Cast

• Spencer Breslin — Tucker Willams / Mega-Boy
• Courteney Cox — Marsha Holloway
• Chevy Chase — Dr. Grant
• Kevin Zegers — Connor Shepard / Concussion
• Michael Cassidy — Dylan West / Houdini
• Rip Torn — Larraby
• David L. Lander — Wendy's Employee
• Willie Garson — Dick
• Tim Allen — Jack Sheppard
• Kate Mara — Summer Jones / Wonder
• Ryan Newman — Cindy Collins / Princess
• Cornelia Guest — Cindy's Mom
• Ashton Moio — Halloween Bully
• Thomas F. Wilson — Dylan's Teacher
• Ridge Canipe — Mean Bully
• Danny McCarthy — Meaner Bully
• Jane Hajduk — Researcher Taylor
• Tommy Chang — Martial Arts Instructor
• Zoe Doyle — Researcher