First of all their bubbles have a fire rate and minmax damage cap . Another reason shotguns are bad against bubbles because each pellet is counted separately And they now notice if their bubble has been damaged . Secondly , since this game is built around surviving with your abilities , especially tank frames , get a few of them around and you are as good as dead . The room is nullifierThere is no fun counterparts with them . Either you commit martyrdom entering the bubble , or you deal with the stupid bubble . Plus , they discourage build diversity . Their bubble is the most cancerous thing about them , until you hit a high enough level and the nullifier himself is tanky af . And just wait until you get an arctic nullifier eximus . The only thing worse than nullifier bubbles are Osprey AoEs . Yet , people don ' t seem to understand how broken their bubbles are .