After 6 years since filming and production on Transformers Revenge of the Fallen, the dinobots have been rumored many times to appear in the films when they were not really confirmed. But now that the Dinobots are finally and officially confirmed to appear in Transformers Age of Extinction, the 4th film of the Transformers Cinematic Universe, everyone is going to be so thrilled to see how they will turnout in the movie and to who will voice their leader Grimlock since Gregg Berger isn't up to reprise his role.
Now take a good look at this picture of Grimlock below
With Optimus Prime riding the dinobot it speculates on what Grimlock will look like in the movie this summer and because Grimlock is a big and fierce dinobot with the form of a tyrannosaurus rex, Michael Bay will definately have someone with a bold and epic. Someone like;
Arnold Schwarzenegger
Formerly the 38th governor of California, Arnold Schwarzenegger is best known to the world as "The Terminator" and other than his roles as a muscular action man, he does have quite a bold and dramatic voice so impressive that he would indeed fit the voice for Grimlock in the live action films.
If not Schwarzenegger then it might as well be one of these guys:
Fred Tatasciore (Hulk)
Kevin Michael Richardson (Bulkhead/Joker/Shadowking/Man Ape)
JB Blanc (Bane)
Bob Glouberman (Rhino)
Kevin Grevioux (Solomon Grundy/Terrax)
Rick D. Wasserman (Thor/Clayface/Planet Hulk)
Phil Idrissi (Mobsters/Enforcers in Arkham Origins)
or
James Horan (Smaug)
feek free to choose who you think has the voice for Grimlock's cinematic version in the Transformers Cinematic Universe or comment on who else that is not on this list should voice the massive dinobot as well