What you put about The Stranger is half a different but similar theory ok so she is half vex which explains her guns bio and the way she disolves and disapears like the vex when they teleport to you and by that she can time travel which is a quality by the vex and also she wasnt forged in light so maybe her lost exo squad she was taken by vex since she isnt forged in light which is why they didnt kill her so they mightve used her into gettin secrets of some sort and she was being controlled so she must have found out what they were doing or somehow broke the connection which explains why she has a strong hatred for the vex and is helping us:This Theory is made by me straight off the dome