The Krill are a species of reptilian creatures that come from an area beyond MAOX controlled space. until recently they were considered harmless and primative. Every thing changed when one of thier "ships" dropped in to a system controlled by the corpcers and attacked, captured and destroyed all ships in the system. reusing weapons and other technology aboard the captured assault crusers, they created vastly supirior craft and weapons. with new means and vehicles at there disposal they have drifted through countless star systems capturing ships and conquring planets adding to their empire.
There are three types of Krill broken down into multiple sub groups. the lowliest type of Krill is the worker cast they are weak minded creatures easily controlled by the fighters and leader types. the second group is the Warrior class wich branches into two types the ground units and the space units.the space units break into to groups: the piolets and the marines. the ground forces break in to three groups : tanks airborn troopers and ground troops.
the final cast is the leader class involving one queen for every ten thousand soilders a grand total of several thousand queens.
these are the Krill piolet and marine
ok so a basic krill Soilder is about seven feet tall. but other types like the tank are massive around 20 feet tall and 30 feet long. all krill can create a mucus that is a form of moleculer acid and then spit it on enemy soilders this being their main deffencive weapon. marines and ground troopers were a similar pack with over the shoulder laser weapons they were light armor that is like a second skin giving added mobility and agility. piolets were black presurized suits and can survive in hard vacume for about one hour