100 Phineas and Ferb Trivia Questions & Answers

Ferb, we know exactly what we are going to do today.

This Phineas and Ferb trivia quiz covers the Flynn-Fletcher family, Agent P, inators, songs, giant builds, and movie adventures.

A Fine Day in Danville

A Fine Day in Danville puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

1. Who are the title stepbrothers?
   Answer: Phineas Flynn and Ferb Fletcher, inventive boys spending summer together.
2. In what city do the boys live?
   Answer: Danville, located somewhere in the Tri-State Area.
3. What season frames most of the original series?
   Answer: Summer vacation, celebrated as 104 days in the theme song.
4. Who is Phineas's older sister?
   Answer: Candace Flynn, who constantly tries to expose the boys' projects.
5. Who is Ferb's father?
   Answer: Lawrence Fletcher, a British antiques dealer.
6. Who is Phineas and Candace's mother?
   Answer: Linda Flynn-Fletcher, a former pop singer known as Lindana.
7. How are Phineas and Ferb related?
   Answer: They are stepbrothers in a blended family.
8. What shape is Phineas's head?
   Answer: A distinctive triangular shape when viewed in profile.
9. What color hair does Ferb have?
   Answer: Green hair, usually styled flat against his tall head.
10. What does Phineas often say before starting a project?
    Answer: “Ferb, I know what we're gonna do today!”

Candace and the Busting Mission

Candace and the Busting Mission puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

Keep your game going afterward with our movie trivia. For now, stay with this world and watch the wording.

11. What is Candace usually trying to do?
    Answer: Bust her brothers by showing their inventions to their mother.
12. Why does Candace's evidence usually disappear?
    Answer: Perry and Doofenshmirtz's conflict accidentally removes the invention.
13. Who is Candace's best friend?
    Answer: Stacy Hirano, who often listens to her frantic explanations.
14. Who is Candace's longtime crush and later boyfriend?
    Answer: Jeremy Johnson, a relaxed employee at Mr. Slushy Dawg.
15. What instrument does Jeremy play?
    Answer: Guitar, including with his band Jeremy and the Incidentals.
16. What is Candace's middle name?
    Answer: Gertrude, revealed during the series.
17. What plant causes Candace to hallucinate after touching it?
    Answer: Wild parsnips trigger her strange reactions in “Jerk De Soleil.”
18. What song title captures Candace's need for control?
    Answer: “Busted,” a duet she imagines with Vanessa Doofenshmirtz.
19. What happens when Candace finally shows Linda a project in “Last Day of Summer”?
    Answer: Time loops and reality destabilizes instead of delivering a normal bust.
20. What is the name of Irving's older brother?
    Answer: Albert Du Bois, who initially doubts the boys' remarkable accomplishments.

Perry the Platypus

Perry the Platypus puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

21. What is the family's pet platypus called?
    Answer: Perry, who secretly works as Agent P.
22. Which agency employs Perry?
    Answer: O.W.C.A., the Organization Without a Cool Acronym.
23. Who gives Perry his missions?
    Answer: Major Francis Monogram, usually through a video screen.
24. Who is Major Monogram's intern?
    Answer: Carl Karl, an earnest young O.W.C.A. employee.
25. What hat identifies Perry in agent mode?
    Answer: A brown fedora, which somehow conceals his identity.
26. Who is Perry's usual nemesis?
    Answer: Dr. Heinz Doofenshmirtz, an eccentric evil scientist.
27. What phrase does Doof say when Perry appears?
    Answer: “A platypus?” followed by recognition: “Perry the Platypus!”
28. Where is Perry's main lair entrance at home?
    Answer: Several secret passages exist, including one beneath the Flynn-Fletcher house.
29. What sound does Perry make?
    Answer: A distinctive chattering growl performed as a recurring vocal effect.
30. What happens if a host family discovers an O.W.C.A. animal's identity?
    Answer: The agent may be reassigned, as Perry fears in the movie.

Doofenshmirtz Evil Incorporated

Doofenshmirtz Evil Incorporated puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

31. What is Doofenshmirtz's full name?
    Answer: Dr. Heinz Doofenshmirtz, frequently called Doof.
32. What building houses his schemes?
    Answer: Doofenshmirtz Evil Incorporated, accompanied by its own jingle.
33. What suffix does he attach to most inventions?
    Answer: “-inator,” as in the Shrink-inator and Age-Accelerator-inator.
34. What region does Doof repeatedly want to conquer?
    Answer: The Tri-State Area, rarely with a practical plan afterward.
35. Where did Doofenshmirtz grow up?
    Answer: Drusselstein, a fictional European country.
36. Who is Doof's daughter?
    Answer: Vanessa Doofenshmirtz, a teenager often embarrassed by him.
37. Who is Vanessa's mother?
    Answer: Charlene Doofenshmirtz, Heinz's wealthy former wife.
38. What brother overshadows Heinz?
    Answer: Roger Doofenshmirtz, the successful mayor of Danville.
39. What garden ornament was Heinz forced to be as a child?
    Answer: His family's lawn gnome, standing outside through bad weather.
40. What surprising skill often undermines Doof's evil image?
    Answer: He is a caring father who tries hard to support Vanessa.

Friends and Fireside Girls

Friends and Fireside Girls puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

Keep your game going afterward with our Disney trivia. For now, stay with this world and watch the wording.

41. Who has an obvious crush on Phineas?
    Answer: Isabella Garcia-Shapiro, leader of the Fireside Girls troop.
42. What does Isabella usually ask Phineas?
    Answer: “Whatcha doin'?” whenever she approaches a new project.
43. What troop does Isabella lead?
    Answer: Fireside Girls Troop 46231.
44. What is Baljeet's strongest school subject profile?
    Answer: He excels academically, especially in math and science.
45. Who frequently bullies Baljeet but remains his friend?
    Answer: Buford Van Stomm, a tough boy with hidden sensitivity.
46. What tiny fish does Buford cherish?
    Answer: Biff, his pet goldfish.
47. Who is the devoted fan who keeps records of the boys?
    Answer: Irving Du Bois, who maintains a Phineas and Ferb scrapbook.
48. Who is Jeremy's younger sister?
    Answer: Suzy Johnson, sweet around adults but hostile toward Candace.
49. Who leads the Fireside Girls organization locally?
    Answer: Isabella serves as troop leader, with multiple named troop members.
50. What patch-driven skill set makes the Fireside Girls useful?
    Answer: They have badges for an enormous range of practical abilities.

Big Builds and Inventions

Big Builds and Inventions puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

51. What giant ride do the boys build in the series premiere?
    Answer: A backyard roller coaster that stretches across Danville.
52. What machine lets them travel through time?
    Answer: A repaired time machine displayed at a museum.
53. Whom do they meet in the prehistoric past?
    Answer: Cavemen and dinosaurs, after becoming stranded with Candace.
54. What do the boys carve into Mount Rushmore?
    Answer: Candace's face as part of her birthday celebration.
55. What backyard attraction uses a snowy mountain?
    Answer: A ski resort complete with an artificial mountain and slopes.
56. What do they build to help Baljeet learn to drive?
    Answer: An elaborate driving course and training setup.
57. What do Phineas and Ferb create in “Toy to the World”?
    Answer: The Perry-themed inaction figure, designed to do absolutely nothing.
58. What enormous game do they construct in “Gaming the System”?
    Answer: A giant video game that players operate from within.
59. What structure do they build in “Swiss Family Phineas”?
    Answer: A huge treehouse after the family becomes stranded.
60. What usually inspires the day's build?
    Answer: A casual problem, request, or exciting idea that Phineas enthusiastically expands.

Songs and Performances

Songs and Performances puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

61. Who performs the series theme song?
    Answer: Bowling for Soup performs “Today Is Gonna Be a Great Day.”
62. What song celebrates a small backyard beach?
    Answer: “Backyard Beach,” performed during the boys' homemade resort day.
63. What song does the fictional band Love Händel reunite to perform?
    Answer: “You Snuck Your Way Right Into My Heart.”
64. Which song accompanies the boys searching for their pet?
    Answer: “Come Home Perry,” sung after they believe Perry is missing.
65. What glamorous song does Candace sing with Vanessa?
    Answer: “Busted,” imagining how they will expose their brothers and father.
66. What brief song explains where the band has gone?
    Answer: “Dude, We're Getting the Band Back Together,” also the episode title.
67. What song accompanies Doofenshmirtz and Charlene's imagined reunion?
    Answer: “Evil Love,” performed as a theatrical villainous romance duet.
68. What does an aglet name?
    Answer: The plastic or metal tip at the end of a shoelace.
69. What song teaches Danville residents that word?
    Answer: “A-G-L-E-T,” staged as a massive public concert.
70. What musical competition makes Phineas and Ferb one-hit wonders?
    Answer: The Super American Pop Teen Idol Star competition in “Flop Starz.”

Episodes and Running Jokes

Episodes and Running Jokes puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

Keep your game going afterward with our TV show trivia. For now, stay with this world and watch the wording.

71. What does a character often ask about the boys' age?
    Answer: “Aren't you a little young to be...” followed by the activity.
72. How does Phineas answer that age question?
    Answer: “Yes. Yes, I am,” before continuing confidently.
73. What greeting does Ferb receive unusually often?
    Answer: “Hey, Ferb,” while his silence makes his rare lines stand out.
74. What recurring creature appears where it should not?
    Answer: A giant floating baby head, an intentionally unexplained visual gag.
75. What repeated flaw makes many inators easy for Perry to stop?
    Answer: Doof places accessible self-destruct buttons on his inventions.
76. What is Norm?
    Answer: A large humanoid robot that Doofenshmirtz created and sometimes treats like a son.
77. What building jingle plays whenever Doof's headquarters appears?
    Answer: “Doofenshmirtz Evil Incorporated!”
78. What does Candace sometimes shout when her brothers vanish?
    Answer: “Mom!” or an urgent call for Linda to see the project.
79. What detail makes Ferb's speaking moments memorable?
    Answer: He is mostly silent, then delivers a polished or unexpectedly deep line.
80. What question does Linda often ask after missing the invention?
    Answer: She calmly asks what Candace is talking about because nothing remains.

Movies and Specials

Movies and Specials puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

81. What alternate dimension appears in the first Phineas and Ferb movie?
    Answer: The 2nd Dimension, ruled by a competent and cruel Doofenshmirtz.
82. What important secret do the boys learn in Across the 2nd Dimension?
    Answer: Perry is a secret agent.
83. Why do the boys later forget Perry's identity?
    Answer: They choose to have their memories erased so he can remain with them.
84. What is the title of the 2020 Disney+ film?
    Answer: Phineas and Ferb the Movie: Candace Against the Universe.
85. Who abducts Candace and Vanessa in that film?
    Answer: Aliens from the planet Feebla-Oot.
86. Why does alien leader Super Super Big Doctor value Candace?
    Answer: Candace's body emits carbon dioxide that benefits the planet's mind-controlling plant.
87. What crossover sends the characters into a famous space saga?
    Answer: Phineas and Ferb: Star Wars, a non-canon retelling alongside Episode IV.
88. Which superheroes cross over with the boys in Mission Marvel?
    Answer: Marvel heroes including Spider-Man, Iron Man, Thor, and Hulk.
89. What winter special sends the boys to help Santa?
    Answer: “Phineas and Ferb Christmas Vacation!”
90. Which future-set episode shows the gang as adults?
    Answer: “Act Your Age,” set ten years later and focused on Phineas and Isabella.

Creators, Voices, and Revival

Creators, Voices, and Revival puts ten sharply focused clues on the quiz board. Expect familiar favorites first, followed by details that reward a closer watch.

91. Who created Phineas and Ferb?
    Answer: Dan Povenmire and Jeff “Swampy” Marsh.
92. Who voices Phineas?
    Answer: Vincent Martella provides Phineas's speaking voice.
93. Who voices Ferb in the original run?
    Answer: Thomas Brodie-Sangster voices Ferb for most of the original series.
94. Who voices Candace?
    Answer: Ashley Tisdale voices the determined older sister.
95. Who voices Doofenshmirtz?
    Answer: Co-creator Dan Povenmire performs Heinz Doofenshmirtz.
96. Who voices Major Monogram?
    Answer: Co-creator Jeff “Swampy” Marsh performs Perry's commander.
97. Who voices Isabella?
    Answer: Alyson Stoner voices Isabella in the series and films.
98. Who voices Linda Flynn-Fletcher?
    Answer: Caroline Rhea voices the boys' mother.
99. When did the original series first premiere?
    Answer: It previewed in 2007 before its regular run began in 2008.
100. What major return began with new episodes in 2025?
     Answer: A fifth season revival reunited the characters for another summer.

Sources and Further Reading

• Disney+: Phineas and Ferb
• D23: Phineas and Ferb
• Television Academy: Phineas and Ferb
• The Walt Disney Company: Phineas and Ferb return