Suggestions by @cw1234

Julian Bleach

as Megatron in Transformers

Kiefer Sutherland

as Optimus Prime in Transformers

Michael Chiklis

as Ironhide in Transformers

Dominic Purcell

as Ironhide in Transformers

Bill Paterson

as Humans in Transformers: Mission: UK

Naoko Mori

as Humans in Transformers: Mission: UK

Claire Rushbrook

as Humans in Transformers: Mission: UK

Elodie Grace Orkin

as Pacifica Northwest in Gravity Falls (Live Action Film)

Michael Chiklis

as Ironhide in Transformers/G.I. Joe Crossover

Jude Law

as Megatron in Transformers/G.I. Joe Crossover

Julian Bleach

as Galvatron in Transformers: Age of Extinction (2022)

Simon Pegg

as Ratchet in Transformers: more than meets the eye

Jerry Bruckheimer

as Producer in Transformers: more than meets the eye

David Yates

as Director in Transformers: more than meets the eye

Alfonso Cuarón

as Director in Transformers: more than meets the eye

Antoine Fuqua

as Director in Transformers: more than meets the eye

Jon Bernthal

as Ironhide in Transformers: more than meets the eye

Michael Chiklis

as Ironhide in Transformers: more than meets the eye

Dominic Purcell

as Ironhide in Transformers: more than meets the eye

Kiefer Sutherland

as Optimus prime in Transformers: more than meets the eye