This won't be news to any of you who own the Predator Special Edition and have watched the extras, but for everyone else...
It's also timely in that Robert Rodriguez has said he plans to feature new Predator designs in his proposed sequel. Will he return to something like this as a tribute?
Predator's original title was 'Hunter', and they actually started shooting with a totally different alien design. The creature had longer legs, and the head of a fly/dog. That head was designed to be able to turn and flip to almost any angle so he could track his prey (cool idea). Wobbling around on its stilts, and using a harness, they just couldn't get the walking to look convincing, or the head to look like it was properly attached.
But it gets better. Hired to wear the suit, for his agility, was martial-arts-trained Jean-Claude Van Damme
Here he is on the job -
Van Damme quit after two days, unhappy that he was to be an uncredited special effect.
With the creature problems, the original design was scrapped, and Stan Winston was called in. It was James Cameron who suggested him. Winston created the design we're all familiar with. James Cameron also reportedly came me up with the idea of the mandibles on the face.This was news to me, had you seen this before?
More Details - Original Predator Design -- Van Damme As A Giant Fly?!?!