Ben Healy and his social climbing wife Flo adopt fun-loving seven year old Junior. But they soon discover he's a little monster as he turns a camping trip, a birthday party and even a baseball game into comic nightmares.
Ben
John Ritter
Big Ben
Jack Warden
Junior
Michael J. Oliver
Mr. Peabody
Gilbert Gottfried
Flo
Amy Yasbeck
Martin Beck
Michael Richards
Roy
Peter Jurasik
Lorraine
Charlotte Akin
Kid #3
Anna Marie Allred
Catcher
Adam Anderly
Boy in Chair
Robert A. Anderson
2nd Baseman
Cody Beard
Kid #1
Jordan Burton
Umpire
Eli Cummins
Paramedic
John S. Davies
Clown
Vince Davis
All American Dad
Dennis Dugan
Freddy
Justin Elledge
All American Boy
Eric Elterman
Mr. Henderson
Ward Emling
Warden
John William Galt
Sister Mary
Corki Grazer
Guard #2
Vernon Grote
Serious Boy
Garland Hampton
Mother Superior
Helena Humann
Mr. Yangita
Philip Jhin
Anchorperson
Judy Jones
Sister Abigail
Melody Jones
Mr. Hirohito
Danny Kamekona
Mr. Mitsui
Ehchi Edward Kawanabe
Lucy
Colby Kline
Kid #5
Joseph Kolb
Master of Ceremonies
Hugh Lampman
Nun #2
Ellen Locy
Mrs. Henderson
Kristen Lowman
Shortstop
Joshua Martin
Friend #2
Melissa Reneé Martin
Harriet
Julie Mayfield
Rich Lady
Andrea McCall
Guard #1
Willie Minor
Juan
Ron Miranda
Friendly Woman
Shepler Mobley
Prisoner
S. 'Monty' Moncibais
Sister Samantha
Norma Moore
Friend #1
Abby Newman
Psychiatrist
John O'Connell
Kid #2
Kristy Lynne Patrick
Dr. Strauss
Eric Poppick
Circus Clown
John Rainone
Ringmaster
Martin Rayner
Cameraman
Dennis Redfield
Friend #3
Symone Redwine
Pedro
Lico Reyes
Mrs. Perkins
Florence Schauffler
Kinjo Hirohito
Shaun Shimoda
Angry Little Person
Garry Smith
Kid #4
Josh Stoppelwerth
Police Officer #1
Al Trejo
Kid in Dugout
Alex Utroska
Neo Nazi
Kerry Von Erich
Regular Joe
Jack Willis
Jim O'Conner
Ed Yeager
Serious Girl
Jessica Zucha
Additional Voice (voice)
John Achorn
Additional Voice (voice)
Lee Arnone
Additional Voice (voice)
Catherine Battistone
Additional Voice (voice)
Rina Bennett
Additional Voice (voice)
Bob Bergen
Additional Voice (voice)
Deem Bristow
Additional Voice (voice)
Agim Coma
Additional Voice (voice)
Maggie Dawson
Additional Voice (voice)
Claudette Duffy
Additional Voice (voice)
Phillip Glasser
Additional Voice (voice)
Kenneth Hartman
Additional Voice (voice)
Endre Hules
Additional Voice (voice)
Richard Kline
Additional Voice (voice)
Amy Levy
Additional Voice (voice)
Marilyn Madderom
Additional Voice (voice)
Humberto Ortiz
Additional Voice (voice)
Anthony Tyler Quinn
Additional Voice (voice)
LaGloria Scott
Additional Voice (voice)
Burton Sharp
Additional Voices (voice)
Laura Summer
Additional Voice (voice)
Dan Woren
Store Shopper (uncredited)
Debbie Adkins
Cafeteria Nun (uncredited)
Joan Arenstein
Police Officer #2 (uncredited)
James Field
Man in Store (uncredited)
Derek A. Jones
Police Officer #3 (uncredited)
Don Kruizinga
Nun (uncredited)
Renay Morgan
Kid (Uncredited)
Kyle Pittman
Kid at Carnival (uncredited)
Jamie Day Price-Young
Parent at Party (uncredited)
Summer Selby