Suggestions by @scoobydoo_fan_club

Frank Welker

as Scooby Doo in Scooby-Doo! and the Alien Invaders

Score: +1

Brenton Thwaites

as Shaggy Rogers in Scooby-Doo! and the Alien Invaders

Score: +1

Ariel Winter

as Velma Dinkley in Scooby-Doo! and the Alien Invaders

Score: +1

Madelaine Petsch

as Daphne Blake in Scooby-Doo! and the Alien Invaders

Score: +1

Alex Pettyfer

as Fred Jones in Scooby-Doo! and the Alien Invaders

Score: +1

Daisy Ridley

as Laura in Scooby-Doo! and the Alien Invaders

Score: +1

Kevin Michael Richardson

as Sergio in Scooby-Doo! and the Alien Invaders

Score: +1

Shemar Moore

as Max in Scooby-Doo! and the Alien Invaders

Score: +1

Candi Milo

as Amber in Scooby-Doo! and the Alien Invaders

Score: +1

Auliʻi Cravalho

as Crystal in Scooby-Doo! and the Alien Invaders

Score: +1

James Franco

as Steve in Scooby-Doo! and the Alien Invaders

Score: +1

Rebel Wilson

as Dottie in Scooby-Doo! and the Alien Invaders

Score: +1

Christopher Lloyd

as Lester in Scooby-Doo! and the Alien Invaders

Score: +1

Toby Kebbell

as Skeleton Gladiator in Scooby-Doo and The Cyberchase

Score: +1

John Cena

as Creeper in Scooby-Doo and The Cyberchase

Score: +1

Jim Carrey

as Phantom Virus in Scooby-Doo and The Cyberchase

Score: +1

KJ Apa

as Bill McLemore in Scooby-Doo and The Cyberchase

Score: +1

Willem Dafoe

as Professor Robert Kaufman in Scooby-Doo and The Cyberchase

Score: +1

Joel McKinnon Miller

as Officer Wembley in Scooby-Doo and The Cyberchase

Score: +1

Andy Serkis

as The Tar Monster in Scooby-Doo and The Cyberchase

Score: +1