My character is a male Alien. He helped in the genocide of an extra terrestrial race "Space Jockeys"
This alien witnessed the climate shift that killed the rest of the Alien race millions of years before the mining shuttle received the distress beacon from the Space Jockeys. This Alien was lucky, it was frozen and preserved in ice. The ice melted long after the climate shift that made LV426 uninhabitable. The Alien was picked up by a group of scientists investigating LV426 after the events of Aliens. This Alien was tweaked and enhanced by the scientists. The scientists made it 10 times smarter and it turned into their killing machine, nick named Cunning Beast.
They sent it to kill a rather experienced Yuatja that had been killing shippers in the 487 Quadrant.