With Michonne and the Governor, "The Walking Dead" is bringing two of the most famous characters from the comic to the screen for season 3 (which kicks off on AMC Oct. 14). But there will also be at least one completely new original character to join the fray. Dallas Roberts (who also starred on AMC's "Rubicon" and has a recurring role as Juliana Margulies' brother on "The Good Wife") will be stepping in to play Milton, one of the residents of the Governor-ruled community of Woodbury.

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