Ashley Tisdale Candace Flynn (voice) Vincent Martella Phineas Flynn (voice) David Errigo Jr. Ferb Fletcher (voice) Dan Povenmire Dr. Doofenshmirtz (voice) Olivia Olson Vanessa Doofenshmirtz (voice) Alyson Stoner Isabella (voice) Bobby Gaylor Buford (voice) Maulik Pancholy Baljeet (voice) Dee Bradley Baker Perry the Platypus / Mama (voice) Ali Wong Super Super Big Doctor (voice) Wayne Brady Stapler-Fist (voice) Thomas Middleditch Garnoz (voice) Diedrich Bader Borthos (voice) Thomas Sanders Throat-Lobster (voice) Caroline Rhea Linda Flynn-Fletcher (voice) Richard O'Brien Lawrence Fletcher (voice) Mitchel Musso Jeremy (voice) Kelly Hu Stacy (voice) Jeff 'Swampy' Marsh Major Monogram (voice) Bill Farmer Hermellivue (voice) Corey Burton Farmer (voice) John O'Hurley Roger Doofenshmirtz (voice) Tiffany Haddish The Sound Someone Makes When They Explode From The Waist Up (voice)