The Walking Dead: Dead City trailer confirms that a new villain, the Croat, kidnaps Maggie's son Hershel. The Croat knows Negan, which explains why Maggie recruits him to help rescue her son. This also sheds light on Negan's past, as the Croat's connection to him may hold clues to his earlier villainous life. The villains in The Walking Dead spinoffs are expected to be all-original takes on the Walking Dead universe. If the Croat is connected to Negan's distant past before he joined the show, Dead City will avoid any major The Walking Dead retcons.