 | Jeremy Ray Taylor als Sonny Quinn |
 | Madison Iseman als Sarah Quinn |
 | Caleel Harris als Sam |
 | Wendi McLendon-Covey als Kathey Quinn |
 | Ken Jeong als Mr. Chu |
 | Chris Parnell als Walter |
 | Bryce Cass als Tyler |
 | Peyton Wich als Tommy |
 | Shari Headley als Mrs. Carter |
 | Christian Finlayson als Cooper |
 | Matthew Jose Vasquez als Derek |
 | Courtney Lauren Cummings als Jess |
 | Jessi Goei als Maya |
 | Drew Scheid als Tyler's Crew |
 | Tyler Silva als Tyler's Crew |
 | Sydney Bullock als Vanessa |
 | Jason Looney als Terrified Parent Monster-Mr. Rennie |
 | Kendrick Cross als Sam's Father |
 | Déjá Dee als Mrs. Hoover |
 | Brick Jackson als Paramedic- TJ |
| Krishnan Viren Patel als Pharmacist |
| Hallie Jackson als Nana |
 | R.L. Stine als Science Award Presenter-Principal Harrison |
| Katharine C. Lumpkin als Monster Bride |
| Kent Wagner als Dead Pirate |
| Marsha Shackelford als Cyborg |
| Barry W. Jerald Jr. als Alien |
| Mary Tricia Froedge als Mummy |
| Robert Hunt als Mummy |
| Martin Skyler als Mummy |
| Grace Toso als Mummy |
| Calvin Wickham als Mummy |
| Taylor Williams als Mummy |
| Iyani Gwendolyn als Day of the Dead Lady |
| Cheniqua Litchmore als Day of the Dead Lady |
| Hali J. Ross als Day of the Dead Lady |
| Joe Marri als Goblin |
| Cody Jenkins als Goblin |
| Sherri Millican als Banshee |
| Scott Millican als Red Haired Ghoul |
| Joseph N. Hardin als Vampire |
| Alex T. Hill als Scarecrow |
| Benjamin Bladon als Royal Mummy |
 | Mick Wingert als Slappy (voice) |
 | Jack Black als R. L. Stine (uncredited) |
| Braylon Andrews als Club Goer / Highschool Student (uncredited) |
| Kaitlyn Bishop als Middle School Student (uncredited) |
 | Jasmine Bolton als Middle School Kid (uncredited) |
| Raphael Dante' Carr Jr. als Trick or Treater (uncredited) |
 | Darin De Paul als Terry / Angry Pumpkin (voice) (uncredited) |
 | Suehyla El-Attar als Teacher in Hole (uncredited) |
| Natsuki Hirota als Party Goer (uncredited) |
| Lacy Hudson als Trick-or-Treater (uncredited) |
 | Catherine Jerald als Monster (uncredited) |
 | Sawyer D. Jones als Trick-or-Treater (uncredited) |
| Serene Lee-Sng als School Teacher (uncredited) |
| Natalya MacDonald-Risner als Cowgirl Trick-or-Treater (uncredited) |
 | Gracie Marcellus als Middle Schooler (uncredited) |
 | Shaun McMillan als Middle School Principal (uncredited) |
 | Ivy O'Brien als (uncredited) |
| Arianna Jones als Cheerleader |
| Neal H. Moritz | Producer |
| Deborah Forte | Producer |
| R.L. Stine | Novel |
| Ari Sandel | Director |
| Rob Lieber | Screenplay |
| Salvador Pérez Jr. | Costume Design |
| Barry Peterson | Director of Photography |
| Adruitha Lee | Hair Department Head |
| Rich Delia | Casting |
| Rusty Smith | Production Design |
| Dominic Lewis | Original Music Composer |
| Keith Brachmann | Editor |
| David Rennie | Editor |
| Darren Lemke | Story |
| Rob Lieber | Story |
| Dawud Anyabwile | Art Department Assistant |
| Federico D'Alessandro | Storyboard Artist |
| David Esparza | Sound Designer |
| Tara Feldstein Bennett | Casting Director |
| Rubén Algarra | Visual Effects |
| Jeremy Conner | Stunts |
| Timothy M. Bourne | Producer's Assistant |
| Wes Campbell | Special Effects Technician |
| Matteo Veglia | VFX Production Coordinator |
| Timothy M. Bourne | Executive Producer |
| Tania Landau | Executive Producer |
| Derek Spears | Visual Effects Supervisor |
| Tom Akos | Stunts |
| Ben Aycrigg | Stunts |
| Trent Brya | Stunts |
| Laurence Chavez | Stunts |
| Sarah Reagin | Stunt Double |
| Edward W. Dabney | Stunts |
| Lucky Davis | Stunt Double |
| Loren Dennis | Stunts |
| Justin Charles Evans | Stunts |
| Noah Bain Garret | Stunts |
| Lex D. Geddings | Stunts |
| Michael Hansen | Stunts |
| Thirl Haston | Stunts |
| Jason Charles Hill | Stunts |
| Cassidy Alexandra Kahler | Stunts |
| Ryan Mari | Stunts |
| T. Ryan Mooney | Stunts |
| Josh Mueller | Stunts |
| Paul Andrew O'Connor | Stunts |
| Marque Ohmes | Stunts |
| Josh Petro | Stunt Double |
| Chris Schmidt Jr. | Stunts |
| Austin Seifert | Stunts |
| Robert Daniel Souris | Stunts |
| Gregory Lee Steinmetz | Stunts |
| Ashley Rae Trisler | Stunts |
| Jimmy Waitman | Stunts |
| Todd Warren | Stunts |
| Steven Ritzi | Stunt Coordinator |
| Timothy M. Bourne | Unit Production Manager |
| Joe Camp III | First Assistant Director |
| Kevin Lum | Second Assistant Director |
| Kendrick Wallace | Visual Effects Producer |
| Heath M. Howard | Production Supervisor |
| Paul D. Kelly | Art Direction |
| Jeanette Scott | Set Decoration |
| Katrina Rice | Property Master |
| Gail Hunter | Script Supervisor |
| Christopher TJ McGuire | Steadicam Operator |
| Jeff Crumbley | "A" Camera Operator |
| Jeffrey N. Civa | First Assistant "A" Camera |
| Trey Twitty | Second Assistant "A" Camera |
| Bill McConnell Jr. | Second Assistant "A" Camera |
| Stewart Smith | "B" Camera Operator |
| Fred Thomas | First Assistant "B" Camera |
| Rodrigue Gomes | Second Assistant "B" Camera |
| Justin Wells | Digital Imaging Technician |
| Jason Robbins | Camera Loader |
| Nick Cannon | Camera Loader |
| Johnna Thomas | Costume Supervisor |
| Jennifer Kamrath | Key Costumer |
| Ashley Bennett | Key Costumer |
| Jen Eden | Costume Coordinator |
| Jess L. Johnson | Costumer |
| Jordan Johnson | Costumer |
| Dustin Fletcher | Costumer |
| Ginger Knussmann | Costumer |
| Marcella Elisa Caudill | Costumer |
| Jae Hitch | Costumer |
| Dustin Angus | Costumer |
| Rebecca Shoemaker | Seamstress |
| Travis Pates | Makeup Department Head |
| Leo Satkovich | Key Makeup Artist |
| Erin Keith | Makeup Artist |
| Patrice Coleman | Makeup Artist |
| André Freitas | Makeup Artist |
| Amber Crowe | Makeup Artist |
| Bill 'Splat' Johnson | Special Effects Key Makeup Artist |
| Mary Everett | Key Hair Stylist |
| Tiffany Lord | Hairstylist |
| Rie Cangelosi | Hairstylist |
| James M. Cox | Chief Lighting Technician |
| Taylor Schultz | Lighting Technician |
| Mike Stppich | Lighting Technician |
| Reggie Hodge | Lighting Technician |
| Thomas H. Dean | Lighting Technician |
| Omar Browne | Lighting Technician |
| Kurt Kornemann | Key Grip |
| Shawn Knight | Best Boy Grip |
| Lea E. Miller | Dolly Grip |
| Charles Arnold | Grip |
| Zackary Arrington | Grip |
| Chip Huntington | Grip |
| David Iverson | Grip |
| Brian Malone | Rigging Grip |
| Steve C. Aaron | Production Sound Mixer |
| Troy A. Johnson | Boom Operator |
| Matthew B. Chamberlin | Location Manager |
| Mela Rayne | Assistant Location Manager |
| Joseph Patrick Miller | Assistant Location Manager |
| Samantha Merten | Assistant Location Manager |
| Sean Crane | Assistant Location Manager |
| Chip Clanton | Production Coordinator |
| Blake H. Hughes | Assistant Production Coordinator |
| Cody Hall | Assistant Production Coordinator |
| Justin A. Thuesen | Production Secretary |
| Greg Highsmith | Production Accountant |
| Curtis Crowe | Construction Coordinator |
| Sean Ryan Jennings | Assistant Art Director |
| Vincent Bates | Set Designer |
| Margaret Ditre | Set Designer |
| Lisa Yeiser | Graphic Designer |
| Jim Magdaleno | Storyboard Artist |
| Ray Harvie | Storyboard Artist |
| Brian McGee | Storyboard Artist |
| Dawud Anyabwile | Storyboard Artist |
| Ron Hammond | Art Department Coordinator |
| Erika Jennings | Art Department Assistant |
| Richard Blake Wester | Leadman |
| Sam Carter | Set Dresser |
| Jonathan Dossman | Set Dresser |
| Brett Fahle | Set Dresser |
| Adam Miller | Assistant Property Master |
| Elizabeth Driscoll | Unit Publicist |
| Daniel C. McFadden | Still Photographer |
| David Stickler | Second Second Assistant Director |
| Zach L. Smith | Second Second Assistant Director |
| Coco Kleppinger | Casting Associate |
| Mark Droter | Casting Assistant |
| Janella Bersabal | Extras Casting |
| Patrick Ingram | Extras Casting |
| Robert Foster Jr. | Transportation Coordinator |
| Hector Tapia | Transportation Captain |
| Timothy M. Bourne | Second Unit Director |
| Kevin Lum | Second Unit First Assistant Director |
| Jeff Crumbley | Second Unit Director of Photography |
| Kaylee Karlik | First Assistant Editor |
| Joe Binford Jr. | Assistant Editor |
| Peter Pav | Assistant Editor |
| Tateum Kohut | Sound Re-Recording Mixer |
| Greg Orloff | Sound Re-Recording Mixer |
| Sean McCormack | Supervising Sound Editor |
| David Esparza | Supervising Sound Editor |
| Eric A. Norris | Sound Designer |
| Benjamin L. Cook | Sound Effects Editor |
| Ando Johnson | Sound Effects Editor |
| Ryan Collins | Sound Effects Editor |
| Branden Spencer | Supervising ADR Editor |
| Laura Harris Atkinson | ADR Editor |
| Robert Troy | ADR Editor |
| Will Riley | Dialogue Editor |
| Eryne Prine | Foley Editor |
| Sarah Monat | Foley Artist |
| Robin Harlan | Foley Artist |
| Nerses Gezalyan | Foley Mixer |
| Howard London | ADR Mixer |
| Aaron Hasson | ADR Mixer |
| Tom Kramer | Music Editor |
| Nick Glennie-Smith | Conductor |
