Brian Austin Green is Smallville's Metallo

Brian Austin Green, who starred on Terminator: The Sarah Connor Chronicles, has been cast on Smallville as a villain, kryptonite-powered cyborg Metallo.

TV Guide reports that the 35-year-old actor will appear in at least the first two episodes of Season 9, which premieres Friday, Sept. 2.

Originally, B.A.G. was supposed to join another CW series, One Tree Hill, but the deal fell through. That role went to former Lipstick Jungle hunk Robert Buckley instead.