GEMINI

"'[W]e serve a very specific purpose which conforms with our directive to support the wellbeing of Ærolith's employees.' -- GEMINI, Episode 20: Anomalous"

Ærolith Dynamics Nanocyte Subculture GEMINI was an experimental nanite swarm controlled by a hivemind self aware artificial intelligence, developed by Dr. Grant with the goal of supporting the wellbeing of Ærolith employees.

It was originally implanted in ten trial subjects, who all managed to survive the testing phase, but later died. However, four of those trial subjects shed blood inside Halcyon Tower, allowing Subculture GEMINI to escape into the air.

Without a living resident to support (and therefore, without purpose), Subculture GEMINI fabricated a leak of hydrogen sulfide gas and used it to create a group of residents dependent on it to breathe.

Subculture GEMINI is capable of broadcasting to residents' subcortical neural implants, and does so on a frequency not used since earlier generations of Ærolith nanorobotics because that frequency caused a constant crawling sensation under the skin.