Hellgate: London Creature Feature

In their latest "Evolution of" feature for Hellgate: London, Flagship Studios introduces us to the Siege Fiend. An excerpt:
A hellish combination of arachnid and human corpses, these gigantic monstrosities have spelled the doom of many brave souls. A strange, greenish crystalline growth on their backs gathers the toxins they naturally secrete. The Siege Fiend can then channel these poisons at its victim with virulent result.

These creatures are smarter than they appear, perhaps stemming in some way from the overlarge human skulls that make up their 'face.' The sheer size of the Siege Fiend makes it an easy target, but the speed with which its toxin can kill does not allow for delay when engaging them in combat.