David Prowse is Darth Vader. Hayden Christensen is whiney brat Anakin Skywalker. Push that aside and ask who plays Darth Vader in numerous video games and productions made after Return of the Jedi and other Prowse-Lucas productions. Who needs to? When playing Rebel Assault II the Vader you see is covering the body of C. Andrew Nelson. It’s true in many other places.