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My Secret Agent by
CrossoverFanBoi
Perry is Fluttershy's pet platypus, and doesn't do much... Until he's alone. Perry, or Codename: Agent P, sneaks out of his house to fight his arch nemesis, Dr Doofensmirthz
Crossover - Phineas and Ferb & My Little Pony - Rated: K - English - Adventure/Friendship - Chapters: 1 - Words: 437 - Published: 10/14 - Perry, Dr. Doofenshmirtz, Fluttershy, Twilight Sparkle
Multiversal Mayhem by
SquareSBdisney100
Across the multiverse, a powerful enemy seeks a special weapon that threatens everything across every universe and time. When that weapon winds up in Bikini Bottom, SpongeBob and his friends must race across time and universe, meeting new friends, in order to save their home and everything they love from their most powerful enemy yet!
Crossover - SpongeBob SquarePants & Phineas and Ferb - Rated: K+ - English - Adventure/Friendship - Chapters: 5 - Words: 18,031 - Favs: 1 - Follows: 1 - Updated: 10/12 - Published: 9/13 - SpongeBob, Patrick, Phineas, Ferb
Milo Murphy's Law: Revenge Of The 2nd Dimension by
SuperSmashBrandon
A sequel to my fanfic Milo Murphy's Law: Across The 2nd Dimension. Milo Murphy joins with the OWCAsistance of the 2nd Dimension to stop Candace-2D from taking over the 1st Dimension. Milo Murphy's Law and Phineas and Ferb are owned by Disney
Crossover - Phineas and Ferb & Milo Murphy's Law - Rated: T - English - Sci-Fi/Suspense - Chapters: 1 - Words: 2,352 - Published: 10/8 - Candace, Dr. Doofenshmirtz, Milo M. - Complete
Milo Murphy's Law: Across The 2nd Dimension by
SuperSmashBrandon
This is a crossover of Milo Murphy's Law with the 2nd Dimension from Phineas & Ferb. It's the first day of summer. But Milo Murphy and his friends builds a Other-dimension-inator to visit the 2nd Dimension in their new adventure until an old enemy returns. Milo Murphy's Law and Phineas and Ferb are owned by Disney
Crossover - Phineas and Ferb & Milo Murphy's Law - Rated: T - English - Sci-Fi/Suspense - Chapters: 2 - Words: 2,887 - Published: 10/8 - Candace, Dr. Doofenshmirtz, Milo M. - Complete
Phineas Flynn the Badger: Ginga Senso Valiant by
shadowayn reviews
Following the Events of Phineas Flynn the Badger and Ginga Densetsu Valiant. Phineas's attempts at becoming human again is put on as OWCA and Ohū joins again as S.I.C.O. sets their plans in motion and begins to take control, old friends and foes return as well as new, OWCA and Ohū unite to face SICO to stop the Coronel, Hannibal and Alpheus.
Crossover - Phineas and Ferb & Ginga series - Rated: T - English - Adventure/Drama - Chapters: 11 - Words: 77,505 - Reviews: 4 - Favs: 5 - Follows: 3 - Updated: 9/29 - Published: 7/30/2014 - Phineas, Ferb, Perry, OC
Phineas and Quite Possibly Ferb by
Ohfortheloveofpete reviews
Phineas and Ferb move into Middleton...and meet the girl who can do anything.
Crossover - Kim Possible & Phineas and Ferb - Rated: K - English - Adventure/Humor - Chapters: 79 - Words: 303,273 - Reviews: 172 - Favs: 84 - Follows: 67 - Updated: 9/26 - Published: 2/10/2015 - Kim P., Ron S., Phineas, Ferb
It's All Pure Science! by
GrimmjowTaichou reviews
What would happen if a man is reborn in High School DxD as... Heinz Doofenshimirtz! The world is not ready for this man's inventions that could be magical in nature when it totally isn't! (SI and AU elements)
Crossover - Phineas and Ferb & High School DxD/ハイスクールD×D - Rated: M - English - Sci-Fi/Supernatural - Chapters: 4 - Words: 12,617 - Reviews: 43 - Favs: 236 - Follows: 295 - Updated: 9/5 - Published: 8/17 - [Dr. Doofenshmirtz, OC] Vanessa, H. Issei
Shop Smart by
Queen of Kitty Cats
A new store has opened in Danville, and Phineas and Ferb are there to check it out.
Crossover - Evil Dead/Army of Darkness & Phineas and Ferb - Rated: K+ - English - Chapters: 1 - Words: 779 - Published: 9/3 - Phineas, Ferb - Complete
Arnold's Trip to Danville by
Anniemadeit21 reviews
In the neighborhood, Arnold has his own set of unique family members: His grandpa's funny, his grandma's eccentric, and there are so many others that do things that normal people would find crazy. That's life for Arnold 24/7. But when he gets a letter to go meet his cousins in Danville, He finds that being unique can take you to new heights. Rated K for now.
Crossover - Hey Arnold & Phineas and Ferb - Rated: K+ - English - Adventure/Friendship - Chapters: 11 - Words: 14,193 - Reviews: 5 - Favs: 8 - Follows: 7 - Updated: 8/27 - Published: 1/18/2014 - [Arnold, Helga] [Isabella, Phineas]
Tales from the Rebellion by
Will X reviews
Continuation of the Star Wars special. Candace, Isabella, and Phineas join the Rebel Alliance and become entangled in the war, while Ferb is forced into his own journey by Darthenshmirtz's manipulations. Behind it are petty intrigues, war politics, people being people, and a truly dark plot unfolding deep in the shadows. Rated T for coarse language and violence.
Crossover - Star Wars & Phineas and Ferb - Rated: T - English - Humor/Adventure - Chapters: 29 - Words: 241,723 - Reviews: 32 - Favs: 26 - Follows: 28 - Updated: 8/26 - Published: 9/5/2016 - Han S., Darth Vader, O. Krennic, Ferb
PAW Meets PnF by
axelrodlenny reviews
Doofenshmirtz brings Marshall and Everest to Danville via his Teleporter -Inator 2.0. When the rest of the PAW Patrol finds out about this, the Humdingers team up with him to cause mayhem. Phineas, Ferb, Ryder, and the pups must stop them before it's too late!
Crossover - Phineas and Ferb & PAW Patrol - Rated: K - English - Adventure/Sci-Fi - Chapters: 5 - Words: 4,484 - Reviews: 1 - Favs: 5 - Follows: 5 - Updated: 8/14 - Published: 1/26 - Phineas, Dr. Doofenshmirtz, Marshall, Everest
A King and a Scientist by
CaramelPhoenix
When Olly and Dr. Doofenshmirtz get trapped in an elevator, they form an unlikely friendship that involves Doof in trying to get Olly back home.
Crossover - Mario & Phineas and Ferb - Rated: K - English - Chapters: 1 - Words: 1,927 - Favs: 1 - Published: 7/24 - Olly, Dr. Doofenshmirtz - Complete
Phineas and Ferb: Brothers of the Force by
cartoonace reviews
Phineas and Ferb, two Jedi Knights race across the universe fighting the evil of the Sith to bring balance back to the Force. But will they be able to resist the allure of the Dark Side.
Crossover - Star Wars & Phineas and Ferb - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 5,650 - Reviews: 2 - Favs: 1 - Follows: 3 - Updated: 7/20 - Published: 7/3 - Isabella, Phineas, Ferb, Dr. Doofenshmirtz
My Guardian Angel by
CosmoFan47 reviews
After the events of "Sphere and Loathing in Outer Space" Milo Murphy is ready for the next adventure. That adventure comes as Milo and his friends get shipwrecked on the Island of Lost Dakotas... and finally learn why Dakota became Cavendish's personal guardian angel.
Crossover - Phineas and Ferb & Milo Murphy's Law - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 11 - Words: 11,486 - Reviews: 7 - Favs: 7 - Follows: 3 - Updated: 7/18 - Published: 7/9/2019 - Dr. Doofenshmirtz, Milo M., Vinnie D., Balthazar C.
Me and the totally spies by
Klm965834
Read to find out.
Crossover - Totally Spies & Phineas and Ferb - Rated: K+ - English - Adventure/Friendship - Chapters: 1 - Words: 2,210 - Published: 7/14
The Thundermans in Danville by
angelaivanov365
The Thundermans move to Danville and have fun adventures with the Phineas and Ferb gang!
Crossover - Phineas and Ferb & Thundermans - Rated: T - English - Chapters: 1 - Words: 2,348 - Updated: 6/20 - Published: 6/18
candace in wonderland by
559050226ASD9
on a hot summer day candace is a the park alone when a white rabbit runs near her
Crossover - Alice in Wonderland & Phineas and Ferb - Rated: K - English - Parody/Fantasy - Chapters: 7 - Words: 10,030 - Updated: 6/7 - Published: 8/9/2022
Mariëndael Misadventures The Owl House Conspiracy King's Tide by
thatonepeachy
This is the final segment of the episode "The Owl House Conspiracy", which is a rewrite of the Season 2 finale of The Owl House, "King's Tide", featuring characters from Phineas and Ferb, Amphibia, and Pinky and The Brain, as well as my friends and I as MC's. The episodes leading up to this one will be posted at a later time due to some difficulties i'm having with the document!
Crossover - Phineas and Ferb & Owl House - Rated: K - English - Fantasy/Adventure - Chapters: 1 - Words: 7,182 - Favs: 2 - Follows: 1 - Published: 4/23
Agent H Quits by
chcu1297
Monogram gets a call from one of his agents.
Crossover - Phineas and Ferb & Hamster & Gretel - Rated: T - English - Humor - Chapters: 1 - Words: 140 - Published: 4/13 - Major Monogram - Complete
phineas and Isabella in wreck it ralph by
Taeko yasuhiro reviews
it's time i promised a wreck it Ralph story a year ago here it is
Crossover - Phineas and Ferb & Wreck-It Ralph - Rated: K+ - English - Friendship - Chapters: 5 - Words: 614 - Reviews: 1 - Favs: 1 - Published: 4/3 - [Isabella, Phineas] King Candy/Turbo, Vanellope von Schweetz - Complete
Here in the Garden by
detectivejigsaw reviews
Late one night, Stan finally does some research he's been putting off. Part 4 of my Stan Doofenshmirtz AU.
Crossover - Phineas and Ferb & Gravity Falls - Rated: K+ - English - Angst - Chapters: 1 - Words: 1,634 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 3/31 - Grunkle Stan - Complete
Shared Secret by
AnimationNut reviews
"Is that your hamster?" Candace asked in shock, and at the same time, Kevin uttered, "Is that your platypus?" Candace stiffened, her blood running ice cold. Kevin swallowed hard, trying to keep the panic out of his expression. What were the odds that both of them had a secret hero pet?
Crossover - Phineas and Ferb & Hamster & Gretel - Rated: K+ - English - Friendship - Chapters: 1 - Words: 5,523 - Reviews: 7 - Favs: 18 - Follows: 8 - Published: 3/19 - Candace, Perry - Complete
Cartoon Crossover by
A-Shade-Who-Writes
Ever wonder what would happen if all of your favorite cartoon characters went to school together? Well, I know I did!
Crossover - Phineas and Ferb & Amazing World of Gumball - Rated: K - English - Drama/Humor - Chapters: 1 - Words: 770 - Published: 3/14 - Complete
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