10/05/2012 09:07 am ET Updated Oct 05, 2012

Rutger Hauer Joins 'True Blood' And More Casting News

Rutger Hauer is sinking his teeth into a "True Blood" role. According to TVLine, Hauer will be a series regular when "True Blood" returns for Season 6.

The "Blade Runner" actor will play Macklyn, a mysterious figure with ties to Sookie and Jason. Could he have to a role in the murder of the Stackhouse parents?

Hauer's other TV credits include "Smallville" and "Alias."

"True Blood" will return to HBO in the summer of 2013.

In other casting news ...

"Fringe" has tapped Jill Scott for a role in the final season.
Scott will play Simone, an oracle-like character. [THR]
Josh Groban is heading back to "The Office." Groban will reprise his role of Walter Jr., Andy's little brother, in a November episode of the NBC comedy. [TV Guide]

Tom Arnold will guest star on "Hawaii Five-0."
Arnold will play the villain of the ninth episode and somehow Girl Scouts are involved. [TV Guide]

Melanie Lynskey is coming back to "Two and a Half Men."
Lynskey's Rose will be in two episodes this season, this time with her sights set on Walden. [EW]

Vanessa Marcil will guest star on "Hawaii Five-0."
The "General Hospital" star will play a therapist. [TVLine]

"Off the Map" star Martin Henderson has joined a new NBC pilot.
Henderson will play Kyle, a former flight surgeon/astronaut in "The Secret Lives of Husbands and Wives." [THR]

Ivan Sergei will romance Jeri Ryan on "Body of Proof."
Sergei will guest star as Sergei (coincidentally), a mysterious man who catches Kate's eye. [TVLine]

Tegan and Sara will appear and perform on "90210."
The indie group will appear in the Christmas-themed episode. [TVLine]

"True Blood" Season 5 Character Posters