If the group does wind up heading to Alexandria, or some equivalent—while the series follows the same rough outline as the comics, they’ve never been afraid to put their own spin on events and plot points—there will be ample opportunity to introduce new faces. A couple of casting notes have led to some speculation about who we could see before long. Ross Marquand joined the cast and many suspect he plays Aaron, a resident of Alexandria who is a key piece moving forward. There has also been speculation that Jessie Anderson, another Alexandria resident could show up.
If they do arrive at the walled community, there will be plenty of chances for this, as there are many citizens and tons of potential storylines. Introducing new characters like this, not just zombie fodder, will open up a wide array of new possibilities story wise and as far as possibilities for character development go and keep things form growing stale.