Zac Efron and Amanda Seyfried have joined the cast of Warner Bros.' Scooby-Doo animated feature "Scoob," an individual with knowledge of the project told TheWrap.
Efron will voice Fred, while Seyfried will play Daphne. Tony Cervone is directing, while Chris Columbus, Charles Roven, Pam Coats and Allison Abbate are serving as producers.
Gina Rodriguez will voice Velma, while Will Forte will play Shaggy and Tracy Morgan will voice Captain Caveman -- not part of the Scooby-Doo universe but a Hanna-Barbera character like the Scooby gang. Frank Welker will be voicing Scooby.
In the film, the Mystery Inc. group will team up with other members of the Hanna-Barbera universe to save the world from Dick Dastardly.
The last "Scooby" film to hit theaters was "Scooby-Doo: Monsters Unleashed" in 2004. That film made $84.2 million at the box office. It served as a sequel to 2002's "Scooby-Doo," which earned $153.3 million. The originally television series debuted in 1969, and many spin-off series have been produced since due to its success.
Efron most recently starred in "Extremely Wicked, Shockingly Evil and Vile" and "The Greatest Showman," and will next be seen opposite Matthew McConaughey in "The Beach Bum." He is represented by CAA, Alchemy Entertainment and Viewpoint.
Seyfried was last seen in "Mamma Mia! Here We Go Again" and will next appear in "The Art of Racing in the Rain" and "You Should Have Left." She is represented by Innovative Artists and Relevant.
Deadline first reported the news.