On April 15, 2009 casting details were announced regarding The Twilight Saga: New Moon bringing many new names on board to fill spots for Volturi and Quileute characters.
I have to say that the casting of the Volturi members is stellar, bringing familiar faces and new players to the film, however all feel that they will settle in nicely as old world vampires of the Italian coven. First up we have Michael Sheen cast as Aro, the Volturi leader and I am thrilled with this choice. I have been impressed with Michael Sheen from the first Underworld film where he plays Lucian, the head werewolf. He reprised the role of Lucian for both Underworld: Evolution and Underworld: Rise of the Lycans, but don't fret if you think he's stuck in a genre pigeon hold. He ain't. Other credits include Tony Blair in The Queen and Frost in Frost/Nixon and every performance was spot on. Two more familiar faces are Jamie Campbell Bower who is cast as Caius and Cameron Bright as Alec, both fantastic choices as they have successfully brought eerie or otherworldly performances in previous roles. Jamie Campbell Bower played the love struck Anthony in Sweeney Todd: The Demon Barber of Fleet Street and Cameron Bright was the compelling Young Sean in Birth.
Further Volturi casting includes Charlie Bewley as Demetri, Daniel Cudmore as Felix, Christopher Heyerdahl as Marcus and Noot Seer as Heidi. Casting for the Quileutes includes Graham Greene as Harry Clearwater and Tinsel Korey is Emily.
We also have confirmation on the following returning cast from Twilight for New Moon: Billy Burke as Charlie Swan, Peter Facinelli as Carlisle, Elizabeth Reaser as Esme, Ashley Greene as Alice, Nikki Reed as Rosalie, Kellan Lutz as Emmett, Jackson Rathbone as Jasper, Edi Gathegi as Laurent and Rachelle Lafevre as Victoria.
Previous announcements included confirmation on returning cast from Twilight for New Moon are Kristen Stewart as Bella Swan, Robert Pattinson as Edward Cullen and Taylor Lautner as Jacob Black. New to the saga are Dakota Fanning as Jane and at the helm we have director Chris Weitz (The Golden Compass).
Source: Summit Entertainment Website (News Tab, 2009 Press Releases & News, April 15 — NEW MOON Start of Production)
The IMDb Page for The Twilight Saga: New Moon has been updated if you want to click around complete filmographies. For the photo inclined, I would recommend checking out Twilight-Headed for a full rundown of pictures of the new cast members.