An armored female android developed by the interstellar conglomerate [[Vector Industries]].
She is comprised of entirely mechanical parts, a rarity in the age of advanced realian technology. The basic tenet to which she adheres to is based on logic, propability,and completion of her mission above all else. She also unconditionally protects Shion, her creator.
She is equipped with a "simulated personality OS" to aid in communication, and though her speech conveys her role as an android in service to humans, her tendency to put logic and probability first makes her quite difficult to manage at times.
The name KOS-MOS is a general acronym to denote an anti-gnosis tactic system. It stands for "Kosmos Obey Strategic Multiple Operation Systems"