Zac Efron. Photograph: Matias J. Ocner/TNS

Actors Zac Efron and Amanda Seyfried have been roped in to voice the characters of Fred Jones and Daphne Blake respectively in the upcoming animated Scooby-Doo feature film Scoob.

It was revealed earlier this month that Will Forte is set to voice Norville "Shaggy" Rogers, while Gina Rodriguez would be voicing Velma Dinkley. 

The mystery-solving teens and their talking Great Dane Scooby-Doo first appeared half a century ago on the animated TV series Scooby-Doo: Where Are You,? which was created by Hanna-Barbera and first aired in 1969.

Plot details of the movie involve the Scooby-Doo characters teaming up with other characters in the Hanna-Barbera universe to save the world from the evil Dick Dastardly.

Tony Cervone is directing Scoob. His credits include Space Jam, Cartoon Network's The Looney Tunes Show and Scooby-Doo! Mystery Incorporated.

Scoob will release on May 15, 2020.

The 2002 Scooby-Doo movie mixed live action actors with Scooby himself, who was computer-generated, as did Scooby-Doo: Monsters Unleashed two years later.

IANS