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From now on, I'm going to be a good guy!

Heinz Doofenshmirtz

Agent Doof is a Season 3 episode of Phineas and Ferb.


Candace's plans to watch over Phineas and Ferb backfire, when Dr. Doofenshmirtz's "Babe-inator" turns her brothers into babies. After having an epiphany, Dr. Doofenshmirtz shows up at the OWCA to give up his evil ways. Agent P has no choice but to show Dr. Doofenshmirtz the ropes of the trade, but things quickly sour between the two after Dr. Doofenshmirtz accidentally exposes the identity of a fellow animal agent.

Episode Summary

Linda is heading to Vivian's aunt's sister's landlord's son's baby shower, and leaves Candace in charge, who tells Phineas and Ferb not to do anything while recording it. Agent P heads to his lair and surprise to sees Dr. Doofenshmirtz on the screen. Major Monogram says that he has turned to the good side and written the "I give up application" and since he was raised by ocelots it supposedly makes him an animal, but tells Agent P he needs to supervise him. Doofenshmirtz explains that he quit evil after trying to use his "Babe-inator", which he plans to turn his brother and the people into babies, and failed; Making him think that he's not good at being evil, which made him decide to be good and Agent P gives him his own cubicle.

Later it was revealed that even though the Babe-inator wasn't plugged in, Norm plugs it back while cleaning up the lair. The Babe-inator activates and it then hits Phineas and Ferb, turning them into babies. Thinking that Phineas and Ferb caused this to happen, Candace tries to take a photo of the two, who have now been turned into babies, and sends it to Linda successfully. However, she simply thinks it is a baby photo of then. Candace then attempts to take a photo of them with a newspaper, but Phineas throws her phone in a fountain and Ferb tears apart the newspaper. She decides to use a stroller and takes them to show her. Doofenshmitz, meanwhile, is in his cubicle checking the computer and finds out that Newton the Gnu is Agent Silent G and he blogs it. He then goes on a coffee break with the other agents and ignores the screen that warns a breaching security and agent captured.

Candace goes through the park and Phineas and Ferb start crying. They go to a store where Candace leaves them outside to get toys for them to quench their sadness while a robber arrives on his motorcycle and breaks into the store. The babies then use the motorcycle and hook it up to the stroller and escape, while Candace chases them and catches them while the robber is caught by the cops. Doofenshmirtz and Agent P are called to Monogram's office to hear that someone revealed Newton the Gnu's secret identity, and has been caught by his nemesis, Dr. Diminutive. He ordered Doofenshmirtz and Agent P to head out to save him. They takes the hover-jet and Doofenshmirtz presses a button that fires a missile, which accidentally destroys Monogram's car.

Doofenshmirtz and Agent P make it to the apartment where the agent is being held where Doofenshmirtz attempts to kick down the door but gets his foot stuck. Dr. Diminutive appears, who has Agent Silent G captured and now he catches them too with his Photon 2000 particle bubble-inator. Dr. Diminutive tells them that he quickly learned Newton the Gnu's identity when Doofenshmirtz puts it in his blog. Candace chases the babies in a toy store and finally caught them.

Dr. Diminutive hangs them all off the edge of the apartment and drops them 40 stories up, but Agent P uses his grapple gun to catch the particle bubble-inator to trap Dr. Diminutive in a bubble and saves them by using it to create a bigger bubble, which they ride into and Doofenshmirtz taken them to safety and later crash into Monogram's office. Candace arrives at the baby shower but the boys are taken by the Fireside Girls who are helping out at the event.

Candace with babies

Linda and the Fireside Girls get turned into babies.

Back at the O.W.C.A, Monogram's office was being repaired and Monogram with an arm cast was forced to stay in a cubicle. Monogram congratulate Agent P for rescuing Agent Silent G and then fires Doofenshmirtz for numerous compliant in human resources. Doofenshmirtz blames the duck agent and tells him he does so much damage for being good that tells him to returns to evil after believing he is better off that way. He then calls Norm to polish off his -Inators and leaves, which Norm starts off with the Babe-inator and it hits Linda and the Fireside Girls (except for Holly and Adyson) thus turning them into babies while Candace is trying to explain to them that Phineas and Ferb have been turned into babies. She breaks the Fourth wall that she hopes it wears off before the next episode.


Running Gags

Ferb's Line

(Seeing Phineas and Ferb as babies)

Phineas: (Blows raspberry)

Ferb: (Babbles)

He also cries along with Baby Phineas.

Perry's entrance to his lair

He twists a board on the fence, turning it into a diving board. Then he dives into a baby pool, and the water floods into the lair, along with Perry.

Memorable Quotes

Candace: (After she puts baby Phineas and Ferb in a stroller) That's it, go right to sleep. You'll be busted in just a little bit.
Francis "Major" Monogram: Enter. Agent P, we have a situation.

Heinz Doofenshmirtz: Is this about that grape joke? Who told on me? Was it the duck?!
Major Monogram: That's not why I called you in. Get a look at this! This is Newton the Gnu. He was assigned to Dr. Diminutive, but it appears that some bonehead blew his cover on the blogosphere. We still haven't found out who it was. In the meantime, We need you to bring him in. Get on it, Agent P! Oh, and, uh, take Doofenshmirtz with you.
Doofenshmirtz: A ride-along? Sweet! I can wear my new fedora!
Major Monogram: Get out of here! (Doofenshmirtz and Perry leave, then Carl is seen with a mail cart) Carl, get in here! When you're done delivering the mail, I want you to wash and wax my car. You know, a little wax on, wax off? It'll teach you karate.

Carl: No, it won't.
Doofenshmirtz: Sweet, we're like a pair, like Jack and Jill, or Alice in Wonderland! And with a super-cool vehicle!

Major Monogram: Be careful out there. Washing my car. Don't scratch it.
Doofenshmirtz: Ooh, look at all these neat buttons! Hey, what does this one do? (he presses a button, which launches a missile) Whoa! Oh yeah, this is way cool!
(The missile hits Major Monogram's car and blows it up)

Major Monogram: DOOFENSHMIRTZ!
Robber: Suckers! (laughs) Oh, my bike. (the police show up) Oh, good the cops are here! Maybe they can report this vandalism to--

Police: (in megaphone) PUT YOUR HANDS UP!

Robber: Oh, that's right.
Major Monogram: It's humiliating! I have to sit in this crummy little cubicle while my office gets repaired! Anyway, Agent P, due to your quick action and decisive thinking, you were able to rescue Newton the Gnu. Doofenshmirtz, you're fired.

Doofenshmirtz: Is it because I blew up your car?
Major Monogram: No, it's because I have a list of complaints from Human Resources.
Doofenshmirtz: So, it was the duck!
(Doofenshmirtz, dog agent and crocodile agent look at the duck agent as he backs away in his chair)
Major Monogram: Let's face it. You've done more damage inside the agency than you ever did outside.

Doofenshmirtz: So what you're saying is that I'm good at being evil after all! (calls Norm) Norm, dust off the old inators! We're back in business! (hangs up, brief pause) Later, chumps!
Candace: Okay, I get it, lesson learned. Toddlers aren't easy. The irony is not lost in me! A little help here? This had better wear off before the next episode.

Background Information

  • Dr. Diminutive has his own nemesis named Newton the Gnu a.k.a. Agent Silent G.
  • First time Isabella and the Fireside Girls (except Holly and Adyson Sweetwater) are seen as infants.
  • Candace breaks the fourth wall at the end.
  • Major Monogram's car is a black sedan.
  • Like Phineas, Dr. Doofenshmirtz also scratches his ear when lying/covering up a lie.
  • It is never explained what happened to Phineas, Ferb, Linda, Isabella, and the Firside Girls at the end of this episode. It's possible that the Babe-inator zapped them again, turnin them back into their normal selves.
  • Doofenshmirtz says that 2000 is 4000 days ago. 4000 days is equal to 10.95 years, so this episode takes place in 2010 or 2011.
  • First time Ferb is seen as a baby.
  • Ferb was revealed to be adopted when he was about 5 or 6 in "Phineas and Ferb Get Busted!" and "Phineas and Ferb The Movie: Across the 2nd Dimension."
  • This episode reveals that the characters in Phineas and Ferb are aware that they are being filmed during each episode.
  • If one listens closely, Doofenshmirtz can be heard saying "spoilsport" before Major Monogram tells Agent P that Doofenshmirtz has joined the O.W.C.A.

Production Information

International Premieres

  • March 26, 2012 (Disney XD Canada)
  • April 19, 2012 (Disney Channel Spain and Portugal)
  • May 10, 2012 (Disney Channel Latin America, On Demand)
  • May 21, 2012 (Disney XD UK)
  • June 16, 2012 (Channel 13 Chile)
  • July 7, 2012 (Disney XD Poland)
  • July 24, 2012 (Disney Channel Brazil)


  • Before Isabella was hit with the Babe-inator, she was wearing her Fireside outfit, but after she was hit, she switches to her regular pink outfit.
  • Some of the Fireside Girls have their sashes on their right shoulders instead of their left before and after getting affected by the Baby-inator.
  • During the end of the episode when all the agents were fixing the agency you can see that there are two pig agents. One is the regular one wearing a fedora and another one is seen wearing a hardhat. This could mean that the agency might employ more than one agent of the same species.
  • When Carl is washing Monogram's car, a handicap spot marker can be seen on the ground in the space above the car. When Doofenshmirtz blows up the car, the handicap space marker is gone.
  • During one part of "Great to Be a Baby", Phineas, Ferb, and Candace can be seen in their own house, despite being in the store before, for most of, and after the song. They also appear to be in Isabella's kitchen in one shot.
  • Linda should've gotten a little suspicious when she saw the picture of Phineas and Ferb as babies because they didn't meet each other until they were at least 5 years old as seen in "Phineas and Ferb Get Busted!" and "Phineas and Ferb The Movie: Across the 2nd Dimension". (Maybe Linda thought it was a montage.)
  • The sign said "Danny The Dinosaur's Baby Stuff Emporium," but Danny looked like a dragon, not a dinosaur.
  • Candace was eating health squares that looked like cylinders.
  • If Perry jumped through the hologram of Dr. Diminutive, Dr. Diminutive shouldn't have been able to open the door to them.
  • Gretchen's eyes were open at the end.



  • The Karate Kid - Monogram tells Carl washing his car will teach him karate, which is what Mr. Miyagi tells Daniel in this film.
  • Rugrats - Phineas and Ferb pull tools out of their diapers similar to how Tommy Pickles always has a toy screwdriver in his.
  • Fairly OddParents - Major Monogram yells "Doofensmirtz!" similar to how Timmy Turner's dad yells "Dinkleberg!" in many episodes.
  • Adventures in Odyssey - Monogram says "Wax on, Wax off" to Carl, similar to what the Coach tells Vance about cleaning lockers during his detention a pt the end of The Owlnapping.
  • Rugrats - Phineas and Ferb pull tools out of their diapers similar to how Tommy Pickles always has a toy screwdriver in his.
  • Happy Hallow Park & Zoo - Danny the Dinosaur is nearly identical to the San Jose children's park/zoo mascot.
  • Discover Card Commercial - The tune of the end of Great to Be a Baby is similar to the tune of the commercial.
  • Monsters vs. Aliens - Doofenshmirtz says he's gonna put a poster of a kitten that says "Hang in there!" in his cubical. There is a similar poster in Susan's cell in the government prison in the movie.
  • Garfield - Major Monogram yells "Doofensmirtz!" similar to how Jon yells "Garfield!!" after Garfield has done something bad.
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