Phineas and Ferb

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Season 3    Episode 8
May 13, 2011    11m    TV-G
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When Candace discovers that Phineas and Ferb have invented a computer that can answer anything, she asks it how she can finally bust her brothers once and for all. Meanwhile, Dr. Doofenshmirtz loses the key to his latest invention, the "All Purpose-inator," and Agent P must find it before he does.
Directed By
Jay Lender
Written By
Chong Lee, Bernie Petterson

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Cast of Ask a Foolish Question
  • Vincent MartellaPhineas Flynn (voice)
  • Thomas Brodie-SangsterFerb Fletcher (voice)
  • Ashley TisdaleCandace Flynn (voice)
  • Dan PovenmireHeinz Doofenshmirtz (voice)
  • Dee Bradley BakerPerry the Platypus (voice)
  • Alyson StonerIsabella Garcia-Shapiro (voice)
  • Bobby GaylorBuford Van Stomm (voice)
  • Maulik PancholyBaljeet Tjinder (voice)
  • Caroline RheaLinda Flynn-Fletcher (voice)
  • Richard O'BrienLawrence Fletcher (voice)
  • Kelly HuStacy Hirano (voice)
  • Mitchel MussoJeremy Johnson (voice)
  • Jeff 'Swampy' MarshFrancis Monogram (voice)
  • Tyler Alexander MannCarl Karl (voice)
  • Candi MiloAdditional Voices (voice)
  • Corey BurtonAdditional Voices (voice)

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