Skarsgård actually comes from a family of actors, His older brother, Alexander Skarsgård, was in the series Big Little Lies opposite Nicole Kidman and True Blood. He was also in The Stand, which is another Steven King classic. Their father, Stellan Skarsgård, appeared in the ever-popular film Good Will Hunting. Bill definitely takes the cake for creepiest character ever played, though.
Azog the Defiler - Manu Bennett
Azog the Defiler, also known as The Pale Orc, is one of the key villains in The Hobbit. Manu Bennett brought the role to life quite literally. Everything about this character was done in CGI, so he had to work extremely hard to make sure that the mannerisms and facial features looked good.
Bennett also starred in 30 Days of Night and Beta Test. He is certainly the most menacing character in The Hobbit, even with all of the post-production work. It's a shame that he's technically unrecognizable, but he is revered in the film industry for his work as Azog.
Emporer Palpatine - Ian McDiarmid
Emporer Palpatine underwent quite the transformation during the Star Wars films he was featured in. Scottish actor Ian McDiarmid took on the role of the powerfully evil character. At first, he didn't have much makeup to deal with. By the end of his Star Wars stint, his character had changed so much that he spent hours in the makeup chair.