Michael Rosenbaum says he will return as Lex Luthor for the 2-hour series finale of the U.S. television series "Smallville."

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The show, which chronicles the early years of the guy who becomes Superman, is set to wrap up its 10th and final season May 13.

Luther has been a recurring character throughout the show, but Rosenbaum hasn't been seen playing him since Season 7.

"I'm delighted to return for the series finale," Rosenbaum said in a statement issued to TVGuide.com.

"I'm simply doing it for all of the fans out there who made 'Smallville' the great success it is. I appreciate all of their passion, their relentlessness, and even their threats. Ha-ha."