S&H Monsterarts Alien big chap.
His friggin' upper chest is articulated. And they made the tail in linked segments rather than rubber-covered wire, so it's slightly less posable but a hell of a lot more stable, and less likely to rot.
And here are those better images!
Like I said,
super posable. Lookit those knee joints. I was wrong about more accurate -- it is in places, but that tail blade is ADI all over.

He actually comes with two sets of hands, one neutral, one clawing. I didn't get any photos of the "attack" hands.

The dome is obviously too transparent, but at least they didn't give the eye sockets an angry expression like everyone else does.

Trying out the old VHS rear-cover image, taken from one of the promo shots. They actually specifically demonstrate this pose in the promotional and packaging imagery for the figure.