Aliens Vs. Predator Vs. The Thing

Based on characters from Aliens, Predator, and John Carpenter's The Thing

PROLOUGE:
THE THING IS REBORN

Deep in Antarctica a being sleeps, waiting for the time when it could be awakened yet again. An unsuspecting group of Americans discover the creatures horrifying power after it awakens. They manage to destroy the beast, or so they believe. The alien being survives only to be defeated once again. So yet again it lies in the vast frozen wasteland, asleep, and waiting.
Many years later an unearthly shake, and unholy blast of heat brings life back to its cold body. A construction worker was the first to fall victim to the entities power. The creature began to assimilate the human. Cries of pain were made, but none could be heard. Eventually the life form headed towards the other construction workers. It knew that until it got one alone it had no chance of another assimilation, but at the moment that didn't concern The Thing. It could wait, after all that is what it had been doing for years. "Hey John! Come give us a hand over here," yelled one of the men that had been working. The Thing knew better than to act suspiciously and headed over to help.
Apparently they needed someone to lift a large crate. The John-thing grabbed one side, a man named Dylan grabbed the opposite right corner, and a third man, named Larry, grabbed the opposite left corner. They pulled the crate over to a large metal area on the ground and dropped it. The John- thing didn't react quickly enough. The crate dropped and pulled one of the creature's arms with it. The arm twisted and spat blood everywhere, but it wasn't exactly like blood, it had a strange yellow tint to it. From the end of the arm grew razor sharp fangs, and the sides sprouted strange crab-like legs. It walked over to Dylan and began to rip through the flesh. Larry pulled a gun and shot the arm, but it was no use. The arm wouldn't die. The John-thing turned towards Larry, and opened its mouth, first slowly, and to a point at which it should be able to open to. Then the skin started ripping at the mouth, the Thing's teeth grew longer, it swung its remaining arm and tripped Larry off his feet. It placed its foot on his back. The head lowered towards the quivering body of Larry. A sickening sound accompanied the jaws ripping the flesh from Larry's upper back, and the removal of the poor man's head.