Given its massive size, the Tyrannofex is ungainly and prone to being overwhelmed when engaged in a long melee battle. However, the Tyranid Hive Mind has adapted this biomorph to compensate for this weakness. When the Tyrannofex finds itself in difficulty, it can emit a stress pheromone that attracts other Tyranid bioforms more suited to close combat. Once the primary threat is eradicated, the Tyrannofex can then return to its primary goal of blasting the enemy with its fearsome bio-weaponry.