Congrats to Chad Coleman (who plays Tyreese) and Sonequa Martin-Green (who plays Sasha) who've been promoted to full-time series regulars in AMC's hit zombie series, The Walking Dead , which returns in October. As we saw in last weekend's season finale, both characters have now rejoined Rick at the prison. In addition, we haven't seen the last of The Governor, because David Morrissey will also be returning as a series regulars next season. What direction will the series take once October comes around? Creator of the series, Robert Kirkman , to THR the following: "[Rick] is letting the people of Woodbury in and tying to tell Carl that these people are like us, you have to be open to this and the only way to survive in this world is to have people and be in a community. That's going to be a big part of season four." So, we now officially have