Two stepbrothers come up with new inventions and schemes to stay ahead of their punk sister. Meanwhile, their pet platypus plots to take down Dr. Doofenshmirtz.


Vincent Martella Phineas Flynn
Thomas Sangster Ferb Fletcher
Ashley Tisdale Candace Flynn
Caroline Rhea Mom/Linda Flynn-Fletcher
Mitchel Musso Jeremy Johnson
Richard O'Brien Dad/Lawrence Fletcher
Dee Bradley Baker Perry the Platypus
Dan Povenmire Dr. Doofenshmirtz
Alyson Stoner Isabella Garcia-Shapiro
Jeff 'Swampy' Marsh Major Monogram
Kelly Hu Stacey
Tyler Mann Karl the Intern
Olivia Olson Vanessa