Sorry for the short story, but necessary..
(printed version shown is only 7cm tall, very tiny)
This Lich King hi res model is an example of reverse-reverse engineering a game character mesh. If you have ever been into making games, usually it's the other way around - you rely on the game engine to do all the fancy shading, modifiers and texture mapping to make a low poly model look good, the less poly's the smoother the frame rate and so on... it's not rocket science. A cruddy model can have a smoother applied in real time to avoid the square edges etc, so if you have ever wondered why the models look so bad that are taken from the warehouse, this is usually why, they were originally designed for a game, not printing (some of them designed well before 3D printing)
I have included a picture of the original mesh file, which was pretty much unprintable without fixing , so I fixed all that first and then did a resculpt on it in blender, increased poly's
It still needs alot of work! I have done no detail sculpting in it at all... its a basic smooth job for now so it doesnt print out looking like Lara Crofts's boobs.