This is a pretty epic art project. Macedonia-based artist Тхе Мичо has created cartoon style art for 300 of the characters from George R.R. Martin's A Song of Fire and Ice book series. He actually made every single character. I'm not going to post them all here, but if you want to see them head on over to his Facebook page. It's a pretty incredible feat.
The characters' likenesses are based off of the descriptions in the books rather than what we've all seen in the HBO TV series. Of course, you're going to see similarities though. I've included The Hound, Tyrion, Ned, Dany, Jon Snow, Jamie, Jaquen, Brienne, Melisandre, Arya, and a few other characters.
The style kind of reminds me of Genndy Tartakovsky's Samurai Jack.