npc hate all npcs and not players

[spider661]

how do i make a npc kos to all npcs but will like all players.. basically i want to make a npc walk somewhere and the players have to keep him alive but i want him to attack everything he sees or at the least make everything in the zone that don't like the player (anything with default kos faction) attack this npc also so while he walks all the npcs that would attack the player also attack the npc.