Originally Posted by metaphysician
Depends on whether he actually has a speaking part or not. Presuming he does have a speaking part in GotG, use the same guy. If not, you can keep the stunt man.
Which is to say, its not very important, because Thanos almost certainly won't be the main villain. :P
When you say "use the same guy" are you speaking of the guy who played him in the Avengers?
When you say "keep the stunt man" are you speaking of the guy who played him in the Avengers?
Isn't Damion Poitier both those guys?