monster_human_grunt entityin the entity list. So, how does it behave? What enemies does it attack? Do allies kill them?
EDIT: I did a test map, and here are the results:
1. It looks to the player, but doesnt do nothing about it
2. You can kill him and gib him, and he will drop his weapon
3. Any enemy or ally will atack him, but he can only move
4. Looks like he cant attack