Back in Black - Alien 1979
In space, no one can hear you scream, "Ice cream!"
This design is not as big, as poseable, or accurate as the Arvo Brothers' superb and utterly sublime Alien, but it's got a smoky-clear head and is only 500 pieces. I had a Takeya Alien model kit in front of me for reference, but this ended up looking more like the AMT/Ertl model kit to me. It's roughly LEGO Constraction Figure scale.
It was designed in LEGO Digital Designer, and rendered with POV-Ray via Stud.IO.