The Zombie minion is created by using the skill Infection in order to kill an enemy.

The zombie minion is an ally to you, hostile to all other creatures (not tested with trader) and all other creatures are hostile to it.

Unknown if a zombie minions kills add to exp/form

If you try to move into a square in which the zombie minion is in you will attack the zombie minion, you do not get exp or form points for this and it does not turn hostile