Phineas and Ferb

When Worlds Collide

Season 3    Episode 58
September 14, 2012    11m    TV-G
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After discovering that a strange planet is hurtling directly towards Danville, Phineas and Ferb set out to avert a disaster, while Buford looks forward to making contact with its alien race. Meanwhile, Dr. Doofenshmirtz hopes to steal the world's largest ball of twine.
Directed By
Robert Hughes
Written By
Kyle Menke, Derek Lee Thompson

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Cast of When Worlds Collide
  • 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)

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