Board Thread:Warhammer 40k General Discussion/@comment-6589306-20130228113457/@comment-25051723-20140621200816

The thing about Tyranids is that they have to steal biomass to adapt, with Xenomorphs having no such limitations when it comes to adapting their forms.

Indeed, the Xenomorph metaspecies is the perfect killing machine against the human race and other species. To illustrate this effectivity, Their jaws are capable of smashing through bone and metal, shooting out like a piston.

The Xenomorph Drone is the worker of the metaspecies, meant for construction of Hives and are solitary hunters. This caste produced the Xenomorph responsible for the killing on Nostromo.

The most numerous caste is that of the Warrior, who act as the Marine equivalent for the Xenomorph metaspecies.Through sheer numbers and strength, they overpower their foe though they're indeed capable of planning.

The Runner caste is spawned from animals, being a deadly solitary hunter capable of taking out a good deal of the population of a prison. Their speed and agility make them a deadly foe to face for normal humans, as shown by the fate of Fiorina 161.

Finally, the Praetorian is the largest and most powerful form ever encountered. It is highly durable and are deadly at almost any range. In addition, they are smarter than any other caste except for the Queen.

Then, there is the Queen.

The Queen is akin to a Hive Tyrant, with it's incredible durability and strength as compared to any other caste. It is capable of tearing synthetics in two with it's bare hands and can withstand limitless gunfire, making it possibly the most powerful Xenomorph caste encountered by the USCMC.

You cannot stop the Xenomorph metaspecies, just as much as you cannot kill the Tyranids. There is no Hive Mind, there is no central control. The Xenomorph metaspecies is the ultimate hunter, the king of beasts, the great worm of the end.