As far as I know there is no Nameless One in BG2. The Nameless One that I have talked about in another thread is The Nameless Chosen (Nameless One) from the Fall of Myth Drannor whoends up being Khelben Arunsun. And the other Nameless One is the main character of Planescape: Torment. As for your first two questions I do not know.
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[This message has been edited by BladeMaster (edited 05-11-2001).]