<P> Predators are physically distinguished from humans by their greater height, arthropod - like mandibles and long, hair - like appendages on their heads that are set into their skulls (popularly perceived as "dreadlocks"). Their bodies are resilient to damage, capable of recovering from multiple gunshot wounds and radiation doses which would be fatal to humans . Their wounds do however require medical attention and they incorporate a portable surgical kit in their armor for this purpose . They are also capable of enduring excruciating pain . Predators are much stronger than humans, having been portrayed as being easily capable of outmatching a conditioned adult human male and shattering solid concrete with their bare hands . They are also skilled climbers, and will readily move through trees or across rooftops in pursuit of prey . Though capable of surviving exposure in Antarctic temperatures for an extended period of time, it is implied that Predators have a preference for hot equatorial climates, and thus making them ectotherms . Their blood is luminescent phosphor green in color . Their vision operates mainly in the infrared portion of the electromagnetic spectrum; they can easily detect heat differentials in their surroundings but are unable to easily distinguish among objects of the same relative temperature . A Predator's bio-mask increases its ability to see in a variety of spectra, ranging from the low infrared to the high ultraviolet, and also filters the ambient heat from the area, allowing them to see things with greater clarity and detail . While they are capable of breathing Earth's atmosphere, the creature in Predator 2 is seen using a breathing mask after losing his helmet (Although it should be noted that this Predator had just been shot multiple times and may have therefore not been operating at his full potential). Their dietary habits are also mentioned in Predator 2, where it is revealed that the creature regularly visits a slaughterhouse every two days to feed on the stored meat there . </P> <P> Throughout their film appearances, Predators have undergone numerous design variations . In Predator 2, the main Predator was designed to look more urban and hip than its predecessor . Design changes included tribal ornamentation on the forehead, which was made steeper and shallower, brighter skin coloration and a greater number of fangs . This Predator was made less reliant on his plasma caster, and more cunning with the use of nets, spears and bladed weaponry . In Alien vs. Predator, the appearance of the Predators was redesigned to make them seem more heroic . Redesigns included a reduction in head and waist size, broader shoulders, a more muscular physique, piranha - like teeth on the upper jaw, and dryer and less clammy skin to further differentiate them from the Aliens . In Aliens vs. Predator: Requiem, the Predator was returned to the sleeker design concept prior to Alien vs. Predator . For the so - called "Black Super Predators" in Predators, the designers used the differences between a cassette tape and an iPod as an analogy in differentiating the new Predators from the classic . The Super Predators were designed as leaner and taller than the "classic" Predator design, and they have longer faces, tighter armor, and more swept back dreadlocks . </P> <Table> <Tr> <Td> "The Predator society builds sophisticated spaceships, yet they should not look as sleek and hi - tech as a Star Wars stormtrooper . They are a tribal culture, yet their look should not be as primitive as the orcs from Lord of the Rings . They are also a warrior culture, so the ornate cannot conflict with the practical ." </Td> </Tr> <Tr> <Td>--Alec Gillis on Predator designs . </Td> </Tr> </Table> <Tr> <Td> "The Predator society builds sophisticated spaceships, yet they should not look as sleek and hi - tech as a Star Wars stormtrooper . They are a tribal culture, yet their look should not be as primitive as the orcs from Lord of the Rings . They are also a warrior culture, so the ornate cannot conflict with the practical ." </Td> </Tr>

Where did the idea for predator come from