The WORST episodes of Phineas and Ferb
Every episode of Phineas and Ferb ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of Phineas and Ferb!
Each day, two kind-hearted suburban stepbrothers on summer vacation embark on some grand new project, which annoys their controlling sister, Candace, who tries to bust them. Meanwhile, their pet platypus plots against evil Dr. Doofenshmirtz.
#1 - Phineas and Ferb's Musical Cliptastic Countdown Hosted by Kelly Osbourne
Season 4 - Episode 15 - Aired 6/28/2013
Dr. Doofenshmirtz and Major Monogram have their hearts set on revealing the top 10 musical numbers from Seasons 2 and 3, but soon find out that celebrity host Kelly Osbourne has been brought in to fill the role. Unwilling to submit to playing second fiddle, Doofenshmirtz makes it his mission to thwart Kelly until Perry the Platypus sets out to stop his nemesis from ruining the entire show. Maia Mitchell ("Teen Beach Movie") also guest stars.
#2 - The Doof Side of the Moon
Season 2 - Episode 61 - Aired 10/8/2010
Phineas and Ferb plan to put Danville on the map by building the world's tallest building. However, Candace teams up with Albert and utilizes his expertise to bust her brothers. Meanwhile, Dr. Doofenshmirtz wants to be responsible for all the evil in the Tri-state area, and since he believes that evil levels rise during a full moon, he plans to rotate it so that only the infamous "dark side of the moon" faces Earth.
#4 - Croquet Y-8
Season 5 - Episode 31 - Aired 11/1/2025
Candace and Jeremy make a Perry documentary as the kids play an extreme game of croquet.
#5 - A Chip to the Vet
Season 5 - Episode 9 - Aired 6/21/2025
The boys bring Perry to the vet for a checkup and build a pet wash while they wait. Meanwhile, Perry tries to avoid being chipped by Doofenshmirtz.
#6 - Ain't No Kiddie Ride
Season 2 - Episode 45 - Aired 2/20/2010
The boys trick out the kiddie rides at a store, Dr. Doofenshmirtz tries to burn his name into the atmosphere.
#7 - Cranius Maximus
Season 3 - Episode 45 - Aired 5/4/2012
When Baljeet becomes concerned that he is losing his mental edge, the boys invent a cerebral stimulatory hat, or "Brain booster," to help him. But when the hat exceeds expectations and makes Baljeet exponentially smarter, he suddenly views everyone else as beneath him and becomes a threat to civilization by taking Earth's atmosphere and bringing it to the moon. Meanwhile, Dr. Doofenshmirtz plans to use his "Key-Find-Inator" to collect all the keys in Danville in hopes that it will lead to the Key to the City.
#8 - Doofercise
Season 5 - Episode 30 - Aired 11/1/2025
Doof gathers energy from people exercising while the kids pilot a boat that surfs concrete.
#9 - Biblio-Blast!
Season 5 - Episode 8 - Aired 6/14/2025
The kids build a massive bookcase that gets attacked by an army of Doof-plants.
#10 - The Return of the Rogue Rabbit
Season 4 - Episode 36 - Aired 6/16/2014
Doof gets rogue OWCA agent Dennis the Bunny to escape prison. Meanwhile, Phineas and Ferb make some improvements on the Fireside Girls' marionette show.
#11 - Lord of the Firesides
Season 5 - Episode 12 - Aired 6/21/2025
Isabella struggles to lead the Fireside Girls on her own while Doof renews his evil business license.
#12 - Perry the Actorpus
Season 3 - Episode 36 - Aired 3/3/2012
The executive of Totally Tools oversees a contest to find the company’s "spokesanimal," and Perry is crowned the winner. However, the victory puts Perry's secret identity in jeopardy, forcing Major Monogram to appoint Agent S as a temporary replacement, but when Dr. Doofenshmirtz sees his new nemesis is Sergei the Snail, he mistakenly underestimates his new opponent. Meanwhile, Candace has been welcomed into Mandy’s "Stop the Busting" retreat, which aims to teach Candace to control the urge to bust her brothers through positive reinforcement.
#13 - The Inator Method
Season 4 - Episode 43 - Aired 9/29/2014
Doofenshmirtz teaches an Inator Method seminar.
#14 - Sipping With the Enemy
Season 3 - Episode 51 - Aired 6/22/2012
Candace tries to bust Phineas and Ferb when they put on an enormous backyard magic show, while Vanessa and Major Monogram's son Monty get coffee together despite their warring fathers. Meanwhile, Dr. Doofenshmirtz tries to become hip in an attempt to get youthful followers.
#15 - Sleepwalk Surprise
Season 3 - Episode 49 - Aired 6/8/2012
Candace's plans to hang out with Jeremy are derailed after he becomes interested in playing Phineas and Ferb's newest game, jet pack volleyball. Meanwhile, when Dr. Doofenshmirtz discovers he invents "-inators" in his sleep, he decides to go back into his dreams to find out what is happening.
#16 - Bread Bowl Hot Tub
Season 5 - Episode 33 - Aired 11/8/2025
Buford goes on a whimsical adventure with a bread bowl hot tub.
#19 - More Than an Intern
Season 5 - Episode 10 - Aired 6/21/2025
Carl tries to help Perry stop Doofenshmirtz while working three other part-time jobs.
#20 - Perry Lays an Egg
Season 2 - Episode 10 - Aired 4/11/2009
When an early end to their daily project causes Phineas and Ferb to mistake an egg for Perry's, the boys use all their technological knowhow to help hatch the new part of the family. However Candace has different plans for the egg, as a nature show brings her to be the one to convince Phineas and Ferb that the newborn will need a real mother. Meanwhile, Doofenshmirtz is doing all he can to convince Perry that his latest scheme really is evil.
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#21 - Voyage to the Bottom of Buford
Season 1 - Episode 30 - Aired 6/7/2008
When Buford's goldfish goes missing, the boys help him find it out at sea. Meanwhile, Dr. Doofenshmirtz tries to destroy a tape of him 'saving' a kitten from a tree.
#22 - Buford Confidential
Season 3 - Episode 43 - Aired 4/27/2012
Brigitte, Josette, and Colette, the visiting Fireside Girls from France, help Isabella capture the American Grizzly Bear, one of the world's most dangerous creatures. Buford's plan to jokingly dress up as the bear backfires when he discovers the identity of Brigitte, throwing him off his game. Back at their grandparents' cabin, Phineas and Ferb create the most amazing "run-through-the-sprinkler" experience. Meanwhile, Dr. Doofenshmirtz's loathing of pretzels drives him to create the "De-Twist-Inator" to untwist every pretzel in Danville.
#23 - I Scream, You Scream
Season 1 - Episode 15 - Aired 2/17/2008
Phineas and Ferb make the biggest ice cream maker for Isabella after her tonsils are taken out. Doofenshmirtz's daughter, Vanessa, spends the day at his lair and tries to convince his ex-wife that he's evil.
#24 - The Ballad of Bubba Doof
Season 5 - Episode 19 - Aired 7/12/2025
The kids build a western town while Agent P is captured by Doofenshmirtz's swamp-dwelling cousin, Bubba Doof.
#25 - Ferb TV
Season 3 - Episode 57 - Aired 9/7/2012
Phineas and Ferb create their own TV shows and commercials.