Callum Blue

Callum Blue is returning to Smallville, TVGuide.com has learned exclusively.

Blue, 33, will reprise his role as Zod, Clark's sworn enemy who tried to take over the world in Season 9. He was last seen being sucked into a one-sided portal that leads to New Krypton.

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He'll appear in one of the final five episodes of the series.

Blue is best known for his roles on The Tudors and Dead Like Me.