Who is the red woman in .hack//SIGN's opening?


In the opening of .hack//SIGN there is a woman who looks to be wearing a red
body suit and a visor, at the end she's seen floating on the opposite side of
the screen to where Aura is but she is never seen in .hack//SIGN

I am wondering, is this woman what Morganna Mode Gone would look like if she
had a PC Body or is she some other Player/AI

