Directed by David Mickey Evans Written by David Mickey Evans   Jeff Sank   Jason Heimberg   Justin Heimberg   Jack Bernstein   Cast Josh Flitter ... Ace Ventura, Jr. Emma Lockhart ... Laura Wilson Ann Cusack ... Melissa Ventura Cullen Douglas ... Dr. Sickinger Art LaFleur ... Russell Hollander (as Art Lafleur) Austin Rogers ... A Plus Reed Alexander ... Pennington Jr. Carina Conti ... Tara Ralph Waite ... Grandpa Ventura Ashley Milchman ... Emo Kid #1 Brooke Milchman ... Emo Kid #2 Aubrey Shea ... Daniella Morgan Curschman ... Girl Swimmer #1 Paige Huston ... Girl Swimmer #2 Lisa Glaze ... Teacher Kendall Ganey ... Little Girl at Spelling Bee Tom Hillmann ... Trooper Trevin Lica ... Bully Jabari Ty'ree Shaffer ... Boy (as Jabari Shaffer) Jeff Chase ... Pennington Bodyguard John Connon ... Tour Guide Veryl Jones ... Museum Security Guard Phil Ramirez ... Prosecutor Jim R. Coleman ... Judge (as Jim Coleman) Karel Wright ... Tabby's Handler Jeff Farley ... Tabby's Security Officer William Haze ... Magician (as Will Haze) Terry Loughlin ... Horse Owner Patrick Hoover ... Party Kid #1 Haley Sehgal ... Party Kid #2 (as Haley Boyle) Connor Boyle ... Overwhelmed Kid Brian Patrick Clarke ... Pennington Sr. Adam Vernier ... Agent #1 Tom Brooks ... Agent #2 Tyler the Dog ... Ox the Dog Shane Costa ... Pennington Jr. Bodyguard Cristina Huang ... Park Guest (as Cristina Cimino) Dakota Marooney ... Kid at Party Brandon Migliore ... Crash car driver Rhiannon Roberts ... Park Guest Uncredited Cast Chris Adler ... Pennington Jr.'s Bodyguard Robie Alan ... Special Government Agent Christian Andreas ... Guard in Dinosaur Chase Karl Anthony ... Laura's Dad Jennifer Badger ... Security Team Leader Sam Bauso ... FBI Agent Jessica Blackmore ... Assistant with White Horse Ophelia Boxley ... Pedestrian Justin Brown ... Churro Guy Lisa Buckley ... Ox's Pet Store Clerk Chase 'Uzzle' Carter ... FBI Agent Whitney Costner ... Witness Omar Elkalyoubie ... Chinese Dignitary Bayley Ellenburg ... Witness Jeff Ellenburg ... Witness Emily Rose Everhard ... Additional Voices (voice) Macaila Fernandes ... Marina's Friend Ciara Gari ... Student Wael Georgey ... FBI Agent Jen Halbert ... Tabby's Entourage Kelsie Erin Howell ... Party Kid Annie Kidwell ... County Prisoner Ariana Kollman ... Spelling Bee Girl Jesse Kozel ... Neighbor Noah Kronenberger ... Park Guest Jennifer Lonardo ... Teacher Sam Lonigro ... Girls Swim Team Member Leslie Maine ... FBI Agent Amari Marshall ... Student Tiffany Marshall ... Crash Driver / Cafeteria Worker Angel McBride ... iPod Gir - Tara's Friend Celestial McBride ... Spelling Bee Contestant - Marina's Friend Melody Mccraney ... Teacher Nicole Mills ... Ox's Dog Collar Saleslady Freddie Forward Mitchell ... Magic Show Stage Hand Jennifer Paige Moralez ... Student / Party Dancer Tom Myers ... Security Guard Katarina Noel ... Student - Talent Show Headley Oliver III ... Park Guest / Party Dancer Jeremy Palko ... CSI Agent Jason Nathaniel Powers ... Park Guest Steven Quale ... Ox's Dog Owner Summer Raine ... Car Driver / Pedestrian / Neighbor / Prisoner Michael M. Rummel ... Basketball / Wrestling Referee Noah Schnacky ... Swim Team Boy David W. Scott ... Mr. Pennington's Bodyguard AJ Semiday ... Teacher Adonis Stevens ... DJ the Security Guard Andy Ussach ... Pennington's Butler Nelitza Vallellanes ... Teacher Trevis Waters ... Courtroom Attendant Steve Wickersham ... Gatorland Patron Elizabeth Rose Young ... Park Guest Kevin B. Young ... Man on the street Produced by Guy McElwaine   Wayne Morris   David Robinson   James G. Robinson   Original Music by Laura Karpman

Additional Info Premiere: March 01, 2009 DVD Release: March 03, 2009 Country: Distributor: Warner Brother Studios Websites: Production Companies Morgan Creek Entertainment (producer) (as Morgan Creek) Four Aces Productions Distributors Cartoon Network   (2009) (USA) (TV) HBO Max   (2020) (USA) (video) (VOD) Warner Home Video   (2009) (World-wide) (DVD) Rating Stats Overall Rating 2.1 / 10 Our Rating -- / 10 Your Friends -- / 10 Male Users -- / 10 Female Users -- / 10 Site Ranking #5,546 / 20,886 Site Ranking #5,542 Godzilla vs. Gigan (1972) #5,543 The Power (2021) #5,544 Jonestown: The Life And Death Of Peoples Temple (2006) #5,545 Lone Wolf And Cub: Baby Cart To Hades (1972) #5,546 Ace Ventura: Pet Detective Jr. (2009) #5,547 The Furies (2019) #5,548 Terror Firmer (1998) #5,549 Zombie Apocalypse (2011) #5,550 Wolf Creek: Season 1 (2016)