Jamie Kennedy and Patrick Dempsey to join third Transformers picture Jamie Kennedy and Patrick Dempsey have joined the cast of Transformers 3. Dempsey told reporters that he will be playing a dark character in the third film in the franchise. Kennedy revealed to an Arizona radio station that he “may have a role in the movie”. Details on the actors’ possible roles in the Michael Bay directed film have not been announced. The film is expected to arrive in cinemas in 2011.