main tank Generally, a main tank is first of all a tank. Beyond that, there are three possible definitions, which are all related to each other, but don't quite describe the same thing: In a raid, the main tank does most of the pulling and keeps the hardest hitting or most difficult mob(s) on himself. In a broader sense, a main tank is the player in a party that concentrates on keeping the mobs attacking him and only him, while the other players pick them off. A player acting as a tank becomes a main tank when he is equipped and experienced enough to allow the other members of the group to perform at the limit of their ability.