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

— Heinz Doofenshmirtz

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 got surprised to see 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 got 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 do good and Agent P gives him his own cubicle.

Phineas and Ferb as babies.

Later it got 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 them. 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 take 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 of a security breach and an 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 gets caught by the cops.

Doofenshmirtz and Agent P got called to Monogram's office to hear that someone revealed Newton the Gnu's secret identity, and was 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-"erator". Dr. Diminutive tells them that he quickly learned Newton the Gnu's identity when Doofenshmirtz put it in his blog. Candace chases the babies in a toy store and finally catches them.

Dr. Diminutive hangs them all off the edge of the apartment and drops them 40 stories down, 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 got taken by the Fireside Girls who are helping out at the event.

Candace with a lot of babies of the kids and Linda.

Back at the O.W.C.A, Monogram's office was getting repairs and Monogram with an arm cast and had to stay in a cubicle. Monogram congratulates Agent P for rescuing Agent Silent G and then fires Doofenshmirtz for many complaints 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 Holly and Adyson) thus turning them into babies while Candace is trying to explain to them that Phineas and Ferb got turned into babies. She breaks the fourth wall and says that she hopes it wears off before the next episode.


Read the transcript of Agent Doof.



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Running Gags

I know what we're gonna do today!


Ferb's Line

(Seeing Phineas and Ferb as babies)

Phineas: (Blows raspberry)

Ferb: (Babbles)

He also cries along with baby Phineas.

Whatcha doin'?


Hey, where's Perry?

Candace: Okay you two, I'm in charge and I'm gonna lay down some ground rules!

Phineas: Okay, shoot!
Candace: No leaving the yard, no amusement park rides, no robots, no rocket ships...
Phineas: Ferb, are you getting all of this? (Ferb holds up a miniature tape recorder.) Cool. first edition issuing of commemorative coins, no asking where Perry is, no astrological planetary alignments...

Oh, there you are, Perry


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

Doofenshmirtz: Wow, my own cubicle. (Agent Kitty joins him and Perry) How nice! I'm gonna put a poster, right here, with a kitten that says, "Hang in there." (Doofenshmirtz turns and sees Agent Kitty; chuckles awkwardly) No offense. It's not like I think that's all you guys do, or anything. (Agent Kitty walks off) Oh, great, now he's going to Human Resources.
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.
Major Monogram: Enter. Agent P, we have a situation.

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: I am loving this! We're all like partners, now! Like Jack and Jill, or Alice and 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'm stuck in this crummy, little cubicle while my office gets repaired! Anyway, Agent P, due to your quick action and decisive action, you were able to rescue Agent Silent G. 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.
Doofenshmirz: 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.

Production Information

  • This is the third-longest an episode (along with "Phineas and Ferb and the Temple of Juatchadoon") which has had its segments air separately.
  • When this episode premiered on Disney Channel in the US, it got paired with "Minor Monogram", then later paired with its partner, "Phineas and Ferb and the Temple of Juatchadoon". For reasons unknown, it was later paired with "What A Croc!".
    • However, this episode was still paired with "Phineas and Ferb and the Temple of Juatchadoon" on Disney XD in the US.
  • This first aired on Disney XD on Demand Canada on March 26, 2012.
  • This first aired in Europe on Disney Channel Spain and Portugal on April 19, 2012.

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 and Unitel Bolivia)
  • July 7, 2012 (Disney XD Poland)
  • July 24, 2012 (Disney Channel Brazil)
  • August 13, 2012 (Disney Channel Latin America, Official Premiere)
  • September 14, 2012 (Family Channel)


Where's Adyson?

  • Adyson does not appear in the last scene of the episode, although she is also attending the baby shower party.
  • 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 Babe-inator.
  • During one part of "Here's Why It is Great to Be a Baby", Phineas, Ferb, and Candace were in their own house, despite being in the store before, for most of, and after the song. They also seem also to appear 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.
  • If Perry jumped through the hologram of Dr. Diminutive, Dr. Diminutive shouldn't have been able to open the door to them.
  • Candace was eating health squares but they were cylinders.
  • The sign said "Danny The Dinosaur's Baby Stuff Emporium," but Danny looked like a dragon, not a dinosaur.
  • After Katie got affected from the Babe-inator, her party hat turns orange.
  • The skin on Ginger's legs changed colors after she got hit with the Babe-inator.
  • When Carl is washing Monogram's car, a handicap spot marker was on the ground in the space above the car. When Doofenshmirtz blows up the car the handicap space marker is gone.
  • After Candace decides that she is going to buy them toys, when she places Ferb back down, the seat belt in his seat automatically appears without Candace putting it on.
  • When Candace took the photo of baby Phineas and Ferb, she should've included herself in the picture before sending it. Also, Linda should have remembered that Phineas and Ferb would not have any baby pictures together, since they are only step-siblings and did not know each other when they were babies.



  • The Hard Way - The partnership between Doof & Perry copied from relationships between Nick Lang & John Moss in the movie.
  • The Karate Kid - Monogram tells Carl washing his car will teach him karate, which is what Mr. Miyagi tells Daniel in this film.
  • Sky High - The Babe-inator is just like the Pacifier in the movie, Sky High which they can both turn people into babies.
  • 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 this episode's song is similar to the tune of the commercial.



designates a character that did not appear in this episode
"Cranius Maximus"
Episodes Next:
"Minor Monogram"
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