Cryllbot

The once mighty race of the Cryll lie defeated, save for the last survivor of the alien onslaught. They had come without warning, relentless in their devastation. The Cryll hadn’t time to prepare a defense.
The last Cryll mustered one final, valiant attempt at victory in honor of the race, but to no avail. He felt the alien mechanoid penetrate him, infect him, and soon it was over. The microbial race of the Cryll were now as their conquerors - nanobots.
The alien killer processed his victory coldly, without feeling, as its kind had done to its creators - back on Earth.