Suggestions by @andrewwhite

Timothée Chalamet

as Shaggy Rogers in Mystery Inc

Zendaya

as Daphne Blake in Mystery Inc

Hailee Steinfeld

as Daphne Blake in Mystery Inc

Emma Watson

as Daphne Blake in Mystery Inc

Naomi Scott

as Daphne Blake in Mystery Inc

Lily James

as Daphne Blake in Mystery Inc

Pete Davidson

as Shaggy Rogers in Mystery Inc

Liam Hemsworth

as Fred Jones in Mystery Inc

KJ Apa

as Fred Jones in Mystery Inc

Robbie Amell

as Fred Jones in Mystery Inc

Alexander Ludwig

as Fred Jones in Mystery Inc

Dylan O'Brien

as Fred Jones in Mystery Inc

Maisie Williams

as Velma Dinkley in Mystery Inc

Kaitlyn Dever

as Velma Dinkley in Mystery Inc

Millie Bobby Brown

as Velma Dinkley in Mystery Inc

Jenna Ortega

as Velma Dinkley in Mystery Inc

Frank Welker

as SCOOBY DOO in Mystery Inc

Frank Grillo

as Scooby Doo in Mystery Inc

Keith Silverstein

as Bolivar trask in X-men Children of the Atom

Noah Emmerich

as Senator Robert Kelly in X-men Children of the Atom