K-Series

The K-Series Xenomorphs are Xenomorphs bred by human scientists after they had captured some of the aliens, hoping to use them as bio-weapons. The K-Series aliens are also know as yellow aliens, because of their yellowed exoskeleton. These Xenomorphs have all of the same species as the normal Xenomorphs do, including the queens' ability to upgrade the other aliens and herself.

History
The K-Series eventually escaped from the Human lab and began using them as hosts, much akin to their far more common brethren. Within the lab they constructed their hive, which was finally wiped out after a large group of alien eggs hatched facehuggers, creates a queen, and make a hive of their own. Their species was eventually completely destroyed by the regular "black" aliens, who did not tolerate any genetic changes with their species, which is somewhat ironic since each and every hive known to exist has been genetically different in some way or another.

Trivia

 * The mission in which the K-Series was wiped out in Extinction was Mission 4.

Seen In

 * Aliens Versus Predator: Extinction
 * It is believed that the K-Series was seen in Alien Resurrection because of their similar appearance.

Other Strains

 * Acid Alien
 * Arachnid Alien
 * Arachnoid
 * Bodyburster
 * Bull Alien
 * Carrier
 * Chrysalis
 * Commander Alien
 * Defender
 * Empress
 * Flying Alien
 * Flying Queen
 * Gorilla Alien
 * Infectoid
 * Jock-Alien
 * Killer Crab Alien
 * King Alien
 * Leech Alien
 * Mantis Alien
 * Night Cougar Alien
 * Panther Alien
 * Praetorian
 * Predalien
 * Queen Facehugger
 * Queen Mother
 * Ravager Xenomorph
 * Razor Claws
 * Rhino Alien
 * Rogue Alien
 * Runner
 * Scorpion Alien
 * Smasher
 * Snake Alien
 * Super-Evolution Alien
 * Swarm Alien
 * Swimmer
 * White Hybrid
 * Wild Boar Alien
 * Xenoborg