That IS incredibly awesome though.
Maybe giving their purpose would help too. Their function is to grow and wipe as much as possible to a clean slate(gathering people to use as bodies and taking any technology they find, and using the remains of the planets as a resource of base materials), then to await further instruction. Their original creator had NONE OF THIS in mind, he simply made them out of spite, probably just saying "Xil" off the top of his head like I did and left the robots to decide what it meant. The bulk of their programming comes from another source.
Anyway, I appreciate you wanting to help. I also got a laugh from the Xtreme Impotence Laser.
I have only decided that L could mean Legion.