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The Stepbrother Sitch is a Kim Possible & Phineas and Ferb Crossover written by Cartoonofan (known on this site as RippenFan33). It is the first in a series of crossovers, all set in the same universe, featuring a number of Disney cartoons from the past decade.

The stories in the series so far are as follows:

1. The Stepbrother Sitch: After learning Drakken has traveled to a town called Danville to meet with a scientist named Doofenshmirtz, Kim, Ron, & Rufus head off to stop him. However, a blown tire on the Sloth results in them stopping at the house of a pair of very inventive stepbrothers and their crazy sister, who offer to help with the mission. Hilarity Ensues. A Dramatic Reading of this story can be found here.

2. Fan-tastic Voyage: A direct sequel to the first, sees Doof come to hang out at Drakken's lair while Doofenshmirtz Evil Incorporated is being fumigated, and the two plot a scheme to conquer the world using viral videos. Meanwhile, since Lawrence is in town for a convention, Phineas, Ferb, & Candace pay Kim a visit, and the latter attempts to copy Kim in hopes of becoming popular, while P&F collaborate with Jim & Tim on a pair of rocket bikes.

3. The Life of Riley: a Kim Possible & The Replacements Crossover set a few days after the aforementioned story. Riley Daring is a big fan of Kim and uses her uncle, Conrad Fleem, to convince her to come to Pleasant Hills so she can meet her, much to the dislike of a jealous K. Unfortunately, Kim's foe Professor Dementor is an old nemesis of K's and has chosen this moment to plot his revenge.

4. Kim Goes Hawaiian: Needing a break from their adventures from the past two stories, Kim & Ron decide to go on vacation to Hawaii, and meet up with their old friend Lilo Pelekai.note  Unfortunately, Dementor has escaped from prison following the last story, and is on the island, and eventually teams up with an escaped Hämsterviel to take control of Stitch's various "cousins".

5. Phineas & Ferb's Excellent Adventure: The Daring family, with Jacobo, Tasumi, & Sheldon in tow, are off to Danville to receive an award that Riley has won. However, Dick failed to make hotel reservations, but K learns that Linda, who she went to college with, lives there and gets her to agree to let them stay. Candace recruits Riley to help bust her brothers while Todd attempts to manipulate them into building stuff for him and his friends. But, unknown to all of them, K's old foe Dr. Scorpius is there with an evil scheme that involves an unwitting Doofenshmirtz.

6. Double the Fist, Double the Trouble: a crossover between Kim Possible & Randy Cunningham: 9th Grade Ninja; deciding a ninja is needed to destroy another ninja, the Sorcerer has McFist acquire Monkey Fist and frees him from his stone prison, sending him after Randy. Luckily, Kim is in town to guest star on Heidi's show, and Team Possible must join forces with Randy & Howard to stop their combined foes. Oh, and Theresa wants to ask Randy to be her boyfriend, too.

7. Hotel Gravity Falls: a Gravity Falls & Kim Possible crossover; Hoping to make more money, Stan converts the Mystery Shack into a rustic hotel. Meanwhile, Team Possible, with Kim's friend Tara, who wants to prove herself a hero in tow, arrive to locate Monkey Fist. Soon they find the simian villain has teamed with Drakken to locate the Mask of Magorga, which will allow its users to control the minds of everyone, and they must team with Dipper & Mabel to stop the villains.

8. Part Time Dwarf: Penn and crew are sent on their newest mission to a strange town called Jollywood, where they meet a group of dwarves named the 7D, who seem oddly familiar. The two team up to stop Rippen, who has joined forces with the Glooms, while Sashi fights off the advances of Dopey, who is smitten with her.


These fanfictions contain examples of:

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    The Stepbrother Sitch 
  • Affectionate Parody: Phineas gets the inspiration for his big idea after watching Priest.
  • Big Bad Duumvirate: Dr. Drakken & Dr. Doofenshmirtz.
  • Captain Obvious: When Monogram sees Rufus in Perry's lair, he asks Carl who he is; Carl replies that he appears to be a naked mole rat.
  • Continuity Nod: Shego & Vanessa discuss several old plans of both Drakken & Doof's from several episodes to prove which of them has the stupider ideas.
  • Didn't Think This Through: If you put a naked mole rat in straps meant for a human, of course they'll slip out. Doof himself lampshades this when it does.
  • Don't Explain the Joke: After Doofenshmirtz straps Perry to a table in front of a laser, he tells him to "prepare for a slice," before explaining that he means the laser will slice him to pieces.
  • Free-Range Children: Phineas, Ferb, & Isabella pretty much just walk down to Doofenshmirtz Evil Incorporated with no one noticing. Justified in that Candace wasn't really paying attention.
  • Incredibly Lame Pun: Most of the titles of the stories, as well as the respective chapters.
  • Inescapable Net: Averted & Played for Laughs; Phineas & Ferb throw a net on Drakken and he orders Shego to help him, until she points out it's just a net, allowing him to easily escape.
  • Innocent Innuendo: Kim & Ron's actions at the beginning.
  • Insistent Terminology: During the story, Shego grabs Isabella and threatens to "fry the Girl Scout" unless Kim & Ron surrender. Isabella then angrily reminds her captor that she's a Fireside Girl, not a Girl Scout.
  • Lampshade Hanging: Frequently, given both shows involved.
  • Loophole Abuse: As Candace notes, Kim told her not to touch anything in the car, she never said she couldn't drive it.
  • Oh, Crap!: Candace realizing that the Sloth, (which she "borrowed") is now driving itself back to her house.
  • Once Done, Never Forgotten: Drakken's "mind control shampoo" plan; Vanessa admits it's dumber than any plan of her dad's and Drakken is quite embarrassed when Shego brings it up.
  • Verbal Backspace: As they're escaping from the cage, Isabella tells Phineas that "if we don't get out of this, I just want to say... I love you." Phineas doesn't hear her due to picking the lock, and when he asks what she said, she replies with "I love glue."
  • What Happened to the Mouse?: Vanessa just disappears from the story after restoring Doofenshmirtz Evil Incorporated's power.
  • Would Hurt a Child: Shego has no problem frying Isabella if Kim doesn't surrender.

    Fan-tastic Voyage 
  • Author Appeal: Kim & Candace find themselves tied up prisoners of the two doctors.
  • Big Bad Duumvirate: Drakken & Doof, yet again.
  • Borrowed Catchphrase: At the end, both Doof & Drakken use each other's catchphrases, and find it really fun to do so.
  • Brainwashed and Crazy: Perry ends up like this, compliments of the two docs.
  • Curb-Stomp Battle: Kim vs. Perry Perry wins the first time, and nearly beats her the second time until his brainwashing is undone.
  • A Day in the Limelight: Candace appears in this story much more than she did in the original, and is even integral to the plot.
  • Demoted to Extra: Isabella isn't as prominent in this story as she was in the previous one. Although, that's because most of the story takes place in Middleton, and she stayed behind in Danville to watch Perry.
  • Good Angel, Bad Angel: Candace sports these when deciding whether to break into Kim's closet; even her angel suggests she should.
  • I'm Standing Right Here: As Candace badmouths her brothers over the phone, Phineas comments that he can hear everything she's saying.
  • Let Us Never Speak of This Again: Kim says pretty much those exact words to Ron after she gets beaten by the brainwashed Perry.
  • Loony Fan: Candace comes off as one of these, even going so far as to buy clothes that look exactly like Kim's.
  • Moment Killer: Candace provides one for Kim & Ron.
  • Portmanteau Couple Name: Ron attempts to come up with one for him and Kim, but finds neither "Rim" or "Poppable" to be all that great.
  • "The Reason You Suck" Speech: Kim gives one to Candace after getting fed up with her actions, basically telling her to quit copying her and get her own life.
  • Strange Minds Think Alike: During the story, Kim, Ron, & Candace are shown watching Ballroom with the B-List and commenting on it. Moments later, Doof & Drakken are shown doing the same.
  • Suspiciously Specific Denial: Isabella did most certainly not lose Perry and he is definitely in her house and not lost.
  • Talk to the Fist: Perry delivers this to Doof at the end.
  • What Happened to the Mouse?: Shego disappears near the end of the story (although Drakken said she was taking her vacation). The real reason is because the author figured she'd easily defeat Kim and supersuit-enhanced Candace and wanted to give them a fair fight.
  • Would Hurt a Child: Drakken's henchmen and Drakken himself, eventually.

    The Life of Riley 
  • Amusing Injuries: Shelton gets this when he re-activates Dementor's time bomb.
  • Big Bad: Professor Dementor
  • Bound and Gagged: Kim & Agent K at the hands of Dementor, as seems to be the case in many of this author's works.
  • Busman's Holiday: Weirdness just seems to follow Kim everywhere.
  • Brainwashed and Crazy: Riley at the hands of Dementor and Henchco's newest device, a brainwashing helmet.
  • Deus ex machina: The fact that the HenchCo brainwashing helmets can be undone with The Power of Love although it can fall under Rule of Funny.
  • The Dragon: Myron, Dementor's dummkopf brother in-law.
  • Funetik Aksent: Dementor is written with one of these.
  • "I Know You're in There Somewhere" Fight: Kim tries this on the brainwashed Riley but gets a punch in the gut for her troubles.
  • I'm Standing Right Here: Riley says these exact words after Todd tells Rufus he'd love to see her reaction if he put him in her sock drawer.
  • Like a Weasel: Todd initially says he hates Kim, only to become a massive fanboy when she actually arrives.
  • Mama Wolf: Agent K threatens Professor Dementor when he reveals his plans for Riley, promising, among other things, that there won't be enough for an autopsy when she's done with him.
  • Overly Narrow Superlative: "You're the best mother in the history of mothering."
  • The Power of Love: Agent K uses this in to break the brainwashing on Riley.
  • Revenge by Proxy: Dementor's plan- he plans to exact his revenge on Agent K by brainwashing her daughter into believing he's her father.
  • Running Gag: When Riley sarcastically tells Dick that Kim is a crimefighter/pop star, he keeps making references to said career throughout the story.
  • Sarcasm-Blind: Both Dick & Ron experience this at different points.
  • Shout-Out: After meeting CAR, Ron comments that he's like that talking car on that show and asks him to say, "I've got a bad feeling about this Michael."
  • Tempting Fate: A Cutaway Gag shows the developments of one of Henchco's newest weapons a brainwashing helmet with one of the developers telling Jack Hench it works perfectly... although extreme feelings of love from a relative are strong enough to disable its effects. Hench figures the odds of that happening are rare, and orders the product shipped as is.
    • Kim saying that none of her enemies could possibly show up for a little autograph signing.

    Kim Goes Hawaiian 
  • Arbitrary Skepticism: Despite having actually seen aliens, Drakken finds the notion of alien experiments to be unbelievable.
  • Berserk Button: Alien experiments or not, you turn Ron into a bug and Kim will not hesitate to take you out.
  • Big Bad Duumvirate: Professor Dementor & Dr. Hämsterviel.
  • Brainwashed and Crazy: All of Stitch's cousins (save Ace) are turned back into their evil selves thanks to Hämsterviel & Dementor.
  • Buffy Speak: Actually not Kim or Ron, but Hämsterviel uses this.
  • Busman's Holiday: Even on vacation, Kim can't seem to avoid fighting evil.
  • Call-Back: In the previous story, Kim told Ron she didn't want him eating Bueno Nacho in the car because it was hard to clean out. In this story, she lets him have a chimerito, because, since they're going on vacation, she can relax the rules a little.
    • When Kim finds Drakken on the island, she mentions she's there to get a vacation from her last two adventures, including his "Take Over the World through the Internet" scheme from "Fan-tastic Voyage".
  • Co-Dragons: Myron for Dementor and the Leroys for Hämsterviel.
  • Conservation of Ninjutsu: Averted, the Leroy's often attack Stitch en masse.
  • Curb-Stomp Battle: Ace, the only not-evil of Jumba's experiments (and therefore, immune to Hämsterviel's beam) easily defeats a handful of the rogue experiments until Shortstuff manages to backhand him.
    • Also, even with Drakken & Shego's help, the heroes don't fare so well either.
  • Egopolis: Dementor plans to rename the taken over island "Dementoria" until Hämsterviel convinces him to come up with something with both of their names.
  • Enemy Mine: Kim is forced to team with Drakken & Shego, who were taking a vacation on the island, to stop the rogue aliens. Naturally, Kim & Shego aren't too happy about that.
  • Funetik Aksent: Dementor again has one, but not Hämsterviel, so as to not make it confusing.
  • Forceful Kiss / "Shut Up" Kiss: Kim gives Ron a combo of both of these near the end after he won't stop babbling.
  • Hoist by Their Own Petard: Pointed out by Jumba, that it's ironic that Hämsterviel & Dementor are defeated by the very experiments they intended to use to conquer the island.
  • I Have to Go Iron My Dog: Ron gets out of eating Pleakley's pancakes by saying, "Me and Rufus have... some stuff to do."
  • Insistent Terminology: The Leroys are not Hämsterviel's pets, they are his "henchmen".
  • Lethal Chef: Pleakly, as per usual; when making pancakes for breakfast, he said that he didn't have all the ingredients but he "used some substitutions".
  • Nice Job Breaking It, Hero: If Kim had stayed around to ensure that the authorities picked up Dementor, or even went after him, he wouldn't have escaped and hooked up with Hämsterviel.
  • Noodle Incident: What happened when Ron tried surfing; Word of God is that the author was originally going to write that scene, but then decided it would be funnier if it was left to the reader's imagination.
    • Also, how Ron knows that nacho cheese & puke are hard to clean.
    • Whatever Lilo & Stitch did that Jumba won't allow them to use his inventions anymore. They assumed a heat ray would generate heat and were just trying to warm up.
  • Police Are Useless: Dementor mentions he's no longer in jail because the jail in Pleasant Hills was "run by incompetents"; Wade later learns that the reason he didn't know Dementor was out was because they were so embarrassed he escaped, they lied and said he was still there.
  • Post-Kiss Catatonia: The result of the Forceful Kiss mentioned above.
  • Right Behind Me: While waiting for Kim, Ron tells Lilo that she takes forever to get ready and that you never see pictures of her in the morning "because they are not flattering"; he then learns that Kim heard everything he said from the doorway.
  • Screw This, I'm Outta Here: After Myron watches Stitch battle the Leroys, he decides its best to just leave.
  • Shout-Out: After Kim tells Wade that Dementor was planning to block out the sun, Wade questions "didn't an old guy from a TV show try the same thing?"
    • When Ron is talking about his bad surfing experience, he comments that he got a starfish in his swimsuit and they're not all silly and funny like on TV.
    • "This isn't good, this is super bad! Unlike the movie, which was super good!"
  • Teeth-Clenched Teamwork: Kim & Shego, of course.
  • Villains Out Shopping: Turns out Drakken & Shego scheduled their vacation at the same time and in the same place as Kim.

    Phineas & Ferb's Excellent Adventure 

    Double the Fist, Double the Trouble 
  • Big Bad Duumvirate: Monkey Fist & McFist, hence the "double fist" of the title.
  • Bound and Gagged: Kim & Theresa Fowler, which seems to be a common theme in works by this author.
  • Brick Joke: During her first battle with the Robo-Apes, Kim contacts Wade about a gadget that can disable them, but he reveals he has several, but didn't give her one. Later in the story, one arrives via post.
  • Busman's Holiday: Kim can't seem to go anywhere without encountering her foes.
  • Car Fu: How Kim saves Randy during his first battle with Monkey Fist.
  • Cool Sword: Monkey Fist is given one by Viceroy which can fire bolts of electricity.
  • Crazy-Prepared: Since she seems to always encounter missions wherever she goes, Kim has started keeping an extra pair of her mission clothes in the Sloth, just in case.
  • Curb-Stomp Battle: Randy's first encounter with Monkey Fist; he's barely a match for him, due to the latter's karate skills and electrified sword. Lucky Kim came to the rescue.
  • Damsel out of Distress: Kim manages to free herself & Theresa while Randy & Ron fight the bad guys.
  • Faux Horrific: Ron is horrified to learn that there are no Bueno Nacho restaurants anywhere in Norrisville.
  • Hypocritical Humor: Much humor is mined from Randy & Howard finding Kim's usual vocabulary odd, despite the fact that they and their friends use equally odd terms.note 
  • I Have Your Wife: Monkey Fist captures Kim, and an interfering Theresa, to lure Randy & Ron to Mc Fist Industries. Kim even calls him out on this noting how cliche the whole "kidnap the heroes' girlfriend to lure them into a trap" thing is.
  • Mecha-Mooks: The Robo-Apes, but this time they're programmed with ninja moves and armed with ninja weapons. Although he's not much of a technology guy, Monkey Fist admits they are more effective than his usual ninja monkeys.
  • Noodle Incident: Whatever happened when Heidi interviewed Principal Slimovitz. It was apparently her worst show ever.
  • Official Couple: Randy & Theresa by the end. Though the writer rarely strays from the canon of the shows, he decided to go for it, since most people ship them anyway.
  • Running Gag: Howard saying "what the cheese?" and Rufus then popping out of Ron's pocket to exclaim "cheese!"
  • Screw This, I'm Outta Here: Kim walks off Heidi's show, after she questions why she's dating Ron and not someone better looking.
  • Teeth-Clenched Teamwork: Monkey Fist does not care for McFist at all, and is only helping him as he feels he owes the Sorceror for freeing him.
  • Villain: Exit, Stage Left: Monkey Fist escapes during the big battle, as part of a Sequel Hook.
  • Villainous Breakdown: Monkey Fist starts to lose it after learning Ron has mastered the Mystic Monkey Power, since he always considered that his destiny.
  • Villain with Good Publicity: McFist uses this to escape any punishment. When Kim accuses him of being party to her and Theresa's kidnapping, and helping Monkey Fist, he claims that Monkey Fist forced him into doing all of it. Unable to prove his involvement, Kim is forced to let him go.

    Hotel Gravity Falls 
  • Ascended Extra: Tara plays a larger role in this story then she ever did on the TV series.
  • Bar Brawl: Mabel starts one at the Skull Fracture to allow Kim an opportunity to escape.
  • Big Bad Duumvirate: Drakken & Monkey Fist.
  • Bound and Gagged: Tara, after the villains kidnap her for her necklace since it's the key to locating the Mask.
  • Brainwashed and Crazy: The power the Mask of Magorga gives; the effects are reversed by destroying the Mask. After acquiring it, Monkey Fist uses it on everyone but Soos, Wendy, Tara, and the Pines twins.
  • Cat Fight: Soos describes the fight between Wendy and a mind-controlled Kim as this. He also says it's the worst one ever.
  • Chekhov's Gun: Both the necklace Tara buys from Stan and the purse Kim gives her come back in different ways.
  • Continuity Nod: Kim has been tracking Monkey Fist ever since he escaped her at the end of the previous story.
  • The Cuckoolander Was Right: While trying to find information on the medallion that leads to the Mask of Magorga, Mabel suggests there might be an entry on it in Dipper's journal. Dipper counters that's highly unlikely, but Mabel notes that Gideon learned of the mask from his journal, but never found the medallion, so maybe the entry for it was separated to keep anyone bad from finding the mask. She's right.
  • Dressing as the Enemy: Soos goes undercover as one of Drakken's henchmen so he can help the heroes.
  • Hero Worship: After learning she's a hero, Mabel immediately becomes Kim's biggest fan.
  • "I Know You're in There Somewhere" Fight: Tara attempts this on a mind-controlled Kim. It doesn't work.
  • It's All My Fault: Kim believes this after Tara is kidnapped by Drakken & Monkey Fist's forces to get her medallion.
  • Let's Split Up, Gang!: After seeing a flyer showing that Drakken is recruiting toughs at the Skull Fracture for henchmen, Kim suggests they split up, with she & Mabel going there while Ron, Rufus, & Dipper head on towards the jail.
  • Nice Job Breaking It, Hero: If Tara hadn't used the taser purse on the Drakken henchman that approached her, she would've learned it was Soos in disguise, attempting to help. She actually does apologize when she finds out.
  • Noodle Incident: Whatever happened with Stan's bottled water business. It would've been more successful had the local pool not be so heavily guarded.
  • Revenge by Proxy: Gideon is helping Monkey Fist in part because Monkey Fist using the mask on the townspeople would allow him to indirectly get back at them for locking him up in the first place.
  • Screw This, I'm Outta Here: Dipper has no interest in getting involved in his grunkle's crazy hotel plan.
  • Shout-Out: After learning about Summerween, Ron tells Dipper about how he loves Halloween and shows off a photo of he and Kim's first couple's costume, dressed as Anna & Kristoff.
  • Villain Team-Up: In addition to Drakken & Monkey Fist, the opening of the story sees Team Possible facing Duff Killigan & Motor Ed.
  • You Have Outlived Your Usefulness: Monkey Fist pulls this on Drakken once he has the Mask of Magorga.
  • You Shall Not Pass!: Wendy tries to pull one of these to allow Tara time to escape, but ends up chickening out.

    Part Time Dwarf 
  • Abhorrent Admirer: Dopey to Sashi.
  • Big Bad Duumvirate / Villain Team-Up: Rippen and the Glooms.
  • Blow You Away: Rippen creates a giant tornado with Hildy's wand to dispose of Grim.
  • Bond Villain Stupidity: After taking Queen Delightful prisoner, essentially becoming ruler of Jollywood, Rippen takes time to savor his victory and enjoy a celebration before crowning himself (thereby actually winning), which allows Penn & the 7D time to get to the castle and thwart him.
  • Bound and Gagged: Queen Delightful, and later, Hildy, after Rippen double crosses the Glooms.
  • Dem Bones: Rippen uses Hildy's wand to create skeleton warriors to battle the heroes.
  • Enemy Mine: Averted; Grim attempts to work with the heroes to stop Rippen to save Hildy, but they leave him behind and he doesn't actually arrive until everything's already over.
  • Knockout Gas: Used on Queen Delightful & Lord Starchbottom via paint cans.
  • Phlebotinum Breakdown: Penn and company are unable to locate and stop Rippen due to Sashi's SPECS being on the fritz; after the mission, it was revealed the glitch was due to Phyllis accidentally spilling coffee on the control panel.
  • Running Gag: Whenever Penn and company leave to discuss their mission and are asked about it, they always reply that they were talking about "dwarf stuff".
  • Squick: in-universe example; after Hildy is freed, she and Grim starting making out, disgusting the 7D & Part-Time Heroes alike.
  • Strange Minds Think Alike: Although Penn made up "Dwarfville Town" as a cover, it turns out such a place actually does exist and Queen Delightful knows someone from there.
  • Villain: Exit, Stage Left: Rippen & Larry manage to escape, albeit out a window from a tall castle.
  • We Can Rule Together: Rippen offers this to a captive Hildy, but she refuses, since she loves her Grimmy.
  • What Does She See in Him?: Everyone seems confused by Dopey's attraction to Sashi, especially her.
  • Wrong Genre Savvy: Once Penn recognizes the 7D, he figures his mission is to help them rescue Snow White. However, he doesn't realize that this is a world where Snow White doesn't exist, and his search for her end up costing the heroes precious time.
  • You Have Outlived Your Usefulness: The Glooms were planning to do this to Rippen once they had taken over the castle, only for him to beat them to it.

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