A rapper who goes by the name Common has boarded the cast of "Terminator Salvation: The Future Begins," Variety reported. He will join Christian Bale, Sam Worthington, Moon Bloodgood, and Anton Yelchin in the fourth installment of the series, which is shooting for a PC-13 rating.

Common is no rookie though. He has a couple of TV shows and movies under his belt, the most recent of which is "American Gangster."

However, knowing Hollywood, Common will probably play either the comic relief or a smack-talking tough guy.

McG will direct the movie and is slated for a May 22, 2009 release.

Here's Common's Myspace page.