2. Robert Downey Jr.
Walt Disney PicturesRobert Downey Jr. may be known for his brilliant wit and ability to provide classy comic relief to tense situations as Tony Stark in the Iron Man series, but the actor is extremely versatile, able to provide serious performances that mirror his sassy wit perfectly. Its for this reason that the performer would make an excellent supporting character for a games main protagonist, in much the same way as Seth Green was with Joker in the Mass Effect series. By no means does this imply Downey Jr. could only perform a supporting role. He could just as easily play a leading role in Rockstars Grand Theft Auto games. For a series that prides itself on its satire of American culture, having Downey Jr. play a character in their intricately crafted worlds would be a great fit for the actor.