True-Blood.net has confirmed with HBO that Robert Patrick will guest star on True Blood season 5 as Jackson Herveaux, Alcide’s father. We’ll meet him in episode 5.09, “Everybody Wants to Rule the World”, when we flashback to when Alcide and Debbie Pelt were teenagers in the 1980s. Back then, Jackson was “powerful, inspiring, and heroic”, but in present day he’s pretty much given up on life. He’ll be a recurring guest star.
Robert has a lengthy list of credits, including Terminator 2, The X-Files, and the upcoming ABC drama Last Resort (I’ve seen the pilot; it’s on my Must See list for Fall).