Cast

• Anthony Michael Hall Gary Wallace
• Kelly LeBrock Lisa
• Ilan Mitchell-Smith Wyatt Donnelly
• Bill Paxton Chet Donnelly
• Suzanne Snyder Deb
• Judie Aronson Hilly
• Robert Downey Jr. Ian (as Robert Downey)
• Robert Rusler Max
• Vernon Wells Lord General
• Britt Leach Al Wallace
• Barbara Lang Lucy Wallace
• Michael Berryman Mutant Biker
• Ivor Barry Henry Donnelly
• Ann Coyle Carmen Donnelly (as Anne Bernadette Coyle)
• Suzy J. Kellems Gymnast
• John Kapelos Dino
• Fred D. Scott Bar Patron
• Vince Townsend Jr. Bar Patron (as Vince Monroe Townsend)
• Chino 'Fats' Williams Bar Patron (as Chino Williams)
• Jill Whitlow Susan, Perfume Salesgirl
• Theodocia Goodrich Lingerie Saleswoman
• Wallace Langham Art (as Wally Ward)
• Johnny Timko The Weenies
• Mikul Robins The Weenies
• Darren Harris The Weenies
• Renee Props The Weenies (as Babette Props)
• Michael Cramer The Weenies
• Todd Hoffman The Weenies
• D'Mitch Davis Bartender
• Mary Steelsmith Girl in Bathroom
• Robin Frohman Girl in Bathroom
• Alison Carole Lowe Girl in Upside Down Bathroom
• Kym Malin Girl Playing Piano
• Jennifer Balgobin Biker Girl
• Jeff Jensen Metal Face
• Prince Hughes Party Guest (as Prince A. Hughes)
• Rick Le Fevour Policeman (as Rick LeFevor)
• Rock A. Walker Policeman (as Rock Walker)
• Joe Gieb Blob Operator
• Kevin Thompson Blob Operator
• Doug MacHugh Wyatt's Father
• Pamela Gordon Wyatt's Mother
• Phillip Borsos Candy Bar Owner (uncredited)
• Steve James Guy at Table (uncredited)

Writers

• John Hughes

Producers

• Joel Silver
• Jane Vickerilla