After solving their last mystery at Spooky Island, the Mystery Inc. gang is back in Coolsville, where they are being honored with their very own exhibit at the Coolsonian Criminology Museum. However, when a masked villain steals costumes of classic monsters on display and brings them to life, the gang must come out of retirement to solve the case.
Unfortunately the movie Scooby-Doo 2: Monsters Unleashed is not yet available on HBO Max.
| Writing | James Gunn | Writer |
| Sound | David Newman | Original Music Composer |
| Directing | Raja Gosnell | Director |
| Production | Charles Roven | Producer |
| Production | Richard Suckle | Producer |
| Production | Brent O'Connor | Executive Producer |
| Production | Kelley Smith-Wait | Executive Producer |
| Editing | Kent Beyda | Editor |
| Production | Joseph Barbera | Executive Producer |
| Camera | Oliver Wood | Director of Photography |
| Crew | Alette Falle | Stunts |
| Crew | Richard Brooks | Stunts |
| Crew | Ashlea Earl | Stunts |
| Visual Effects | Brian Dowrick | Animation |
| Visual Effects | Chris Lentz | Animation |
| Visual Effects | Jeff Croke | Animation |
| Directing | Steeve Boulianne | Layout |
| Visual Effects | Steve Harwood | Animation |
| Visual Effects | Andrew Arnett | Animation |
| Visual Effects | Steve Cady | Animation |
| Visual Effects | Matt Williames | Animation |
| Visual Effects | Hugo Dominguez | Visual Effects |
| Visual Effects | Leigh H. Rens | Animation |
| Crew | Bill Haller | Supervising Animator |
| Visual Effects | Angie Jones | Animation |
| Visual Effects | Kristin Solid | Animation |
| Production | Alan Glazer | Co-Producer |
| Production | Mary Vernieu | Casting |
| Production | James Gunn | Co-Producer |
| Production | Richard Cowan | Associate Producer |
| Crew | Nesta Chapman | Stunts |
| Crew | James Bamford | Stunts |
| Crew | J.J. Makaro | Stunt Coordinator |
| Crew | Doug Chapman | Stunts |
| Art | Shepherd Frankel | Supervising Art Director |
| Art | Don MacAulay | Art Direction |
| Art | Tedd Kuchera | Set Decoration |
| Costume & Make-Up | Leesa Evans | Costume Design |
| Art | Michael N. Wong | Art Direction |
| Art | Bill Boes | Production Design |
| Art | Brad Oleksy | Greensman |
| Crew | Ray Evans | Driver |
| Crew | Ronald Schlueter | Video Assist Operator |
| Crew | Joan Kelley Bierman | Post Production Supervisor |
| Crew | Patrick Booker | Carpenter |
| Crew | Tony Swatton | Armorer |
| Crew | Todd Shifflett | Digital Effects Supervisor |
| Lighting | Cory Hodson | Rigging Gaffer |
| Sound | David Husby | Production Sound Mixer |
| Camera | Rick Allen | Grip |
| Camera | Diyah Pera | Still Photographer |
| Crew | Michael Shand | CGI Supervisor |
| Crew | Dwane McIsaac | Chef |
| Sound | Gregory Jamrok | Orchestrator |
| Art | Peter Ochotta | Art Department Assistant |
| Camera | Sandes Ashe | First Assistant Camera |
| Art | Daphne Klebe | Art Department Coordinator |
| Camera | Dan Mannix | Steadicam Operator |
| Art | Constantine Sekeris | Conceptual Design |
| Art | Mira Caveno | Set Designer |
| Camera | Tim Arasheben | Helicopter Camera |
| Crew | Andy Armstrong | Stunt Coordinator |
| Crew | Nick Allen | Stunts |
| Crew | Steve Linn | Systems Administrators & Support |
| Art | Warren Dunlop | Construction Foreman |
| Camera | Glen A. Dickson | Additional Camera |
| Crew | Peter Huff | Transportation Coordinator |
| Lighting | Raymond Chen | Lighting Supervisor |
| Crew | Rick Rasmussen | Picture Car Coordinator |
| Lighting | Christopher Charles Kempinski | Lighting Technician |
| Camera | Steven J. Winslow | Camera Technician |
| Crew | Lance Johnson | Property Master |
| Art | Brent Gloeckler | Sculptor |
| Costume & Make-Up | Gitte Axen | Makeup Artist |
| Crew | Jim Rankin | Craft Service |
| Crew | Laura Boddington | Stand In |
| Editing | Matt Diezel | Assistant Editor |
| Costume & Make-Up | Anji Bemben | Hairstylist |
| Crew | László Sebõ | Technical Supervisor |
| Production | Daniel R. Chavez | Executive In Charge Of Post Production |
| Production | Bill Draper | Executive In Charge Of Production |
| Production | Kirk Johns | Location Manager |
| Costume & Make-Up | Bill Terezakis | Prosthetic Supervisor |
| Crew | Joey Lessard | CG Supervisor |
| Crew | Ivan Neulander | Software Engineer |
| Art | John Alvarez | Assistant Art Director |
| Art | Brian Shell | Construction Coordinator |
| Crew | Chris Bradford | Security |
| Crew | David Allinson | Special Effects Coordinator |
| Production | Brent O'Connor | Unit Production Manager |
| Production | Charles Lyall | Production Manager |
| Sound | Kelly Zombor | Boom Operator |
| Costume & Make-Up | Luisa Dalmagro | Set Costumer |
| Crew | Fernando Favila | Makeup Effects |
| Crew | Steve Ellis | Transportation Captain |
| Lighting | Ronnie Baran | Best Boy Electric |
| Production | Juliet Verni | Production Coordinator |
| Production | Rif Dagher | Researcher |
| Crew | Cody Laudan | Utility Stunts |
| Lighting | Tim Atkins | Gaffer |
| Lighting | John Lai | Lighting Artist |
| Production | Mandy Butler | Production Accountant |
| Production | Julia Frittaion | Publicist |
| Crew | Daniel Arkin | Visual Effects Editor |
| Sound | Markus Czyzewski | Music Editor |
| Sound | Darren Higman | Music Supervisor |
| Visual Effects | Melany Bourgouin | Visual Effects Coordinator |
| Visual Effects | Keith Hunter | Modeling |
| Editing | Valance Eisleben | Editorial Services |
| Sound | Mark Kenna | Dolby Consultant |
| Sound | Jeff Glueck | Sound Engineer |
| Sound | Chris Hogan | Sound Editor |
| Visual Effects | Laide Agunbiade | Digital Compositors |
| Visual Effects | Mathieu Blouin | Animation Supervisor |
| Visual Effects | Mike Splatt | Special Effects Supervisor |
| Visual Effects | Chris Bond | Visual Effects Supervisor |
| Visual Effects | David Zbriger | I/O Supervisor |
| Sound | Kerry Ann Carmean | Sound Effects Editor |
| Visual Effects | Benton Jew | Creature Design |
| Crew | Erika A. McKee | Digital Producer |
| Visual Effects | Stephanie Allen | Visual Effects Producer |
| Sound | Scott Wolf | Sound Designer |
| Sound | Michael D. Wilhoit | Supervising Sound Editor |
| Visual Effects | August Hall | Visual Development |
| Sound | Karen Schell | Sound |
| Visual Effects | Conrad Dueck | 3D Supervisor |
| Crew | Adam Shankman | Choreographer |
| Crew | Jeff Sanca | Stunts |
| Art | Tracy B. Dunlop | Set Dresser |
| Camera | Todd Hlagi | Dolly Grip |
| Art | Santino Barile | Assistant Property Master |
| Art | Perry Battista | Lead Set Dresser |
| Crew | Jason Crosby | Marine Coordinator |
| Crew | Barrie Wells | Techno Crane Operator |
| Costume & Make-Up | Stacey Butterworth | Wig Designer |
| Camera | Jim Filippone | Helicopter Camera |
| Camera | Tim Hogan | Key Grip |
| Costume & Make-Up | Alison Fraser | Costume Coordinator |
| Crew | Jim Filippone | Pilot |
| Directing | Richard Cowan | First Assistant Director |
| Directing | Misha Bukowski | Third Assistant Director |
| Editing | Mo Henry | Negative Cutter |
| Directing | David Klohn | Second Assistant Director |
| Lighting | Dennis Brock | Chief Lighting Technician |
| Production | Jody Chow | Assistant Production Coordinator |
| Sound | Jeff Carson | Supervising Music Editor |
| Sound | Kelly Oxford | ADR Editor |
| Production | James McKenzie Moore | Casting Assistant |
| Sound | David Kudell | Assistant Sound Editor |
| Sound | Laura Harris Atkinson | Supervising Dialogue Editor |
| Sound | Tom Boyd | Musician |
| Visual Effects | Adam de Bosch Kemper | Pre-Visualization Supervisor |
| Visual Effects | Kelvin Lee | Lead Animator |
| Visual Effects | Mitch Gates | Visual Effects Technical Director |
| Sound | Diana Stata | Assistant Music Supervisor |
| Crew | Anne Fletcher | Choreographer |
| Crew | Scott Nicholson | Stunts |
| Crew | Claude Bouchard | Stunts |
| Crew | David Mylrea | Stunts |
| Crew | Mitchell A. Lee Yuen | Stunts |
| Crew | Brad Loree | Stunts |
| Crew | Deb Macatumpag | Stunts |
| Crew | Leanne Buchanan | Stunts |
| Crew | Bill Edwards | Stunts |
| Crew | Heath Stevenson | Stunts |
| Crew | Beverly Knight | Stunts |
| Crew | Tom Farr | Stunts |
| Crew | Todd W. Nobles | Stunts |
| Crew | Brian Lydiatt | Stunts |
| Crew | James Bamford | Martial Arts Choreographer |
| Crew | Melissa Barker | Stunts |
| Crew | Laurence Todd Rosenthal | Stunts |
| Crew | Dustin Brooks | Stunts |
| Crew | Brent Connolly | Stunts |
| Crew | Nicholas Harrison | Stunts |
| Crew | Michele Waitman | Stunts |
| Crew | Dave Hospes | Stunts |
| Crew | Gaston Morrison | Stunts |
| Crew | Angela Uyeda | Stunts |
| Crew | Paul Becker | Stunts |
| Crew | Jim Bentley | Stunts |
| Crew | Cotton Mather | Stunts |
| Crew | Melissa R. Stubbs | Stunts |
| Directing | John MacCarthy | Second Unit First Assistant Director |
| Crew | Crystal Dalman | Stunts |
| Visual Effects | Peter Crosman | Visual Effects Supervisor |
| Sound | Laura Ziffren | Music Supervisor |
| Crew | Darya Douglas-Andres | Special Effects Assistant |
| Camera | Harold Bernard | Second Assistant Camera |
| Sound | Eric Gotthelf | ADR Mixer |
| Lighting | Herb DeWaal | Key Rigging Grip |
| Costume & Make-Up | Elizabeth Beauchamp | Costumer |
| Visual Effects | Cheryl Budgett | 2D Supervisor |
| Camera | Jim Van Dijk | First Assistant "A" Camera |
| Production | Suzie Bruce | Assistant Accountant |
| Crew | Jason Piccioni | Digital Supervisor |
| Camera | Michael Lemmers | Best Boy Grip |
| Sound | James Moriana | Foley Artist |
| Crew | Jim Dunn | Stunt Double |
| Editing | Lionel Barton | Colorist |
| Editing | Ron Barr | Digital Intermediate Editor |
| Costume & Make-Up | Tamar Ouziel | Assistant Makeup Artist |
| Costume & Make-Up | Cydney Cornell | Hairdresser |
| Visual Effects | Will Cunningham | Compositing Artist |
| Directing | Andy Armstrong | Second Assistant Director |
| Crew | Mike Larivee | Special Effects Technician |
| Editing | Anthony Harris | Digital Color Timer |
| Crew | Jay Anderson | Generator Operator |
| Art | Brom | Storyboard Artist |
| Sound | David Newman | Conductor |
| Directing | Joanna Moore | Second Second Assistant Director |
| Art | Leah Hong | Graphic Designer |
| Sound | Nerses Gezalyan | Foley Mixer |
| Visual Effects | Lindsay Hallett | Visual Effects Production Manager |
| Visual Effects | Whitney Kitchen | Animation Coordinator |
| Production | Stephanie Boeke | Extras Casting |
| Costume & Make-Up | Rob Miller | Contact Lens Technician |
| Camera | Jim Bacon | Epk Producer |
| Editing | James Bluma | Assistant Editor |
| Production | Jina Johnson | Assistant Location Manager |
| Lighting | Jeff Hall | Assistant Chief Lighting Technician |
| Production | Barbara Copp | Key Production Assistant |
| Visual Effects | Marta Knudsen | Matte Painter |
| Crew | Jim Bach | Playback Coordinator |
| Art | Shaun Bullied | Set Painter |
| Art | Sean Lavoie | Paint Coordinator |
| Production | Errin Lally | Casting Coordinator |
| Visual Effects | Jacques Levesque | Compositing Supervisor |
| Production | Eve-Marie Gingras | Production Supervisor |
| Production | Jamie Reid Tait | Second Assistant Production Coordinator |
| Sound | Kimaree Long | Dialogue Editor |
| Sound | Michael Buffer | Musician |
