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1935 7 1 David Prowse
I Am Your Father (2015) is a pretty damn good doc about the actor who played Vader that was never seen or heard. David Prowse
Two years before "Star Wars Episode V: The Empire Strikes Back" came out, David Prowse revealed that Darth Vader was Luke's father.
But yeah, body language is important when you have no visible face. See: David Prowse as Vader.
I'm sure Spencer Wilding is a cool guy, but David Prowse literally embodies the Darth Vader suit. At least give the guy a cameo