Thomas Brodie-Sangster as Ferb (voice)

Vincent Martella as Phineas (voice)

Dan Povenmire as Dr. Doofenshmirtz / Additional Voices (voice)

Jeff 'Swampy' Marsh as Major Monogram / Additional Voices (voice)

Dee Bradley Baker as Perry / Additional Voices (voice)

Jane Kaczmarek as Maggie the Macaw (voice)

J.K. Simmons as Napoleon / Additional Voices (voice)

Josh Gad as Wendell (voice)

Paul Reubens as Parenthesis (voice)

Stephen Root as Floyd / Additional Voices (voice)

Tyler Alexander Mann as Carl (voice)