A tank is another class type according to the system of the Holy Trinity. A tank holds the aggro of the mobs and is responsible for having them attack him instead of damage dealers or healers. Basically, there are two different types of tanks. An avoidance tank tries to dodge damage as much as possible and avoid it; an absorb tank takes it in a reduced manner and needs to be healed regularly. Tanks often have a special status within groups. They are often expected to take the lead.