Melissa, I guess that in GRRM books all characters are not good :)
I've read 5 of it but didn't see any tv series.
Tirion very intresting character. He shows how really small man may be very big human and he can influence world events.
I don't have favorite character. I like all of them. I like even Joffre at his death)))
Arya has been my favorite since the beginning. I'm so glad she's still alive! Haha! I will be very upset if Martin kills her. Tyrion has become one of my favorites as well. My feelings for his character have been quite a roller coaster. George R R Martin is an excellent author. Never before have I read books that kept me guessing who the "good guys" and "bad guys" are!