Vincent Martella as Phineas Flynn / Phineas-2 (voice)

Thomas Brodie-Sangster as Ferb Fletcher (voice)

Dee Bradley Baker as Perry the Platypus / Additional Voices (voice)

Ashley Tisdale as Candace Flynn / Candace-2 (voice)

Dan Povenmire as Dr. Heinz Doofenshmirtz / Doof-2 / Additional Voices (voice)

Richard O'Brien as Lawrence Fletcher / Lawrence-2 (voice)

Jeff 'Swampy' Marsh as Major Francis Monogram / Monogram-2 (voice)

Alyson Stoner as Isabella Garcia-Shapiro / Isabella-2 (voice)

Maulik Pancholy as Baljeet Rai / Baljeet-2 / Additional Voices (voice)

Bobby Gaylor as Buford Van Stomm / Buford-2 (voice)

Mitchel Musso as Jeremy Johnson / Jeremy-2 / Additional Voices (voice)

Tyler Alexander Mann as Carl (voice)

Kelly Hu as Stacy Hirano (voice)

John Viener as Norm / Normbots (voice)

Jack McBrayer as Irving (voice)

April Stewart as Additional Voices (voice)

Ariel Winter as Gretchen / Additional Voices (voice)

Caroline Rhea as Linda Flynn-Fletcher / Linda-2 / Additional Voices (voice)

Diamond White as Additional Voices (voice)

Doris Roberts as Mrs. Thompson (voice)

Fred Tatasciore as Additional Voices (voice)

Grey DeLisle as Additional Voices (voice)

Isabella Murad as Milly (voice)

Jeff Bennett as Additional Voices (voice)

Jaret Reddick as Danny (voice)

Jennifer L. Hughes as Additional Voices (voice)

Kevin Michael Richardson as Additional Voices (voice)

Laura Dickinson as Vocalist (voice)

Loni Love as Carl in Disguise (voice)

Todd Stashwick as Mr. Johnson (voice)

Danny Jacob as Ferb-2 (singing voice) (uncredited)

Slash as Self (uncredited)