Thora Birch
— Vivian Petunia
Brittany Snow
— Robin McDougal
Eddie Kaye Thomas
— Michael Petunia
Christine Lahti
— Felicia Petunia
Michael Urie
— George McDougal
Tobias Segal
— Charlie Petunia
David Rasche
— Percy Petunia
Jimmy Heck
— Adrian Petunia
Branca Ferrazo
— Natassia
Kathy Searle
— Lynn
Lion Shirdan
— Russel
Meredith Holzman
— Melinda
Cosondra Sjostrom
— Bethany Bevins
Bolt Birch
— Tony Thrust
Shad Gaspard
— XL
