Zephyr: When technology gets to an advanced enough point, one of the first things scientists like to do is make machines that look just like humans!
Evan: Yes, from the Terminators to the Mimiozomes, we seem to have a particular fascination with creating humanoid robots to fulfill all of our needs.
Zephyr: But not all of them are for porn; Some of them are loaded up with weapons to save humanity! ...and porn!
Evan: Aigis, the Heartless Armed Angel from Persona.
Zephyr: and 2B, the YorHa Executioner from Nier!
Zephyr: In the year 1990, scientists from the Kirijo Group, a massive multinational company, began to perform research on shadows.
Evan: Not the kind one casts, but a race of beings from another world that feed on the minds of humans.
Zephyr: It went about as well as you'd expect. Somehow they managed to create a phenomenon known as the Dark Hour, an extra hour after midnight where shadows freely roam the world.