The mighty internet ([link]) told me that before they made the questionable looking human-alien-thing on Alien 4, they actually had plans on making a pretty badass looking one, the description of it goes as follows:
"An alien, to be sure, but nothing we've seen so far, its forelegs arch out of its back like spiders legs, its back legs set on enormous haunches, thick and powerful.
Its head is long, eyeless, like the others, but along its white expanse red veins, coming out of the skin and running like thick black hairs to the back.
It has retracted pincers at the side of head that come out when its tongue does.
Its much bigger the the others, nearly the size of the queen herself.