It's official!

Michael Rosenbaum has signed a deal to return as Lex Luthor for the series finale of Smallville, despite a report from last night that indicated he would not come back, according to TVLine. Here's what showrunners Brian Wayne Peterson and Kelly Souders had to say about the return of Lex Luthor.

"It feels like the stars are aligning, literally. We couldn't be more excited about having Michael back. And as far as the way he returns ... there'll be no doubt about how Lex becomes the great rival in Clark Kent's life. He is the villain of the story."

Michael Rosenbaum himself also chimed in on coming back for the conclusion of the show.

"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. I can't wait to hug the old crew back in Vancouver one last time and see all of my old friends once again... Oh, and for Lex to become the badass he's destined to be."

Rosenbaum also tweeted this tonight...

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"I'm excited to come back one last time. Just promise me you'll all watch my new stuff. Then we will be even. Haha. Rock the hell on friends!"

Michael Rosenbaum last appeared on Smallville in May 2008, for the Season 7 finale. We reported earlier this week that Smallville will air a two-hour series finale on Friday, May 13 from 8 PM ET to 10 PM ET.