- Monstrous Creature. - A Tyrannofex is a monstrous battle-fortress species of Tyranid. - Its bulk, armour and weaponry makes it a match to, or even goes beyond, its foe's most powerful battle tanks constructed of more conventional technology - A Tyrannofex has a massive cannon fused with its torso, the largest and most destructive Tyranid weapon carried by anything smaller than a Bio-Titan.