There are still too many characters that very little has been done with, so we might as well toss out T-Dog, Beth, and Patricia (though she does play an incredibly naive and idiotic role in the comics during a future camp setting).
T-Dog's single "WHO'S THAT?!?!?!?!?" line in the lastest episode when they brought the new kid to the farm made me laugh. They are doing absolutely NOTHING with the character. T-Dog doing so little every episode has become a running joke.
I pray I don't get accused of racism with this post, but the early arcs of the comic had zero black characters, except the father and son for an issue. Even down to his name, T-Dog is feeling a bit token to me, and I'm wondering if he'll be killed off as soon as certain other characters are introduced later on.