There is something of a continuity error at the moment he's hit a splash of blood hits him in the neck and back of the head. He is shot from a far distance and hit in the back, which leaves an exit wound the size of a basketball in his chest. The first person killed by the Predator's shoulder cannon (aka plasmacaster) was Blaine. In the end, the Predator must have thought Willy to be a worthy opponent and walked off with his head, making a trophy out of his skull. It's possible that a scene was supposed to follow where Willy and the Predator engaged in combat with their edged weapons and Willy would lose or the writers were just relying on the audience to figure out that part since Willy obviously doesn't survive. Likewise, the Predator appears to extend its gauntlet blades in response. In the scene where King Willy meets the Predator, he draws a sword from the staff/cane he carries. It's unknown if the Predator took a trophy from Danny, as no mention is made of the state in which he was found, other than his heart was nearly cut in half and death was instantaneous. Yet it takes a trophy from Jerry and King Willy. Something similar happens in Predator 2: when the Predator kills the Colombians, train car passengers and Jamaicans in the apartment, it only takes one trophy from the Colombians and none from the Jamaicans in the apartment. Perhaps they put up more of a fight than the other three. Hell, it's like they just disappeared.' So it's possible the Predator took the rest as trophies. Dutch asks Billy what happened to the rest of Hopper's men. As it witnessed Dutch's small team manage to take out an entire platoon of soldiers, it may have found each of them to be worthy of trophies. It's possible that the Predator does this to victims it finds unworthy to be trophies. Three of them were skinned and hung upside down, but they were not made in to trophies. The creature may have thought that it needed to do this for it's final showdown with Dutch, and it adds to the menace the creature has. Tempering is a common practice among blacksmiths who make knives or swords or axe heads. The creature may also have been tempering the blades to make them harder: tempering involves heating metal until it is red hot and cooling it rapidly, making it harder: metal is actually a fibrous substance and the rapid heating and cooling draws the microscopic fibers closer together, making the metal harder. The ability of the blades to widen is unrelated, and they wouldn't be much of a hunting tool/weapon if they were not adaptable to varying size of prey. The laser designator is part of the creature's mask, so its a fair assumption what we see is some form of laser used to sharpen (or prime, charge, poison or alter in some way) the blades which at the time were exposed from their sheath and glow red in response. It's reasonable to assume that while Dutch was making preparations, so was the Predator. Future films and stories show that the Predators come to hunt as part of a ritual but then return to their clan. But it is likely that the Predator was only there for a limited time, as the more time it spends on Earth, the increased risk it would be discovered and his technology captured and exploited. If there was a single Predator, the absence of people from Anna's village being continuously killed, all year around, including every summer, very hot or not, is likely due to him moving around to hunt in different areas so it does not attract too much attention in a single area. This statement implies that either the Predator, or various other Predators, would come to Earth off and on over the years to hunt for a limited period of time, or there has only been a single Predator alone on Earth over the years. They would refer to the unknown perpetrator of these killings as the 'demon who makes trophies of man' and she also added that it would only happen during the hottest of summers. This is evidenced when Anna ( Elpidia Carrillo) states that when she was young, men in her village would turn up missing, and they would sometimes find them butchered, without their skins, or much much worse. When exactly this arrival occurred is not established, but we do know that it was either many years ago and the Predator has been living here ever since, or various Predators have come and gone over the years, e.g., the jungle Predator may have visited the particular jungle in the past and perhaps returned to find new game in the same location, since Predators often visits places where there is intense heat and conflict. As such, we must conclude that the Predator is an alien being from another world. In the very beginning of the movie, we see an alien ship fly past Earth with a smaller ship departing from it and then descending into our atmosphere.

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