Chuck Norris ?
The clue is in the shape of the reveal.......is it Mister T ??.....on second thoughts maybe not !!!
Galen from the original planet of the apes TV series ?
if I'm allowed another guess, I'd hazard at Patrick Stewart's bestie Sir Ian McKellen. Was going to go for one of those 2. lol
Ray Winstone
Robin Williams, maybe Harrison Ford, or Canine Supervisor.
Jeff Bridges