Phineas and Ferb

10 Worst Episodes of Phineas and Ferb

Each day, two kindhearted 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.

Written by Sophie and last updated on jan 14, 2023.

PS: The following content contains spoilers!

PPS: I will admit that parts of this page was written with the help of AI - it makes my work so much easier to not start from a blank page!

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Phineas and Ferb - S4E17

#10 - Just Desserts (Season 4 - Episode 17)

Phineas and Ferb build a wall for climbing. Candace is recording a Fireside Girls book with Irving and loses her voice. Meanwhile, Dr. Doofenshmirtz creates the Just-Desserts-inator.

The episode was rated 7.44 from 34 votes.

Phineas and Ferb - S3E60

#9 - Road to Danville (Season 3 - Episode 60)

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When one of Dr. Doofenshmirtz's "-inators" zaps him and Agent P into the middle of nowhere, they must embark on a comical journey filled with twists and turns to return home.

The episode was rated 7.44 from 32 votes.

Phineas and Ferb - S3E57

#8 - Ferb TV (Season 3 - Episode 57)

Phineas and Ferb create their own TV shows and commercials.

The episode was rated 7.43 from 28 votes.

Phineas and Ferb - S3E45

#7 - Cranius Maximus (Season 3 - Episode 45)

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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.

The episode was rated 7.36 from 22 votes.

Phineas and Ferb - S4E12

#6 - Bee Story (Season 4 - Episode 12)

Isabella and the Fireside Girls turn themselves into bees. Poofenplotz tries to become Queen of the World by stealing and consuming massive amounts of royal jelly.

The episode was rated 7.33 from 40 votes.

Phineas and Ferb - S3E52

#5 - Tri-State Treasure: Boot of Secrets (Season 3 - Episode 52)

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The guys help their dad unearth a missing piece of Danville history; Doofenshmirtz tries to make himself younger to win a children's film festival.

The episode was rated 7.32 from 22 votes.

Phineas and Ferb - S4E8

#4 - Primal Perry (Season 4 - Episode 8)

Perry comes face to face with an Australian platypus hunter set on destroying him. Baljeet is having an existential emergency and finds himself incapable of making decisions.

The episode was rated 7.30 from 61 votes.

Phineas and Ferb - S2E63

#3 - Brain Drain (Season 2 - Episode 63)

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Phineas, Ferb and the gang are all sick with a cold, so they decide to make it the best "sick day" ever by creating a live television feed to their friends' homes so that they can all enjoy a day of fun together. Meanwhile, Vanessa learns from her mom, Charlene, that her dad is picking her up from a party she is going to with her punk rock boyfriend Johnny and is worried that he will embarrass her yet again. However, Dr. Doofenshmirtz is busy trying to use his "Deevolution-ator" to drain Agent P's will power so that he can control him, and things get out of hand when Dr. Doofenshmirtz picks up Vanessa at the party, and it's up to Agent P to save the day.

The episode was rated 7.24 from 34 votes.

Phineas and Ferb - S3E51

#2 - Sipping With the Enemy (Season 3 - Episode 51)

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.

The episode was rated 7.18 from 22 votes.

Phineas and Ferb - S4E15

#1 - Phineas and Ferb Musical Cliptastic Countdown Hosted by Kelly Osbourne (Season 4 - Episode 15)

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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.

The episode was rated 6.95 from 39 votes.

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