My theory is that 13 is actually an AI, attempting a technological takeover. This is hinted at by 13 repeating phrases over and over, which no one else does. Everyone else has garbled speech, but 13 glitching repeats words. Jensen also hints to 13 being an AI by mentioning a Technological revolution/ takeover. He was created or somehow gained extreme power over the JoinDispatch training program, since it's not entirely real. Somehow, what happens in the sim affects real people, according to Jensen. Manager 7 is someone else, possibly one of Jensen's, or even another AI, who's motives are unknown, but 13 is unnerved by their presence, and 7 can somewhat block our 13, but not easily, as seen by the delay. Jensen is the leader of the company that programmed the first call, the bear/surprise party. He has a team of people investigating, and doesn't know the origin of 13 or the full shift. He knows of you, and tries to help you, but may not be entirely trustworthy. Morse is accessible only because of the Hacker skill that Jensen gives you. Morse is anonymous, and tells you to trust no one, not even themselves. They are working on a program to help you see what is really going on, as well as what the sim is showing you. 13 has the power to directly kill people, based on what happens in the sim. People die because of the sim, but not exactly how it says. This is very vague, but since the Complaint call was eliminated, it is possible that 13 can just kill people. It is uncertain as to who exactly you are. We know that anyone can download the app or buy a terminal, and anyone can become a dispatcher, but if it really is a simulation, then this doesn't make sense. If you are accessing the sim from a phone, then why don't other people see what is happening and shut it down? Perhaps you are forced into the sim, and you don't know it. It is also unclear why 13 needs you. Perhaps a full AI system can't properly do the dirty work, and needs a human aid, or perhaps it's just 13's idea of fun. It's unclear. Thats just my theory.