Desperate for companionship, the repressed Willard befriends a group of rats that inhabit his late father's deteriorating mansion. In these furry creatures, Willard finds temporary refuge from daily abuse at the hands of his bedridden mother and his father's old partner, Frank. Soon it becomes clear that the brood of rodents is ready and willing to exact a vicious, deadly revenge on anyone who dares to bully their sensitive new master.
| Directing | Glen Morgan | Director |
| Writing | Glen Morgan | Screenplay |
| Production | Glen Morgan | Producer |
| Production | James Wong | Producer |
| Production | Richard Brener | Executive Producer |
| Production | Bill Carraro | Executive Producer |
| Production | Toby Emmerich | Executive Producer |
| Sound | Shirley Walker | Original Music Composer |
| Camera | Robert McLachlan | Director of Photography |
| Editing | James Coblentz | Editor |
| Production | John Papsidera | Casting |
| Production | Heike Brandstatter | Casting |
| Production | Coreen Mayrs | Casting |
| Production | Wendy O'Brien | Casting Associate |
| Art | Mark S. Freeborn | Production Design |
| Art | Catherine Ircha | Art Direction |
| Art | Mark Lane | Set Decoration |
| Costume & Make-Up | Gregory Mah | Costume Design |
| Art | Catherine Schroer | Assistant Art Director |
| Costume & Make-Up | Laurie Giles | Assistant Costume Designer |
| Sound | Thomas Milano | Music Editor |
| Directing | Christine Lalande | Script Supervisor |
| Directing | Helga Ungurait | Script Supervisor |
| Visual Effects | Scott Edelstein | 3D Supervisor |
| Visual Effects | Daniel Robichaud | Animation Supervisor |
| Visual Effects | Cliff Mueller | Animation |
| Crew | Bob Comer | Special Effects Coordinator |
| Crew | Robert J. Scupp | Special Effects Coordinator |
| Visual Effects | Greg Baxter | Visual Effects Coordinator |
| Visual Effects | Bridgitte Krupke | Visual Effects Coordinator |
| Crew | Kosta Saric | Visual Effects Editor |
| Visual Effects | Robin Griffin | Visual Effects Producer |
| Visual Effects | Mandy Tankenson | Visual Effects Producer |
| Visual Effects | Tiffany Smith | Visual Effects Producer |
| Visual Effects | Kelly L'Estrange | Visual Effects Producer |
| Visual Effects | Stuart Robertson | Visual Effects Supervisor |
| Costume & Make-Up | John Quaglia | Hairstylist |
| Costume & Make-Up | Tanya Hudson | Makeup Artist |
| Costume & Make-Up | Sandy Cooper | Makeup Artist |
| Sound | Jon Title | Sound Designer |
| Sound | Dave McMoyler | Sound Designer |
| Sound | Kelly Oxford | Sound Effects Editor |
| Sound | Scott Sanders | Sound Effects Editor |
| Sound | Melissa Sherwood Hofmann | Sound Re-Recording Mixer |
| Sound | J. Stanley Johnston | Sound Re-Recording Mixer |
| Sound | Dave McMoyler | Supervising Sound Editor |
| Camera | Casey Hotchkiss | Camera Operator |
| Camera | Tenzin Lhalungpa | Camera Operator |
| Camera | Bruce MacCallum | Camera Operator |
| Camera | Douglas Curran | Still Photographer |
| Camera | Pierre Vinet | Still Photographer |
| Editing | George McCarthy | First Assistant Editor |
| Writing | Gilbert Ralston | Original Film Writer |
| Camera | Michael Wrinch | Second Unit Director of Photography |
| Sound | Michelle Pazer | Dialogue Editor |
| Sound | Frederick H. Stahly | Dialogue Editor |
| Sound | Kimaree Long | ADR Editor |
| Sound | Hector C. Gika | Foley Supervisor |
| Sound | Jeffrey Wilhoit | Foley Artist |
| Sound | James Moriana | Foley Artist |
| Sound | Tami Treadwell | ADR Recordist |
| Sound | Brian Basham | ADR Recordist |
| Sound | Nerses Gezalyan | Foley Mixer |
| Writing | Stephen Gilbert | Novel |
| Crew | Bradley Parker | CG Supervisor |
| Crew | Rick Pearce | Stunt Double |
| Costume & Make-Up | Cheri Montesanto | Special Effects Makeup Artist |
| Directing | H.H. Cooper | First Assistant Director |
