Moving to the opposite side of the spectrum from Underworld, actor Michael Sheen has joined the cast of upcoming Twilight sequel New Moon.

The film focuses on Bella being drawn into the world of werewolves while threatened by the Volturi, an Italy-based coven of vampires.

Sheen previously played leader of the werewolves in Underworld, but will take on the role of Aro, the leader of the Volturi, in the upcoming film.

Shooting has already begun last month in Vancouver.