1 - 20 of 95 Works in Monty Monogram
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Six years ago, Candace's life crumbled. An unplanned pregnancy, the loss of a loved one, and disapproval — she endured it all, raising her son, whose father remained a mystery. Now, she had built a life and career, but her heart felt hollow. That is, until Vanessa introduced her to her father. Dr. Doofenshmirtz, now a not evil-scientist, wasn't the eccentric loner she expected. Instead, he was a man whose warmth and tenderness toward her and son stirred something deep within her. But why did a man who didn't like children turn out to be so nice to Candace's son?
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When Vanessa starts her OWCA internship she is surprised to learn of the fearsome reputation surrounding her father’s former nemesis. And once she is assigned to become Perry’s personal assistant, she decides she wants to know more about him beforehand.
But trying to stitch together the pieces of Perry’s double life turns out to be more difficult than she had expected, especially since neither OWCA nor the Flynn-Fletchers seem to know his full story
Series
- Part 2 of BBS: Big Brother Spy
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Perry used to have a double life, as a secret agent and a pet platypus but now... He has a third one as his arch nemesis's human lover.
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The Most Pleasureful Time Of The Year by ByletheaFanatic32, UltimateWarriorFan4Ever
Fandoms: Phineas and Ferb
26 Dec 2025
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Monty Monogram is busy spending his first Christmas with his girlfriend, Vanessa Doofenshmirtz. But Vanessa, and strange enough, her own mother have plans regarding Monty's... presents. And this results in a Christmas that Monty is gonna remember for a long time. Co-written by me and ByletheaFanatic32. A late Christmas gift written for The Amazing Ghost Musician.
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Agent T from the 2nd Dimension by Haqi
Fandoms: Phineas and Ferb, Phineas and Ferb the Movie: Across the 2nd Dimension (2011)
26 Dec 2025
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2 weeks after the eternal night. Stacy is struggling to balance her social life with her spy life, she then comes face to metal face with herself (literally)
Series
- Part 3 of Tales of Agent T
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Believing that everything in his life could be fixed if he had only become class president in High School, Heinz Doofenshmirtz uses his past invention, the De-Age-inator, to become 18 years old again and quickly enrolls in Danville High. However, in the high school political arena, Doof faces fierce competition from his opponent, a girl named Candace Flynn, whom smells something fishy about the new "exchange student" and soon sets out to bust him!
When the two are paired as soccer rivals and then lab partners, though, their mutual understanding soon works against them and turns their fierce rivalry into something neither of them expected.
Heinz now has to ask himself if he's evil enough to take his daughter's friend to the prom before taking over the Tri-State area, while Candace has to answer, once she gets the evidence she craved, if she's prepared to bust someone she's fallen in love with? And if she'll really be okay this time when everything disappears.
It seems neither teenagehood nor middle agedness is all it's cracked up to be.
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The Backyard Gang helps Santa deliver the gifts to the children of the world on Christmas night. Doof plans to crash the Christmas party Vanessa is attending, only problem is it's in the Flynn-Flecter's house. Perry must try to stop him while avoiding Candace, who is hosting this Snow Ball.
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When a mysterious rift threatens the fabric of time itself, Perry the Platypus is critically injured while protecting both the Tri-State Area and his secret identity. As OWCA scrambles to stabilize him and contain growing dimensional chaos, Phineas and Ferb struggle with their pet’s sudden disappearance. While their summer slows to a standstill, Stacey—now reluctantly pulled into OWCA as a temporary operative—must keep Perry’s secret and support her heartbroken best friend Candace, who begins to unravel under the pressure of watching her brothers lose their spark.
Meanwhile, Doofenshmirtz confronts his past while attempting to help the former-nemesis who has helped him countless times. With the help of the 2nd Dimension Resistance crew, OWCA races to uncover the truth behind the worsening rift crisis and save not only Perry but the entire Tri-State Area.
As timelines fray and bonds are tested, Perry must fight to recover, protect the boys he loves, and remind everyone what truly holds the multiverse together: loyalty, found family, and the quiet strength of a platypus who never gives up.
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This story takes place in an alternate universe, where Stacy recognize Monogram's voice and Carl's name, which lead to Candace finding out about Perry's secret spy job and discover the Secrets of the Mysterious Force
I just watched the episode "Entrance Exam", and it was great. Though if it had changed the formula a little bit, it would've been better.
Okay just hear me out, what if Monogram pressed the wrong button and let in two teenage girls in the lair.Now because Phineas and Ferb are gonna go on hiatus again i figured i'd try a long fanfic to still enjoy the story.
If you haven't watch the episode yet i highly recommend you watch it first.
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I was very captivated by the new episode i just watched, “Dooflicated,” a great epiosde that lasted 11 minutes showing the gang turned evil and Candace has to stop them, the stakes were high but not that much.
So, what if it has higher stakes?
This is that story, which was originally going to be a standalone two-shot but I now plan for it to be longer like 22 minutes, also i'm adding some more characters we didn't get to see. -
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O.W.C.A. may have taken a big hit, but they're not done yet. Time for some secret agenting, teamwork, and maybe - just maybe - a change of sides for a certain chihuahua?
Series
- Part 62 of Perry and Peter: BFFs
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Perry Loves All His Kids, No Really, He Does by Hullo_Earlgrey
Fandoms: Phineas and Ferb
04 Oct 2025
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Perry has a lot of children in his life and he loves all of them.
Series
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it started with a whisper (everybody talks, everybody talks) by lemonpiecat
Fandoms: Phineas and Ferb
27 Sep 2025
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Perry and Heinz aren’t the textbook definition of nemesis. No matter how many times they refer to each other as such— it’s been a while since anyone who knew them would back them up on that.
The true nature of their relationship, however? Well, that depends on who you ask.
Or, whatever Perry and Heinz are, through the eyes of many, many bemused bystanders. -
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Of all the ways for Perry the platypus to become gruesomely injured to the point that his body sustained irreversible damage, playing with his boys in the front yard was not one of them.
After an unexpected accident puts OWCA's best Agent out of service, everyone surrounding him is forced to make major adjustments to their lives, especially Perry himself. -
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OWCA has been exposed to the public, LOVEMUFFIN is ready to take over the world again. Stacy is trying to keep her mom from forcing her to move back to japan, and Doof needs to remember where he puts his self destruct button.
Series
- Part 2 of Tales of Agent T
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Perry and Doof went missing in Canada. Stacy and Vanessa team up to find them with some help from Agent Lyla of COWCA to rescue them.
Series
- Part 1 of Tales of Agent T
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Perry agrees to watch the kids one night, but he quickly learns of an opportunity to rescue some baby animals.
This isn't going to end up changing his life, right?Series
- Part 55 of Perry and Peter: BFFs
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Conversations (NOT) to have In a Nedlington Nymph 10 lightyears from Earth by WherePlanetVenusHoldsSomeOfficeSpace (CureDigiQueen)
Fandoms: Phineas and Ferb
31 Aug 2025
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Though it had completely slipped Stacy's mind that tonight was the date night Candace had been planning for two weeks. Candace was taking Jeremy out for a fancy dinner and drive in return for all the times he had done the same for her, now that she also had both a license and disposable income.
In her defense the stress of being cornered by killer robots should have been more than a good enough excuse to explain her forgetting such a thing. -
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Role Reversal Au! (but just with the backyard group and candace’s friends)
Info:
Candace Flynn
Age: 12
Swapped With: Phineas FlynnStacy Hirano
Age: 12
Swapped With: Ferb FletcherJeremy Johnson
Age: 12
Swapped With: Isabella Garcia- ShapiroVanessa Doofenshmirtz
Age: 12
Swapped With: Buford Van StormmJenny Brown
Age: 12
Swapped With: Baljeet TijnderPhineas Flynn
Age: 15
Swapped With: Candace FlynnFerb Fletcher
Age: 16
Swapped With: Stacy Hirano (and kinda candace)Isabella Garcia-Shapiro
Age: 16
Swapped With: Jeremy JohnsonBaljeet Tjinder
Age: 15
Swapped With: Jenny BrownBuford Doofenshmirtz (Van Stomm)
Age: 16
Swapped With: Vanessa DoofenshmirtzSeries
- Part 1 of Phineas and Ferb- Role Reversal Au
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Summary
Carl's not himself.
A black eye, a hoodie drawn tight, and a silence that says more than words ever could.
At OWCA, protocol says don’t ask questions.
But loyalty says otherwise.Series
- Part 4 of Missions That Matter