I have been a fan of Michael Whelan for ages, and he has provided the basis for several of my MUSH characters, at least in my imagination. Recently I went looking at his site again, and as soon as I saw Prudence 2 (not explicit but may not be work-safe), I realized I was looking at Lyrilin. Why yes, I did buy two (GURPS) levels of beauty for her so I could use this picture to represent her, why do you ask? ;)
I also have leads on three of the NPCs, courtesy of Robin Wood. F'nor from The People of Pern, minus the firelizard and the sling, makes a decent Duereon, though I'm still looking for possibilities. Toric from the same source, with flaming red hair and perhaps a more Elven build, is Nebiod with the same caveat as Duereon. On the other hand the three of pentacles from the Robin Wood Tarot Deck is very close to what Andy imagined for echoweaver's-hubby's-bane, Mase.