Saw this recipe on the Spawn boards a long time ago. Took the Quake figure and popped off her head. Replaced it with the Hasbro Alien Resurrection Ripley 8's head. Also replaced the arms. Gave the guns a quick repaint with Games Workshop paints. I gave the bullet marks and some of the armor a quick touch-up and voila.
*Recipe*
-Hasbro Alien Resurrection Ripley 8
-Quake Athena
-Games Workshop paints
--black primer
--boltgun metal
--mithril silver
--snot green