Steve Latshaw Director, Screenwriter James L. Miles The BioMonster Actor John Alexander Det. Morley Actor Dorothy Best Caitlan Palmer Actor Robin Chapman Newspaper Editor Actor Katherine Culliver Shana Alexander Actor Trevor David Donner Actor Tom Ferguson Quint Actor Susan Fronsoe Nicki Carstairs Actor Bill Grefe Mr. Babb Actor Ryan Latshaw Ryan Palmer Actor John Latshaw Kelly Actor Charles Maginnis Brandon Wellesley Actor John Maynard Lt. Warren Actor Christopher Mitchum Donald Brady Actor Patrick Moran Dr. Lynch Actor, Screenwriter, Producer Gersh Morningstar Mr. Esper Actor Jack Nieberlain Driver Actor Paul Austin Sanders Mutating Husband Actor Keith Tuxhorn The Fixer Actor Catherine Walsh Dr. Phillips Actor Rebecca Wicks Mutating Pregnant Wife Actor Steve Zurk Mike Reardon Actor Jim Wynorski Producer Fred Olen Ray Executive Producer Maxwell J. Beck Cinematographer Clare Doyle Film Editing Jeffrey Walton Original Music Buzz Bradenton Production Design Guillaume DeLouche Set Decoration