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Phineas and FERB: Tales of Ladybug and Chat Noir by Hasu132
Fandoms: Phineas and Ferb, Miraculous Ladybug
15 Feb 2026
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It was the begining of their first year in high school, when Phineas and Isabella each found a strange black and red box. This finding would turn them into Danville's newest superheroes: Ladybug and Chat Noir.
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A collection of one shots.
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Inventions, Mysteries, Amphibians, And Titans: A Chat Fic by Insecdroid, Orahm Xoorha (Insecdroid)
Fandoms: Phineas and Ferb, Gravity Falls, Amphibia (Cartoon), The Owl House (Cartoon)
15 Feb 2026
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June 1st, 2020. The day that six humans were brought together by an unknown benefactor to be a part of a multiversal chat. Except, all of them exist on the same earth. So why is it multiversal? Together they'll share in their adventures, have a laugh at the chaos the chat will create, and maybe disrupt the way the timeline was supposed to pan out.
AU with the Calamity Trio being capable of turning into their respective Amphibian, inspired by Medicated.
AU with Luz being a half-Titan, inspired by...a lot of other fan fics.This fic is inspired by Watching The Cipher-Verse by Mandalore_the_Atreides
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They’ve spent every summer side by side - inventing, exploring, daring the impossible. But as the summers pass, the games and inventions aren’t enough to distract Isabella from her crush any longer and she drifts away. And for the first time, Phineas is starting to wonder if what's he's feeling is more than just a friendship. While he chases after her, a string many near misses and miscommunication keeps them from being true to their emotions toward each other. Years pass and eventually time will run out.
Each chapter brings them closer to the moment where they perfectly align, all as they face the risk of growing up and missing their moment entirely. Each chapter takes story beats from previous episodes and creates a story arc answering some of the big questions that Act Your Age left behind. This story will bridge the gap between their legendary summer and Act Your Age.
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Phineas is personally delivering his Valentines to everyone's locker this year.
So why does he skip Isabella's?
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- Part 50 of Phinabella Multiverse
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Phineas Flynn is an outcast. His ideas are always seen as too big or dangerous or unrealistic. He doesn't have friends, everyone at school calls him weird. He comes home and his mom and sister always seem to be arguing. He's lonely in his too big room.
Ferb Fletcher is a boy genius. He can understand and follow plans at a level far above his level. He doesn't have any real friends, only people who think he's smart. He keeps up the perfect view because it makes it easier for dad. He's lonely and cramped in the tiny room he shares with his pet.
What happens when the two of them run into each other?
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Phineas has known about his crush on Isabella for quite some time now. It’s all he can think about. However, those thoughts become really troubling, especially around a certain time of night…
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Perry was planning to celebrate Valentine's Day for the first time with Heinz, but the mission ordered by Monogram ruined it. Or so he thought.
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For 26 long years, Perrin Fletcher was one of O.W.C.A.’s best. He was cold, precise, and (mostly) efficient, often taking care of the dirty work nobody else wanted to handle.
Now, he’s been thrown into a whole new world when his relocation requires him to be the fun, kind and loving uncle of the Flynn-Fletcher household. And, as if that wasn’t enough, he has an assigned nemesis to babysit, an overly-prepared assistant named Carl, a mayor to investigate, and…
…a plethora of other assignments and issues, because heaven forbid he catch a break.
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Heinz uncovers information that not only makes Perry question everything he's ever known about the O.W.C.A., but slowly causes him to lose all faith in the organization. Now the lines between good and evil are blurring, and Heinz can only watch as grief and betrayal send his sweet but stoic nemesis spiraling into something bitter.
To think, this all started with Heinz looking up fun facts about platypuses...
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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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Story Write-Aways (Stories for Adoption) by Holden1993
Fandoms: The Flash (TV 2014), Arrow (TV 2012), Harry Potter - J. K. Rowling, Phineas and Ferb, Supergirl (TV 2015), Best Friends Whenever (TV), Grey's Anatomy, Lab Rats (TV 2012)
13 Feb 2026
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Stuck on ideas? Use one of mine. All ideas up for adoption by any writer. Various fandoms include Supergirl, Arrow, Flash, NCIS, Harry Potter, and others.
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Desesperado por créditos universitarios, Phineas recluta al mentor menos calificado del mundo: Doofenshmirtz. Con Vanessa como su cínica socia y Perry evitando catástrofes desde las sombras, cada ridícula misión es solo un trámite hacia el verdadero examen final. Todo conduce a una fecha fatal donde, sin ninguna gracia, el calendario le arrebatará para siempre a quien debió amar ayer.
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Askbox Fic Collection: Perryshmirtz Adventures by KissingLizard
Fandoms: Phineas and Ferb
10 Feb 2026
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Collection of short-fics and Drabbles. I am taking suggestions and requests on my tumblr, these are them.
Chapter 1: Rockabye Perry
Chapter 2: Maybe we should kiss to break the tension? (Established Relationship)
Chapter 3: Well someone's cranky today (OWCA files au)
Chapter 4: Kiss in secrecy
Chapter 5: Enemies make the best lovers you know.
Chapter 6: An introduction to Space-Adventure! (Established Relationship)
Chapter 7: What a stud, right?
Chapter 8: You are under arrest
Chapter 9: Kick the shit out of Mother Doofenshmirtz (Established Relationship)
Chapter 10: Matchy-Matchy (season 5, episode 6A)
Chapter 11: Shnuki
Chapter 12: Grass Stained Knees
Chapter 13: Uncle Perry goes through Airport Security
Chapter 14: Should've put a ring on it (content warning)
Chapter 15: Second dimension Perry -
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Isabella did it. She finally did it. It was in the last week of September of her first year of high school, she finally worked up the courage to confess to Phineas. And not only did she finally say the words she had been wanting to say for years, but Phineas reciprocated those feelings...hey had been officially dating for two months now and she couldn’t be any more thrilled.
And she thought Phineas was too...
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After anesthesia, there are usually unexpected reactions to the outside world.
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Isabella doesn’t speak because she doesn’t want to lose Phineas.
He doesn’t either.
What if that’s what ends up tearing them apart?
What if a simple misunderstanding threatens to break their bond forever?Cover and illustrations drawn by @ginnywings
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"Come on, champ. It's not every day they accept kids like you in places like that. Mom would be proud."
He didn't say anything. He just hugged the folder.
Outside, it was still raining.
And even though he didn't fully understand what was happening...
... A part of him knew his life would never be the same again.
[ . . . ]
I'm still working on a good summary! Sorry about that.
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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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He was only an uncle to his kids, they had two decent parents at home, and there were four grandparents willing to step up if needed. They were also prone to mad science or city-wide mayhem if left unsupervised for five consecutive minutes.
And the boys got up early, so there was a lot of those.
Perry was granted his work from home after whatever had gone down with the monkeys and the unicycles near immediately after school got out.
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Yet another human Perry rewrite, this one with a more mature theme, focusing on Perry and his relationships with the people around him.
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Welcome to Our Lives (There's No Turning Back) by TheChristianNerd
Fandoms: Phineas and Ferb
07 Feb 2026
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The Flynn Fletcher family believes they have settled into a good equilibrium since Dr. Shamai. Linda believes that she's finally learned all there is to learn about what a normal day means for her children, and that she's fully emotionally digested it.
Then she meets Meap. And in the process, learns that sometimes her children's adventures are far more high stakes than a contraption in the backyard.
Series
- Part 6 of Full Transparency 'Verse