Talek is a Yautja, or Predator as he's known in the Human-verse. One of a race of superior hunter / killers that roam the galaxy looking for trophies and treasure. They have accelerated sciences that allow inter-planetary travel and efficiency of task, but not much interaction with other races, other than systematic analysis of whether or not they can be hunted, or the skulls worth valuing. The most dangerous prey being the greatest prize.