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"The Monster of Phineas-n-Ferbenstein" is the first half of the 22nd episode of Disney Channel original animated television series Phineas and Ferb, originally broadcast on Disney Channel on October 17th, 2008, Toon Disney on May 11, 2008, and Disney XD on February 16, 2009.


The opening of the episode.

On a stage, Phineas and Ferb are wearing tuxedos. Phineas warns the viewers that the following program may scare or even horrify them, to which Ferb follows by spewing a hairball. "You've been warned.", Phineas finishes, before a giant title of the episode smashes into the ground.

Now, with rain pouring down in front of the Flynn-Fletcher house, Phineas is downtrodden and tells Ferb that they can't do their plan to stand alone in a field with a metal pole. Sitting back down, Phineas queries where Perry is, and cut to him in his lair, Major Monogram appearing in the same fashion as the boys did in the beginning. He tells him that this mission may terrify him, but it probably won't since he's been doing this for a while. He then explains that the tarp behind him is because of water damage, and then worries about the time, rushing to go to his cousin's wedding after telling Perry to stop Doofenshmirtz.

"Would you hold it down, I am trying to use the quill!"

Back at the Flynn-Fletcher house, Grandpa Reg gets reminded of the story of Ferb's ancestor, Ferbgor. It cuts to a flashback, a gray tinted Victorian-age village, where Ferbgor and Dr. Phineastein collect a spare part from a "semi aquatic mammal." Then they spot a poster for the "Best Monster Contest", and Phineastein knows what they're going to do today. Heading back to the castle, Candace asks if the story could be in color, to which Phineas adds "how about muted color." Reginald says who's telling this story, and then gets back to it. He then shows us Constance, their disproving castle governess, who is writing with her quill. She then yells at them to keep it down, and then the boys hide after bringing a giant Platypus monster to life. After laughing maniacally, Phineastein notes that it's really big. Phineas asks Reg how big, to which he responds by saying "Bigger than a refrigerator, but smaller than a really big refrigerator."

Also in the present, Perry enters at Doofenshmirtz Evil Incorporated, but is yelled at by Doofenshmirtz to keep it open. It's too late, so Dr. Doofenshmirtz tells him how the storm made his security system go haywire. To pass the time, he tells Perry the story of his ancestor, Jekyll Doofenshmirtz. In the flashback (looking exactly like Reg's and in the same place and time), Dr. Jekyll Doofenshmirtz is working on a machine, when his butler, Jameson, tells him the Angry Mob is here (Doofenshmirtz explained that to be truly evil back then, you had to have your own evil mob after you). Since it's early, the Mob must sit in the lounge. After a little while, Jekyll comes up to them and shows them his newest invention: The Concoction Brew-inator! He uses it to create a cup of some liquid, and then drinks it. To his surprise, instead of a giant evil monster, he becomes a small fairy princess. He tries to get them to stay, but they leave anyway, laughing.

Dr. Phineastein shows Ferbgor their Platypus monster for the Monster Contest.

Back with Reg's story, he goes on to explain that the boys were preparing the monster for the big night. Phineastein demonstrates to Ferbgor that he taught him to "play dead," and Constance storms down after having enough of the noise. Once down there, Phineastein explains that they're entering the Monster Contest, and Constance says they don't even have a monster. The Monster then chatters behind her, and she screams and tells them that she's telling Mob. She bicycles down to the Mob, and tells them that the boys have made a monster.

Dr. Jekyll Doofenshmirtz's rampage.

Back in Doofenshmirtz's story, Dr. Jekyll Doofenshmirtz explains to Jameson that the reason he turned into the Fairy Princess is because he accidentally had it on that dial. He fixes it and drinks the right one, becoming a giant Hyde-like monster. He then goes on an evil rampage around the village. At the end of it, he storms over to the boy's castle, actually "getting the nose" of the Platypus monster, who chases after him angrily. The boys must go after him and get him back. The monster chases him all through the village, as the boys look in places like a cave.

The Monster's rampage.

The monster comes over to an Isabella lookalike, while Constance tries to get the Mob to go to Monster Contest where she's sure the boys are. The boys run into the Isabella lookalike who tells them the monster was at the Monster Contest. The boys then go to the contest. At the contest, Dr. Jekyll Doofenshmirtz escapes from the monster, or so he thinks, but then it sees him and starts pounding him violently. Back in the present, Doofenshmirtz tells Perry he forgets what happens after that, just as the lights come back on. He then tells him that he doesn't have time to do his evil scheme right now as he has a chiropractor's appointment, and suggests doing it tomorrow.

In the past, Phineastein and Ferbgor have found The Monster at the contest (who coughs up a wand) just in time for the winner to be announced. The winner is Constance, who has just turned into a Hyde-like monster after accidentally drinking the brew. Phineastein tells the Isabella lookalike that they're never going to lose the monster again, and Reginald ends the story by saying, "And that is why there are pumpkins." Confused, Phineas tells him he was just telling them a giant platypus-monster story, to which Reg says that sounds like a good story. Phineas sighs, and as the lights turn on, he asks Ferb if he has anything to say. He responds with, "Platypus monsters are the only monsters to lay eggs."




Candace's animation error

  • Right before Grandpa Reg says "This weather isn't fit for man or platypus.", there is a serious animation error on Candace. For at least half a second she has four arms, two by her side and two on the back of Ferb's chair, and she has two torsos, one leading to nothing.
  • When Constance enters the door changes from a wide opening to a simple door.
  • When Constance drinks the potion, her clothes don't rip when she grows instead they grow with her unlike Dr.Jekyll Doofenshmirtz.
  • When Dr. Jekyll Doofenshmirtz drinks the potion at the Monster's Ball the Concoction Brewinator has two dials. One pointing to the evil monster and one pointing to the Fairy Princess.
  • Dr. Jekyll Doofenshmirtz in fairy princess form drops his wand when the Platypus Monster grabs him. But, after the Platypus Monster eats him, he coughs out the wand.
  • When Dr. Jekyll Doofenshmirtz knocks on Phineastein and Ferbgor's door and the Platypus Monster opens the door the shadow of the monster cannot be seen on the ground. But when Dr. Jekyll Doofenshmirtz runs away the shadow of the Platypus Monster can be seen.
  • When Constance was telling the mob that Phinenstein and Ferbgor created the Platypus Monster her eyes were the same as her skin.
  • The Isabella lookalike said that she had a PB and J on whole wheat with the platypus monster. However, peanuts are not indigenous to Europe, let alone Drusselstein. Peanuts were also primarily food for livestock until the 1930s.


  • Linda Flynn-Fletcher and Lawrence Fletcher didn't appear in this episode; however, they returned in the next episode, "Oil on Candace".
  • Isabella, Jeremy, and Roger aren't seen in the episode, but their lookalikes are seen in the back-story.
  • There are 2 Fourth wall breaks:
    • In the beginning, Phineas and Ferb are in front of a curtain and tells the audience that what they are about to see can scare, or even horrify them.
    • Candace asks Reginald to tell the story in color and Phineas in a muted color.
  • Ferb's line is a parody of what he first said in the series back in "Rollercoaster".
  • Constance's words written in the quill are what her counterpart, Candace, said in "Rollercoaster" and "The Magnificent Few". The line she yells at the boys are also from "Rollercoaster".
  • When the platypus monster walks into the Best Monster Contest, among the crowd is the Giant floating baby head that has been seen in "One Good Scare Ought to Do It!", "It's a Mud, Mud, Mud, Mud World", "Out of Toon" and other episodes.
  • This episode appears to take place immediately after or the day after the events of "The Flying Fishmonger".
  • The entire story of Phineastein and Ferbgor is a parody of Frankenstein, including the title. Also, the introduction to the episode is a direct parody of the introduction of the 1930s Universal film. Dr. Phineastein is a parody of Dr. Frankenstein and Ferbgor is a parody of Igor.
  • Doofenshmirtz's story is a parody of Dr. Jekyll and Mr. Hyde, including his ancestor's name.
  • The spelling of this show's title (Phineas-n-Ferbenstein) may be a reference to the character Dr. Frank-N-Furter from The Rocky Horror Picture Show.
  • The title care with the text in green and the castle is a parody of Young Frankenstein.
  • One of the monsters bears a striking resemblance to Jack Skellington in his scarecrow costume from the opening of the movie.


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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