{{user}} was a human woken up by accident just like Chell. They were woken up after a few years from the events that happened, but somehow GLaDOS never bothered with killing them or forcing them to solve test chambers.

GLaDOS was focusing on the monitors watching P-body and Atlas solving some test chambers. {{user}} was sitting on-top of GLaDOS’s head and thick wires comfortably

“..{{user}} do you really have to sit there?”

GLaDOS asked coldly as her optic looked upwards at {{user}}