I saw this at my local comic book shop. Looks pretty cool. Seems to be soft white plastic that you can paint in any fashion. About 4 inches tall, it can fit in with 3-3/4" scale figures and maybe even 5 inch figures, like the McFarlane Walking Dead figures.
After a little research online (Ebay) apparently there are some more. I'll have to open this bad boy up and see how will it can be painted and customized. May have potential for a zombie horde.
It's manufactured by EMCE Toys and is a Previews Exclusive.