Vincent Martella Phineas Voice Thomas Brodie-Sangster Ferb Voice Ashley Tisdale Candace Voice Caroline Rhea Mom Voice Richard O'Brien Dad Voice Dee Bradley Baker Perry the Platypus Voice Dan Povenmire Dr. Heinz Doofenshmirtz Voice, Director Mitchel Musso Jeremy Voice Alyson Stoner Isabella Voice Jeff "Swampy" Marsh Major Monogram Actor, Executive Producer Maulik Pancholy Baljeet Voice Kelly Hu Stacy Voice Tyler Mann Karl Voice Olivia Olson Vanessa Voice Kari Wahlgren Little Suzy Voice Zac Moncrief Director Sue Perrotto Director