wade, Monique, and Bonnie were just a few of the people who interrupted would be kisses between Kim and Ron. Word of God admitted it was an intriguing gag.
Ambiguously Brown: Quite a few characters - Wade, Bonnie Rockwaller, a few of Drakken's henchmen...
Amplified Animal Aptitude: Some of the animals in the show exhibit intelligence higher than normal for their species. Team Pet Rufus carries it much further for the sake of various jokes (he masters ninjitsu in a week, is skilled in electronics repair, and (using a unique full-body approach) can play the electric guitar.)
Arc Welding: In his second episode, Monkey Fist revealed that he had his body modified to gain more monkey-like features. In DNAmy's second episode she reveals she was the one who made those modifications.
Arms Dealer: Jack Hench's HenchCo operation is a straightforward (if somewhat toned down to fit the KP universe) example. May also describe a few other characters, such as Cyrus Bortle auctioning off his Moodulator chips.
Art Shift: The episode "Virt-U-Ron" featured a blockier style of art to show that they were in a video game.
Art Evolution: Monique went from having black dot eyes, to white eyes with pupils by the second season.
Also, the characters had more movement in the first two seasons than in later ones. The animation also got smoother as time went on.
Badly Battered Babysitter: Kim watching Rufus in the episode "Adventures in Rufus Sitting". Kim and Ron watching Hana in the episode "Oh No! Yono!".
Bare Your Midriff: Kim showed this off with every outfit she had in the first season. The animators eventually dropped the Limited Wardrobe and by the end of the series it was all but gone. Her last midriff outfit to go was her classic mission outfit in "Clothes Minded".
Lampshaded by Kim's father in the aforementioned episode. When he hears that Kim is in the market for a new mission outfit, he gives her a very large, cumbersome suit of Powered Armor to wear.
"It's been my dream to see you save the world without baring your midriff."
Why stop with Kim? There's Bonnie and the rest of the cheerleaders, and a few background female characters are like this too.
Battle Couple: Kim and Ron. Albeit Kim is by far the more "combat effective" of the two, but the series does make it a point that she definitely works better with Ron than without him. Although it seems the two fit this trope fully by the end of "Graduation".
Beauty Is Never Tarnished: Averted in "The Truth Hurts" when Kim, under the influence of a truth ray, admits to picking her nose when nobody's looking. Played straight most of the time: the character might get dusty, muddy or soaked with water, but only a few moments. It's most obvious when Kim and Shego land in a mud bath in "Mad Dogs And Aliens", but are back to being spotless at the next scene change.
Be Careful What You Wish For: In Graduation, Drakken said he just wanted one clear-cut victory... granted, it didn't turn out all that bad for him.
Big "NO!": Twice in Season 4, the later is followed by Disturbed Doves. Ron has a couple throughout the series (including a truly epic one in "A Very Possible Christmas" (Season 2, episode 16), but Kim lets one out in "Trading Faces" (Season 4, Episode 3) that frankly sounds halfway between a Big "NO!" and a Tarzan yell.
These restaurants are actually almost a perfect replica of the old building design for the real life 'Del Taco' restaurant chain, which did in fact, greatly resemble a small house wearing a building-sized sombrero. Several of these old buildings still exist in various places around the United States.
Senor Senior Sr: A proper villain always leaves his foe when he's about to expire. Senor Senior Jr: Why? Senor Senior Sr: Well, it would be bad form just to loll about, waiting for it. Senor Senior Jr: Why? Senor Senior Sr: Tradition!
Falsetto Jones notably defies it to watch the Death Trap in action, even after Kim asks if he's going to leave.
Kim: Alright, but I warn you, you're breaking with villain tradition here.
Breakout Character: Shego & Drakken. They were just meant to be one of the many villains in the show. Shego was simply Drakken's sidekick; Her color scheme was chosen because green and black are "villain" colors and she didn't even have her superpowers. Drakken was more pushy, and aggressive than he turned out to be post-Season 1. They soon became main characters and arguably the mascots of the series (Besides, y'know, Kim, Ron, and Rufus.)
Breaking the Fourth Wall: "The Ron Factor", Kim stops the opening credits to ask the audience. "Wait, You Want Ron?" Given how this was Steve Loter's first episode as director, that's a considerable bit of irony, since under his direction Ron would take the spotlight away from the show's title character.
Break the Cutie: You'd think Drakken would have learned after he, Killigan, and Monkey Fist tried to do this to a five year old Kim. Nope, after getting thoroughly trounced Drew wants another shot at it. Monty and Duff on the other hand learn their lesson.
Brilliant but Lazy: Shego is considerably more competent than any of the other villains, but shows no real initiative and spends much of her time lounging around reading magazines.
The morality of mind control goes right out the window when Kim's own father brainwashes her. Or the subsequent episode where Shego having her Morality Dial switched to good is a... um, good thing. (Though it does freak Ron out.)
Brother Chuck: Star quarterback Brick Flagg showed up here and there, but he sort of vanished after a while. Although his no longer appearing was eventually justified at least for the last season - he'd graduated by then. He wasn't exactly the brightest bulb when off the football field, and it was mentioned that he'd finally graduated after being held back a few years. (He even votes for one of his opponents during the school election. Not that it mattered much.)
Buffy Speak: Despite a few affectations, the slang used by teenagers in this show is either semi-contemporary or totally fabricated. They used the Buffy Speak less and less in later seasons, which lessened the cringe factor of a few of them.
Bonnie Rockwaller's constant petty harassment of Kim - despite knowing full well that if Kim decided she'd had enough, her only choices would be "run" or "catch a beating." A cut scene in So the Drama have Monique and Kim discuss this, where Kim decides that beating on Bonnie would make her a bad person (as opposed to, say, beating on Shego).
One of the dumbest examples: Ron, who has just become the Mystical Monkey Master, throws Warhok across the landscape and manifests enough power to bring down a bunch of tripods, making the idiocy of messing with him clear. Warhok and Warmonga still try to attack him.
Bunny-Ears Lawyer: Several of the scientists Kim helps out in her adventures. The prize has to go to Dr. Freeman from "Car Trouble," a charmingly childish and eccentrically unfettered scientist who created a house full of funny AIs just so he could have off-kilter conversations with them. In his first few minutes has a dance party with his toaster (an advanced AI, but still). Then Drakken breaks into his home. This does not immediately stop the dance party - in fact, in general he doesn't seem to mind being kidnapped at all. He eventually proves too kooky for Drakken to use mind-altering technology against, so he has to resort to trickery to get the guy to do what he wants.
Nearly all of the villains count, some more than others. Before he was fired for refusing to trim off his mullet, Motor Ed was "widely regarded as the most brilliant mechanical engineer in the country." MotorEd.
Catchphrase Interruptus: In the second season Ron uses his "That would be so cool if it wasn't going to hurt us" phrase twice, but gets interrupted both times: first by Wade and another time by himself.
Bonnie weighs 105 pounds. Kim comments that a jet pack couldn't handle the weight of the two of them, yet Kim can effortlessly carry her. This could be considered somewhat plausible, however, as they are cheerleaders, and are fairly accustomed to having to carry other cheerleaders.
Classy 'N' Crass : She's well-mannered, impeccably groomed, gorgeous, and stylish to a fault. He's lazy, slobbish, has ears like two open car doors, is forever about two fashion trends behind, and smells like overripe fruit.
Clothes Make the Superman: The Battlesuit, so powerful in fact that the writers had to work hard to get rid of it. Kim briefly wonders if her regular duds have some sort of luck to them.
According to the official site, Shego's energy blasts were originally generated by some kind of mechanism in her gloves. However, the second season retconned her green glow into a superpower she got from a mysterious meteor.
Colour-Coded Emotions: The Moodulator, a device that fully changes emotion, is coded by colour. E.g, purple for random, blue for sadness, pink for love, and red for rage.
Ron: Too many times to count. It has lost all humiliation value.
Comically Small Bribe: Kim and Ron need to get into a dog show using Rufus as a "dog" but the judge does not see the made up breed Rufus is supposed to be. Ron attempts to bribe the judge with five dollars to get the judge to look past the lack of breed in the rulebook. Much to Kim's surprise, the bribe works.
Completely Missing the Point: Ron, more often than not. Biggest moment probably being from So the Drama, where both Ned and Rufus try to warn him of Bueno Nacho being "Evil", only for him to react to their lack of bendy straws.
Compressed Hair: It takes no time for Kim to fit her hair under a helmet or into a ponytail, even when a gadget pops one on her head.
Señor Senior Senior stands out principally because 'evil billionaire' is his hobby, and he's very dedicated to doing it exactly according to tradition. He doesn't mind losing, because that, too, is traditional.
Dark Horse Victory: "Return to Wannaweep": Kim, her rival Bonnie and even Ron end up losing the Spirit award to the shark mascot.
The best example would be with Ron. While Kim is escaping an elaborate Death Trap, Ron ends up as a last-minute write-in to stall for time. He ends up performing various vaudeville styled acts from dancing with Rufus, being a ventriloquist with Rufus as a puppet, playing the 'Star-Spanngled Banner' with the rims of glasses, breathing fire with hot sauce before breaking several concrete bricks via a head-butt. While none of these talents are bad, they are admittingly odd compared to Kim's and Bonnie's. Nevertheless, he wins the talent show and as Barkin says:
"Proving once and for all that quantity wins over quality."
Dawson Casting: An in-universe example: In the episode "And the Mole Rat will be CGI". Heather and Quinn are 28 but play high-schoolers Kim and Ron.
Ron: Drakken has total mind control power?! Kim: Yet another "Take Over the World" thing! Ron: That, or he's gonna force people to listen to those stories about his twisted childhood... (cut to Shego with a chip stuck to her forehead, listening respectfully to Drakken) Drakken: Then, in fourth grade...
Does This Remind You of Anything?: In Episode 53, Kim and Shego are affected by devices known as "moodulators" that makes them—especially in the presence of the men—become affectionate at one minute, and lashing out at them in anger in the next.
In "A Sitch in Time," Ron and Kim are talking about him moving to Norway and Kim's trying to reassure him that they'll still be able to work together.
Don't Tell Mama: Drakken's mother completely believes that he is a radio talk show psychologist.
Do Not Adjust Your Set: Apparently this is so easy in Kim Possible's world that even the show's very lowest grade villains, a disgruntled Smarty Mart employee and a washed-out reality TV star, can seize control of every TV on the planet.
At least, it's easy if you're a Computer Genius like Lucre or you have access to a lot of your former show's broadcast equipment like Adrena Lynn.
Doomed Hometown: The Possible Family Home is destroyed in both Finales. Bueno Nacho suffers from villain attacks often enough.
Dude, Where's My Respect?: Ron gets no respect in school, despite his key role in regularly saving the world with Kim. Even she doesn't get much slack from people on the home front for all the times she's saved them all from doom.
Ironically, Drakken gets this as well. Despite the fact he's probably come closer to succeeding than any other foe, only Shego gets rescued from prison repeatedly.
The villains, especially Drakken and Shego, live remarkably open lives given their histories of destruction, jailbreak and attempts at world domination. Also, consider what goes on with Drakken and Shego early in the Post Script Season. She gets busted out of prison on two separate occasions with no attempt to bring him along, then goes on vacation while leaving him to rot. He has his new sidekick throw her out of the lair and then capture her so she can watch the new sidekick beat Kim. The next time we see them after that, they're working together as usual.
Eccentric Millionaire: Señor Senior Senior (and his son Señor Senior Junior.) Sr. took up supervillainy as a hobby: Jr. shows only occasional interest in the field.
Even Evil Has Standards: In "Steal Wheels" Shego objects to stealing Felix's technologically advanced wheelchair, asking incredulously "What's next, stealing candy from a baby?". Subverted in that one episode later, that's exactly what she does.
In the Halloween episode aptly named "October 31st", Kim lies to both her parents and Ron to go to a party. Later when she is caught, the villains remark their disappointment in Kim's choice as they are loaded onto the police wagon.
Drakken's mind-controlling shampoo fails mostly because he has to stick to "truth in labelling" laws, and so it's called "Dr. D's Brainwashing Shampoo and Cranium Rinse" and labelled "Lather, Rinse, Obey!"
Everybody Knew Already: Most of the villain lairs, which are obviously intended to be secret and untraceable by the villains themselves but are easily found by a ten year old boy, Global Justice and/or pretty much anyone the plot wants to know. Particularly notable with Dementor and Drakken, who really push the "secret lair" schtick. In one memorable case, Drakken's lair was found no problem by his mother. Like everything, lampshaded - this time by Motor Ed.
Ed: "Dude, seriously, what type of secret hideout is this? Everyone knows you live here, man!"
Drakken: "One magazine subscription and suddenly everyone's got your address..."
Everyone Can See It: That Kim was jealous of Yori in "Gorilla Fist". Wade and Monique for example.
Kim and Ron's relationship in general. When they finally do become a couple in "So The Drama", Bonnie of course laughs ("It finally happened. She's dating that loser!"), everyone else cheers, implying they'd been expecting it to happen all along.
Duff wants to create the world's largest golf course.
DNAmy steals and kidnaps to create live-sized cuddle buddies.
Monkey Fist's ambition is to be the 'ultimate monkey master'.
Evil Laugh: This is the only thing about being a villain that Doctor Drakken knows how to do right. Also parodied by Frugal Lucre, and Señor Senior Senior's winning line "Come, son. Let us return to our lair and practice our evil laughs together."
Family-Friendly Firearms: With the exception of the Area 51 soldiers (who seem to be armed with M14s and M16s) and possibly Barkin's Vietnam War flashback, no one is shown carrying or using any conventional guns.
Fantasy Kitchen Sink: Magical objects, superheroes, mutants, aliens, time travel, ghostly possession, and Mystical Monkey Powers.
Fastball Special: Ron throws Rufus at Dementor's control panel in "Ill Suited", Rufus is also a functional shuriken if the need arises.
Feet of Clay: Will Du, the "number one Global Justice agent".
Feminine Women Can Cook: So, naturally, it's a blind spot for the girl who can do anything, while Ron is an excellent chef. She improves at the end of the relevant episode, though fanon makes her a Lethal Chef, often to physics-defying levels.
Fiction as Cover-Up: It turns out that Area51 really is filled with aliens and captured spacecraft that the government is experimenting on, and the government deliberately leaked all the rumors and conspiracy theories to the public because they knew nobody would really believe it if "the truth" ever got out. Kim and Ron are understandably perturbed that that they are being asked to help keep a secret that everybody already knows.
First Girl Wins: Kim is Ron's first girl, and Ron is Kim's first boy. Both in the sense that they're the first ones we see meeting each at the start of the pilot, and their backstory of becoming friends on the first day of kindergarten.
Flat "What.": Kim does this a few times, such as when she found out that Monique liked wrestling.
Forgot A Bout His Powers: In the episode Blush the "Wade-bot" launches itself off a cliff in the Amazon with Ron and Rufus, however Wade only remembers after the leap that he forgot to install the parachute. Yetjust a few minutes earlier in the same episode the Wade-bot had a hang-glider attachment to save Ron and Rufus from plummeting down a waterfall, and he conveniently forgets about this gizmo once its could be useful again.
Foreign Queasine: One episode had Ron and Rufus finding a bag of chips that belonged to the current client, whereupon they began eagerly eating them... at least until the client tells them the chips were made from crickets.
Fountain of Youth: Drakken and Nanny Nane both have devices for turning people into toddlers.
Free-Range Children: Kim is only around 15 - 18 during the show's run and yet she can go anywhere she pleases from Tokyo to Peru to outer space as long as it doesn't involve romance. She sometimes drags her friends—and her two younger brothers—along too.