I'm only 1/3 through so there may be stuff further on that proves me wrong. However I believe we have been shown demandred's alter ego - at least 1 -consider he may have more than 1! The scene where rand returns to the stone and lines up the high lords and ladies. Weirmon and the lady can't stand the light eminating from rand, and rand can see into them through their eyes. I think weirmon is demandred. Min assumed that they were just darkfriends-rand didn't say that-indeed whatever he was about to say further was cut off when he saw Tam. This light vs dark effect doesn't work with the low level df's we know are still around rand or even BA-his connection with the light affects those who have an intimate connection with the DO (forsaken). So weirmon is a male forsaken-there is only 1 other male besides moridin-and that's demandred.