Suggestions by @kianwatsony12

William Shatner

as Sentinel Prime (Movie) in Transformers: Legacy

Matt Wilkinson

as Diesel 10 in Legion of Doom!

Frank Welker

as Megatron/galvatron in Legion of Doom!

Jack Black

as Bowser in Legion of Doom!

Michelle Gomez

as Morag in Legion of Doom!

Jeremy Irons

as Scar in Legion of Doom!

Tom Baker

as Zeebad in Legion of Doom!

Tom Kenny

as Simon's Dad in Legion of Doom!

Donna Murphy

as Simon's Mom in Legion of Doom!

Lloyd Garmadon (Lego Ninjago)

as Alexander Hamilton in HamilTOON

Dan Gilvezan

as Cliffjumper (G1) in Transformers: Legacy

Garry Chalk

as Optimus Prime (G2) in Transformers: Legacy

Phil LaMarr

as Jazz (G1) in Transformers: Legacy

Hasbro

as Production Designer in Transformers: Legacy

Brian Blessed

as Sentinel Prime (G1) in Transformers: Legacy

Susan Blu

as Casting Director in Transformers: Legacy

Michael Bay

as Co-Producer in Transformers: Legacy

Transformers (Franchise)

as Based on in Transformers: Legacy

Travis Knight

as Director in Transformers: Legacy

Peter Cullen

as Optimus Prime (G1) in Transformers: Legacy