5. Kevin Grevioux
Kevin Grevioux is a very scary looking man. He is probably most famous for playing the Lycan 'Raze' in the Underworld series of films - Raze being the right-hand-man of the Lycan leader 'Lucien' (Michael Sheen). As well as his suitable appearance, Grevioux also has a very suitable voice for the role, having loaned it to major villains such as Terrax and Solomon Grundy in television's Earth's Mightiest Heroes and The Batman respectively. It is this trait in particular that could land him the role of an authoritative villain like Darkseid or Thanos. For most of Grevioux's career he has tended to play henchmen and grunts, but a role like that of Darkseid or Thanos could be a great opportunity for him to make the full step in to the limelight.