File:WOTLK Arthas Steve Hui explored idea.jpg

Summary
Concept art by Steve Hui:
 * "On WOTLK we explored different ideas of how arthus would look like, in this piece i imagined him to be totally immersed with nerzul, the lich king armor. i focused more on how arthus and the helm merged to one incorporating elements of his helm into his face and head. the body isn't too finished as i mainly focused on the head. it would later be decided that arthus would remain the same as we last saw him in the warcraft 3 expansion, except he's armor would be updated and detailed alot more...who has two thumbs and worked on the details of arthus, (pointing at myself with both thumbs like an idiot) this guy...."

Source
http://stevehu1.blogspot.com/2008/10/wraith-of-lich-king-cinematic-artbook.html