Suggestions by @luisperezcozar

Benjamin Diskin

as Miek in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Benjamin Diskin

as Skaar in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Kate Micucci

as Velma Dinkley in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Eliza Dushku

as She-Hulk in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Grey DeLisle

as Daphne Blake in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Seth Green

as A-Bomb in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Clancy Brown

as Red Hulk in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Frank Welker

as Fred Jones in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Matthew Lillard

as Shaggy Rogers in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Fred Tatasciore

as Hulk in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Frank Welker

as Scooby-Doo! in Scooby-Doo! & Hulk and the Agents of S.M.A.S.H.

Steven Weber

as Scarlet Goblin in Scooby-Doo! & Ultimate Spider-Man

Steven Weber

as Ultimate Goblin in Scooby-Doo! & Ultimate Spider-Man

Eric Bauza

as Swarm in Scooby-Doo! & Ultimate Spider-Man

Christopher Daniel Barnes

as Wolf Spider in Scooby-Doo! & Ultimate Spider-Man

Christopher Daniel Barnes

as Electro in Scooby-Doo! & Ultimate Spider-Man

Diedrich Bader

as Kraven the Hunter in Scooby-Doo! & Ultimate Spider-Man

Dante Basco

as Scorpion in Scooby-Doo! & Ultimate Spider-Man

Dee Bradley Baker

as Sandman in Scooby-Doo! & Ultimate Spider-Man

Dee Bradley Baker

as Carnage in Scooby-Doo! & Ultimate Spider-Man