Ten years ago, a young, lonely Shaggy Rogers befriends and adopts a talking stray Great Dane pup, whom he names Scooby-Doo. On Halloween night, Scooby and Shaggy meet three young detectives named, Fred Jones, Daphne Blake, and Velma Dinkley, before venturing into a haunted house. Inside, the kids encounter a ghost, whom they capture and unmask as costumed thief Mr. Rigby. Inspired by the experience, they decide to form a group, Mystery Inc., to solve mysteries together.
Frank Welker as Scooby-Doo and the vocal effects of the pterodactyls
Will Forte as Shaggy Rogers
Iain Armitage as young Shaggy Rogers
Mark Wahlberg as Brian Crown / Blue Falcon, the son of and the successor to Shaggy's lifelong idol, the original Blue Falcon (Radley Crown).
Jason Isaacs as Dick Dastardly, a criminal mastermind plotting to obtain treasure from the Greek underworld and rescue his dog Muttley.
Gina Rodriguez as Velma Dinkley
Ariana Greenblatt as young Velma Dinkley
Zac Efron as Fred Jones
Pierce Gagnon as young Fred Jones
Amanda Seyfried as Daphne Blake
Mckenna Grace as young Daphne Blake
Kiersey Clemons as Dee Dee Skyes, the aide of Blue Falcon who pilots the Falcon Fury.
Ken Jeong as Dynomutt the Dog Wonder, the robot dog sidekick of Blue Falcon and the lifelong idol of Scooby-Doo.
Tracy Morgan as Captain Caveman, a fur-covered caveman superhero who resides in Messick Mountain.
Billy West and Don Messick (archival laughs) as Muttley, the dog sidekick of Dick Dastardly.
Simon Cowell as himself, Mystery Inc.'s first investor.
Scoob! is a 2020 American computer-animated mystery comedy film based on Hanna-Barbera's Scooby-Doo franchise, produced by the Warner Animation Group and distributed by Warner Bros. Pictures. The film is directed by Tony Cervone from a screenplay by Adam Sztykiel, Jack Donaldson, Derek Elliott, Matt Lieberman, and Lieberman, Eyal Podell, and Jonathon E. Stewart. It stars the voices of Frank Welker as the titular character (the only current television cast member to feature), as well as Will Forte, Gina Rodriguez, Zac Efron, and Amanda Seyfried as Shaggy, Velma, Fred and Daphne respectively, and also features the voices of Mark Wahlberg, Jason Isaacs, Kiersey Clemons, Ken Jeong and Tracy Morgan as other Hanna-Barbera animated characters.