can you imagine that the stranger is one of many simulations of a human that was created in a vex mind? that the original human extracted the simulations and put them in the vex network. they all went crazy. and a few came back in reality inside exo bodys. thats the exo stranger. a crazy old simulation..... and the greatest thing she ever did was laying you a gun in the way ... edit.... and no mercury dont exist... is not a vex planet .... and she never done there anything