Here is a great interview with Chris Heyerdahl (say that last name 3 times) and Lori from Twilight Lexicon at a Miami convention. A very informative interview so get to know Chris!

Part 1 Why Chris took the part of Marcus. His background in the Sci-fi world and love of acting. How Twilight differs in acting for him.

Part 2 Chris talks Stephenie & researching the role of Marcus. Make up & his own thoughts on the character and how he relates to the rest of the Volturi.