I think one of my favorites is Jobasha, the Kjahit running the rare book store in Vivec. He just has a mellow demeanor, is well dressed, and I've always thought of him as a good guy trying to make as good of a living as he can in a rough society. He's obviously doing pretty well for himself too, considering the selection in his store & the fact that he needs a guard for security!
Also, I like Gentleman Jim Stacy. He's obviously a man with a great reputation, yet he tries to keep a low profile. The stuff he does for the poor & needy gives him a robin hood-type quality, I think...
PS: The mudcrab deserves an honorable mention. That creature has to have a crazy story behind him/her/it! Any books that talk about a thirsty, rich mudcrab?