by jakecarol
I hav a ton of appropriate minis. Hasslefree (as mentioned above) make some great ones, as do EM4, Copplestone, Studio Miniatures (including some Walking Dead and other movie types and a ton of fantastic zombies).The Zombies! board game minis are going to be smaller, but if that does not bother you, go for it. Wargames Factory make some plastic zombies, but they need to be assembled and compared to some of the metal figures out there are not as detailed (but the price is fantastic and they just released a female zombie set that is pretty nice).
There are a couple threads on BGG for custom characters where myself and others have shown some of our figures and how we intend to use them in the game.
Jake