Suggestions by @bumbleprime

Danny DeVito

as Henry Roberts in Transformers (2008)

Matthew Lillard

as Andrew Taylor in Transformers (2008)

Michael Keaton

as Agent George Kabat in Transformers (2008)

Dakota Fanning

as Alice Winter in Transformers (2008)

Chris Rock

as Mike Wilson in Transformers (2008)

Amy Adams

as Sally Winter in Transformers (2008)

Brendan Fraser

as Jack Adams in Transformers (2008)

Genie (Disney)

as Jim Carrey in Roles That Actors / Actresses Were ALMOST Casted

Tara Strong

as Slipstream in Transformers: Journeys (The Return Of Megatron)

Jim Cummings

as Thundercracker in Transformers: Journeys (The Return Of Megatron)

Richard Epcar

as Skywarp in Transformers: Journeys (The Return Of Megatron)

Dee Bradley Baker

as Astrotrain in Transformers: Journeys (The Return Of Megatron)

Charlie Adler

as Sunstorm in Transformers: Journeys (The Return Of Megatron)

Dan Castellaneta

as Octane in Transformers: Journeys (The Return Of Megatron)

Daran Norris

as Knockout in Transformers: Journeys (The Return Of Megatron)

Keith David

as Shockwave in Transformers: Journeys (The Return Of Megatron)

Jess Harnell

as Barricade in Transformers: Journeys (The Return Of Megatron)

Frank Welker

as Soundwave in Transformers: Journeys (The Return Of Megatron)

Steve Blum

as Starscream in Transformers: Journeys (The Return Of Megatron)

Frank Welker

as Megatron in Transformers: Journeys (The Return Of Megatron)