Okay, I know this is just stupid, but hey, I'm bored.
Every (normal) floor has a cybie. Fight or flight? Up to you. Maybe boost your natural damage resistance and HP.
Maybe call it either "Angel of Cyber" or "Angel of Oh-Shit-Where-Did-They-Get-All-Those-Parts?!?"
edit: Thank you Madtrixr for reminding me about JC. On Level 26, JC greets the player after the initial message, something along the lines of "So. Despite my best efforts, and some of my most powerful creations, a mortal has still managed to reach me in my sanctum. No matter. Prepare youself, so that I may have some sport!"