Pre-transformation Mutators are easily identified by their emaciated, bony appearance and sunken eye sockets. Don’t be fooled! They’ll change forms and mess you up, if you’re not careful. If you see an exceptionally skinny zombie, rip into it with everything you’ve got before it has a chance to change. A good place to find Mutators is in the southeast corner of Beverly Hills, as demoted by an icon in the mansion there. Check other regions on your map for Mutator hotspots, too.