Suggestions by @bumbleprime

Kristen Bell

as Fawn Allen in Transformers: Journeys (Earth Defense Command)

Caleb McLaughlin

as Ian Dixon in Transformers: Journeys (Earth Defense Command)

Elsie Fisher

as Sally Reynolds in Transformers: Journeys (Earth Defense Command)

Josh Hutcherson

as Stan Rogers in Transformers: Journeys (Earth Defense Command)

Mandy Moore

as Gwen Mills in Transformers: Journeys (Earth Defense Command)

Tom Kenny

as Ben Franklin in Transformers: Journeys (Earth Defense Command)

Russell Crowe

as Astrotrain in The Transformers

Michael Shannon

as Octane in The Transformers

Chris Hemsworth

as Ironhide in Transformers

Idris Elba

as Ultra Magnus in Transformers

Kevin Hart

as Jazz in Transformers

Amy Adams

as Arcee in Transformers

Jeffrey Combs

as Ratchet in Transformers

Steve Blum

as Starscream in Transformers

J.K. Simmons

as Shockwave in Transformers

Frank Welker

as Soundwave in Transformers

Frank Welker

as Megatron in Transformers

Zac Efron

as Bumblebee in Transformers

Peter Cullen

as Optimus Prime in Transformers

Adam Sandler

as Squidward Tentacles in Characters For Actors & Actresses To Play In Live Action