In this update i finish the scheme for npc_zombie, zombine and fastzombie. All 3 npc hammer entities now have support for selecting model spawn behavior to a fuller state. I started the code to degree to which you could select individually listed models precached into npc_zombie. now all 3 npcs handle selecting random or individual zombies and as well select random or individual skins for each model. all 3 npcs each handle 10 zombie models and 10 skins for each zombie.