Directer Greg Nicotero dropped another hint about how the walkers will be used in Season 6, saying: "You have people that are basically utilising the people that they kill as ammunition to build a zombie armythey are setting booby traps everywhere so they can take peoples possessions and then use them to build the walkers in the traps. So its kind of a diabolical plan. One of the traps has already been rumbled, with 'red poncho man' being 'recruited' after falling foul of the trap triggered by Daryl and Aaron. Now for a look at who's setting these traps...