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"Undercover Carl" is an episode of the animated series Phineas and Ferb.


Phineas and Ferb create a device to reverse the effects of gravity. Meanwhile, Agent P is literally sent on a wild goose chase when Monogram believes the boys are actually out to destroy the Tri-State Area. Elsewhere, Doofenshmirtz finds the blueprints to the anti-gravity machine and takes them for his own purpose.


The episode starts when an apple falls on top of Phineas and Ferb's heads; Phineas talks about gravity and wonder if they can turn it around. Candace comes asking what they are doing and Phineas says they wonder if they can defy gravity. Candace tells it's impossible since it's a Universal Law, just like not wearing white after Labor Day. Phineas states that it's despotism for an Absolute Law with no hope of appeal, and suddenly knows what to do today and wonders where Perry is. Candace points out that he was beside them, and Phineas says he didn't see him. At the O.W.C.A., Carl was updating his status report on his website when Major Monogram conducts his evaluation form and shows Carl that he has gold stars at Studious and Hygiene but not at Initiative. He needs to show more. Carl pleads to Monogram to make it and is given 24 hours to show Initiative before Monogram has to submit his evaluation. To do this, Carl decides to check any suspicious activity on the internet.

At Phineas and Ferb's house, they send their blueprint for an Anti-Gravity Fun Launcher to their website so that Baljeet can check it. He calls them to say that it is 97% complete, but makes a minor adjustment to make it perfect and tries to joke about it. At Doofenshmirtz Evil Incorporated, Doofenshmirtz was bored and has no idea what to do. Norm asks him about the jigsaw puzzle, but Doofenshmirtz stated that without the cover box he can't finish it. Norm then asks him about finishing his Popsicle-stick bride, but Doofenshmirtz says that until the blue dye is out of his system he can't finish it, either. Norm then kisses his Popsicle-stick bride, to which Doofenshmirtz describes Norm a "sick, sick robot". Since Doofenshmirtz needs an evil scheme but is not in a mood to create one, he decides to steal an idea from a blueprint off the internet. He then stumbles on Phineas and Ferb's Anti-Gravity Fun Launcher, downloads it and renames it as Anti-Gravity Evil Launchinator. He's not sure what to do with it and waits until something come to his mind.

At the O.W.C.A, Carl gets a transmission that Doofenshmirtz downloaded something off the internet. Carl runs the words Anti-Gravity Fun Launcher into the Anagram Decoder and calls Major Monogram about it and says "Evil Fanatic Hunt R Raygun". When they check the source it shows it's from Phineas and Ferb, and Carl thinks that they work for Doofenshmirtz. Major Monogram thinks it's impossible but when Carl plays Phineas' voice by playing it backward and adjusting the syllables, they think that the boys' plan is to help Doofenshmirtz to destroy the Tri-State Area. They decide to keep an eye on them, but first Major Monogram sends Agent P to find a missing agent, codename Agent G, and gives him some locations in Iceland, Monte Carlo, Burbank, California and on the Moon. As Agent P leaves, Carl ask who Agent G is. Monogram states that is Gary the Gander (or Goose) is all a wild goose chase to distract Agent P, since he's too close to Phineas and Ferb. Carl asks who will investigate them, but Monogram says since that every agent is on a mission, he decides to choose Carl. After trying on different costumes, Carl is dispatched to his mission.

In the backyard, Phineas and Ferb, along with Isabella and Baljeet, are already building the Anti-Gravity Fun Launcher, when Phineas wonders where Perry is. Meanwhile, Agent P is climbing some snowy mountain to search for Agent G. Carl arrives at the backyard, where Major Monogram tells him to observe and infiltrate them. Isabella asks who the guy at the fence is, then Phineas asks Carl who he is. Carl tries to think some other name, but accidentally says his own name. Phineas welcomes him and asks if he can help and Carl agrees. He started to question each of them while constructing the Anti-Gravity Fun Launcher. After finishing the Anti-Gravity Fun Launcher, they try to decide who goes first and Isabella insists that Carl should go first. Carl goes in and activates the Anti-Gravity Fun Launcher, then everyone joins in. Carl asks if this has to do anything evil, but Phineas states that this is all for fun. Carl, along with the kids, are having fun when Candace sees them flying in mid-air and decides to find her Mom immediately. Meanwhile, Monogram tries to contact Carl, but just hears him screaming. Thinking that the intern is being tortured, Monogram quickly declares an emergency.

Outside at Doofenshmirtz Evil Incorporated, Doofenshmirtz thanks Norm for helping him and is happy that the Anti-Gravity Evil Launchinator runs on solar power. Unfortunately, a police officer gives him a ticket for parking the Anti-Gravity Evil Launchinator in a no parking zone and then quickly tows away his device. He chases after it. At Monte Carlo, Agent P is playing blackjack with a guy, until he shows the picture of Gary the Gander. After the guy says he knows nothing, Agent P attacks and interrogates him. After having fun in the Anti-Gravity Fun Launcher, the kids meet Major Monogram acting as Carl's father. Monogram asks Carl what he's doing since he never came "home." Carl plays along as his son, telling his "dad" he was having fun with his new friends, and whispers to him that the situation is neutralized. Major Monogram quickly calls his men to abort the mission and leave the area. Monogram tells Carl that they should go home now, and says goodbye to the kids. After Monogram and Carl left, Phineas says he's a nice kid and tells everyone to race inside the house that the loser will clean up the Anti-Gravity Fun Launcher.

Meanwhile, Doofenshmirtz tries to catch his Anti-Gravity Evil Launchinator but trips over a can after seeing another Anti-Gravity Evil Launchinator; he decides to call Norm to come and pick it up. In California, Agent P was a special guest on a TV show and his face was pixelated to cover his identity. Agent P shows the picture of Agent G and the host tells the viewers if that they sees Agent G they should call in immediately. Agent P quickly picks up the call and runs off while the host tells him that he forgot his pixelation. Back at Doofenshmirtz, he watches as Norm picks up the Anti-Gravity Fun Launcher and states he didn't know Norm could do that. Norm shows him that he can transform into a vehicle as well, to which Doofenshmirtz responds that he should read his instruction manual and Norm says he should. As they leave, Candace, along with her Mom, arrives at their home, telling her about the Anti-Gravity Fun Launcher. Candace is surprised that it is gone, but Linda doesn't find it surprising. Doofenshmirtz congratulates Norm and tells him that he's gonna finish his Popsicle-stick bride. However, they are then stopped by the police officer who this time gives Doofenshmirtz a ticket for driving a robot with more than two axles without a license. The officer then tows Norm away, while Doofenshmirtz curses the Motor-vehicle Code.

Back at O.W.C.A, Monogram is so proud of Carl for his effort that he gives him a gold star in Initiative on his evaluation report. Perry suddenly arrives in a space suit and Major Monogram apologizes to him about the wild goose chase also, since they can't find Agent G because he was gone for too long. Agent P shows them Agent G, that he was on vacation. Monogram decides that Agent P deserves the vacation, but since evil never rests, that he will be back tomorrow. Monogram salutes him. After an awkward silence, Major Monogram comments that his arm is getting tired and Agent P is not saluting back.




  • Doofenshmirtz's tongue starts off as blue then stays red.
  • When the truck takes away the Launchinator it was still gray but when Doofensmirtz was running past the Flynn-Fletcher house, the -inator was red.
  • When Carl gets thrown the frisbee, he throws the frisbee; yet, in the next scene, the frisbee is gone.
  • It is impossible for Carl to disguise himself as a bunny because the bunny is so small but it could be possible it's a robot or a bunny named Carl.
  • When Perry is wearing his spacesuit, his eyes are blue instead of brown.
  • Carl's cap/head went through Phineas and Ferb when they are levitating.
  • When Doofenshmirtz says that the invention is now his (because he changed the name), he shows the blueprint to the audience. He flips it, so the blueprint should've been upside down when he looked at it.
  • Since the tree is not an apple tree, an apple should not have fallen out of it.
  • Carl's communication watch appears and disappears throughout the episode.
  • When Phineas is talking with Baljeet on the telephone, Ferb's button on his clothes disappeared.



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Animated Productions: Phineas and FerbVideographyTake Two with Phineas and FerbPhineas and Ferb the Movie: Across the 2nd DimensionPhineas and Ferb the Movie: Candace Against the UniverseChibi Tiny Tales

Video Games: Phineas and FerbPhineas and Ferb Ride AgainDisney Channel All Star PartyPhineas and Ferb: Across the 2nd DimensionAgent P Strikes BackPhineas and Ferb: Quest for Cool StuffWhere's My Perry?Disney Infinity (2.0) (3.0) • Phineas and Ferb: Day of DoofenshmirtzWhere's My Summer?Where's My Valentine?Where's My Holiday?
Albums: Phineas and FerbPhineas and Ferb Holiday FavoritesPhineas and Ferb: Across the 1st and 2nd DimensionsPhineas and Ferb: Star Wars soundtrack
Stage shows: Phineas and Ferb: The Best LIVE Tour Ever!

Disney Parks
Agent P's World Showcase Adventure

Entertainment: Phineas and Ferb's Rockin' Rollin' Dance Party
Firework: Celebrate the Magic Parade: Move It! Shake It! MousekeDance It! Street Party

Major Characters: Phineas FlynnFerb FletcherCandace FlynnPerryDr. Heinz Doofenshmirtz

Secondary Characters: Linda Flynn-FletcherLawrence FletcherIsabella Garcia-ShapiroBaljeet TjinderBuford Van StommMajor Francis MonogramJeremy JohnsonCarl KarlStacy HiranoGinger HiranoMillyKatieHollyAdyson SweetwaterGretchenVanessa Doofenshmirtz
Recurring characters: Giant Floating Baby HeadDjango BrownColtraneCharlene DoofenshmirtzRoger DoofenshmirtzVivian Garcia-ShapiroIrvingJenny BrownSuzy Johnson Nana Shapiro• • DannyBobbi FabulousShermanMeapMitchNormClyde FlynnBetty Jo FlynnPinkyAlbertPeterKlimpaloonTalking ZebraMonty MonogramHildegard JohnsonReginald FletcherWinifred FletcherAloyse von Roddenstein
Minor Characters: JerryBigfootYetiKhaka Peu PeuThe RegurgitatorBob WebberPrincess BaldegundeMelissaUnnamed Fireside GirlsAgent EBrobotsDrill SergeantBuck BuckersonTiana WebberJack JohnsonMrs. JohnsonWendyEliza FletcherNicoletteMandyThaddeus and ThorMindyAmandaLucy FletcherAdrian FletcherBeppo BrownDr. HiranoAnnabelle JohnsonSaraBrigitte, Josette, and ColletteMishti PatelLiam McCrackenRodrigoMorgGlenda WilkinsDr. GevaarlijkHeinz Doofenshmirtz's motherBlanca DishonProfessor PoofenplotzEliza M. FeyersiedLyla LolliberryBalloony • Corn Colossus • Professor Parenthesis
Guest Characters: Santa ClausKim Possible PinocchioBaby BaboonThor OdinsonSpider-ManHulkIron ManRed SkullNick FuryVenomWhiplashMODOK

Season One: "Rollercoaster" • "Candace Loses Her Head" • "The Fast and the Phineas" • "Lawn Gnome Beach Party of Terror" • "The Magnificent Few" • "S'Winter" • "Are You My Mummy?" • "Flop Starz" • "Raging Bully" • "Lights, Candace, Action!" • "Get That Bigfoot Outta My Face!" • "Tree to Get Ready" • "It's About Time!" • "Jerk De Soleil" • "Toy to the World" • "One Good Scare Ought to Do It!" • "A Hard Day's Knight" • "I, Brobot" • "Mom's Birthday" • "Journey to the Center of Candace" • "Run Away Runway" • "I Scream, You Scream" • "It's a Mud, Mud, Mud, Mud World" • "The Ballad of Badbeard" • "Dude, We're Getting the Band Back Together" • "Ready for the Bettys" • "The Flying Fishmonger" • "Phineas and Ferb Get Busted!" • "Greece Lightning" • "Leave the Busting to Us!" • "Crack That Whip" • "The Best Lazy Day Ever" • "Boyfriend From 27,000 B.C." • "Voyage to the Bottom of Buford" • "Put That Putter Away" • "Does This Duckbill Make Me Look Fat?" • "Traffic Cam Caper" • "Bowl-R-Ama Drama" • "The Monster of Phineas-n-Ferbenstein" • "Oil on Candace" • "Unfair Science Fair" • "Unfair Science Fair Redux (Another Story)" • "Out to Launch" • "Got Game?" • "Comet Kermillian" • "Out of Toon" • "Hail Doofania!"

Season Two: "The Lake Nose Monster" • "Interview With a Platypus" • "Tip of the Day" • "Attack of the 50 Foot Sister" • "Backyard Aquarium" • "Day of the Living Gelatin" • "Elementary My Dear Stacy" • "Don't Even Blink" • "Chez Platypus" • "Perry Lays an Egg" • "Gaming the System" • "The Chronicles of Meap" • "Thaddeus and Thor" • "De Plane! De Plane!" • "Let's Take a Quiz" • "At the Car Wash" • "Oh, There You Are, Perry" • "Swiss Family Phineas" • "Hide and Seek" • "That Sinking Feeling" • "The Baljeatles" • "Vanessassary Roughness" • "No More Bunny Business" • "Spa Day" • "Phineas and Ferb's Quantum Boogaloo" • "Phineas and Ferb Musical Cliptastic Countdown" • "Bubble Boys" • "Isabella and the Temple of Sap" • "Cheer Up Candace" • "Fireside Girl Jamboree" • "The Bully Code" • "Finding Mary McGuffin" • "Picture This" • "Nerdy Dancin'" • "What Do It Do?" • "Atlantis" • "Phineas and Ferb Christmas Vacation!" • "Just Passing Through" • "Candace's Big Day" • "I Was a Middle Aged Robot" • "Suddenly Suzy" • "Undercover Carl" • "Hip Hip Parade" • "Invasion of the Ferb Snatchers" • "Ain't No Kiddie Ride" • "Not Phineas and Ferb" • "Phineas and Ferb-Busters!" • "The Lizard Whisperer" • "Robot Rodeo" • "The Beak" • "She's the Mayor" • "The Lemonade Stand" • "Phineas and Ferb Hawaiian Vacation" • "Summer Belongs to You!" • "Nerds of a Feather" • "Wizard of Odd" • "We Call it Maze" • "Ladies and Gentlemen, Meet Max Modem!" • "The Secret of Success" • "The Doof Side of the Moon" • "Split Personality" • "Brain Drain" • "Rollercoaster: The Musical!" • "Make Play" • "Candace Gets Busted"
Season Three: "The Great Indoors" • "Canderemy" • "Run, Candace, Run" • "Last Train to Bustville" • "Phineas' Birthday Clip-O-Rama!" • "The Belly of the Beast" • "Moon Farm" • "Ask a Foolish Question" • "Misperceived Monotreme" • "Candace Disconnected" • "Magic Carpet Ride" • "Bad Hair Day" • "Meatloaf Surprise" • "Phineas and Ferb Interrupted" • "A Real Boy" • "Mommy Can You Hear Me?" • "Road Trip" • "Tour de Ferb" • "Skiddley Whiffers" • "My Fair Goalie" • "Bullseye!" • "That's the Spirit" • "The Curse of Candace" • "Escape from Phineas Tower" • "Lotsa Latkes" • "Ferb Latin" • "A Phineas and Ferb Family Christmas" • "Tri-Stone Area" • "Doof Dynasty" • "Excaliferb" • "Phineas and Ferb and the Temple of Juatchadoon" • "Monster from the Id" • "Gi-Ants" • "The Remains of the Platypus" • "Mom's in the House" • "Perry the Actorpus" • "Let's Bounce" • "Bully Bromance Break Up" • "Quietest Day Ever" • "Doonkleberry Imperative" • "Meapless in Seattle" • "Delivery of Destiny" • "Buford Confidential" • "The Mom Attractor" • "Cranius Maximus" • "Agent Doof" • "Minor Monogram" • "What a Croc!" • "Sleepwalk Surprise" • "Sci-Fi Pie Fly" • "Sipping with the Enemy" • "Tri-State Treasure: Boot of Secrets" • "Doofapus" • "Norm Unleashed" • "Where's Perry?" • "Ferb TV" • "When Worlds Collide" • "What'd I Miss?" • "Road to Danville" • "This is Your Backstory" • "Blackout!"
Season Four: "For Your Ice Only " • "Happy New Year!" • "Fly On the Wall" • "Bully Bust" • "My Sweet Ride" • "Der Kinderlumper" • "Sidetracked" • "Primal Perry" • "Mind Share" • "Backyard Hodge Podge" • "Bee Day" • "Bee Story" • "Great Balls of Water" • "Where's Pinky?" • "Phineas and Ferb Musical Cliptastic Countdown Hosted by Kelly Osbourne" • "Knot My Problem" • "Just Desserts" • "La Candace-Cabra" • "Happy Birthday, Isabella" • "Love at First Byte" • "One Good Turn" • "Mission Marvel" • "Thanks But No Thanks" • "Troy Story" • "Druselsteinoween" • "Terrifying Tri-State Trilogy of Terror" • "Face Your Fear" • "Cheers for Fears" • "Steampunx" • "Just Our Luck" • "Return Policy" • "Live and Let Drive" • "Phineas and Ferb Save Summer" • "Father's Day" • "Imperfect Storm" • "The Return of the Rogue Rabbit" • "It's No Picnic" • "The Klimpaloon Ultimatum" • "Operation Crumb Cake" • "Mandace" • "Phineas and Ferb: Star Wars" • "Lost in Danville" • "The Inator Method" • "Night of the Living Pharmacists" • "Tales from the Resistance: Back to the 2nd Dimension" • "Doof 101" • "Act Your Age" • "Last Day of Summer" • "O.W.C.A. Files"

Locations at or near Danville: DanvilleSeattleMr. Slushy FranchiseDoofenshmirtz Evil IncorporatedFlynn-Fletcher HouseAtlantisGoogolplex MallOld Abandoned Amusement Park

Other: AfricaEnglandNew York CityBig BenMarsTokyoLondonChinaIndiaCanadaChileHawaii

Today is Gonna Be a Great DaySummer Belongs to YouCity of LoveJump Right InPerry the Platypus ThemePerry Saves ChristmasLet it Snow, Let it Snow, Let it SnowGitchee Gitchee GooWhere Did We Go Wrong?BustedLittle BrothersWhat'cha Doin?Carpe DiemS.I.M.P. (Squirrels In My Pants)I'm MeRollercoasterCouldn't Kick My Way Into Her HeartThe Ballad of KlimpaloonEvil for Extra CreditBackyard BeachHappy New YearGreat to Be a BabyWhat Might Have BeenSerious FunCurtain Call/Time Spent TogetherFollow the SunSilhouettes