Tyrion - Dinklage
The blonde dragon chick
The red headed brothel lady (Ros?)
Joffrey but only because he's so bad. It's like they force you to hate him and that's cool.
I've heard the name Jon Snow a lot, but have no idea how the character develops. Right now he just seems like a little bitch. Based on his popularity I'm guessing he'll get added to the list at some point.
And I'm done. Took me a little less than a month, but I finished the entire series. I have to give this show a 10. I'm sure I could find things to nitpick, but in all honesty, everything good about this show far outweighs the few bad things.
Ramsay Bolton is probably my favorite villain on any series. Cersei might be a close second.