Since I seem to be complaining about people's complaints recently I have now made a thread about human mawmen (zombies) People saw it's weird that headcrabs can couple so perfectly with humans. It is far from perfect. the claws are grewsome extensions of the skeleton that are covered in blood and rip the skin open and curl up in a way that dosn't look intentional. They are covered in their own blood from the mutations. The arms get mutated in a way that makes them look weaker as they actualy get scrawnier. The fast crabs ones are doomed to die as they have no way of feeding and they are ripped apart The poison mawman is purple with it's mutations. That dosn't seem useful at all. I think that vortigaunt anatomy is similar to a human's alowing a crab to take it over. They eat meat (the headcrab eating vort) the atmosphere of Xen and Earth is changeable to the two world's creatures and they both have water (Xen aquatic life can live in Earth waters). So the 3 main things neaded for life on Earth is also on Xen so it is reasonable to asume that Vorts nead the same things to survive as humans so they would also nead similar organs. A normal headcrab vortigaunt mawman has neat claws and no gone-wrong mutations. A fast crab neads to be able to jump around Xen's platforms so digests any useless organs. Not knowing human anatomy it regards almost everything as useless which is why human ones have no organs. The poison ones inject their eggs into the mawman causing it to swell up. It also mutates it for potection of the babies. The babies eventually burst out of the mawman and kill it. Humans react badly to these mutagents and cause the ugly mutations.