When you read a fantasy novel part of the fun is getting to explore a new world. Everyone knows that. But I believe the same is true about characters. You can explore interesting people in the same way that you explore a town or a culture.
Patrick RothfussDenna is a wild thing," I explained. "Like a hind or a summer storm. If a storm blows down your house, or breaks a tree, you don't say the storm was mean. It was cruel. It acted according to its nature and something unfortunately was hurt. The same is true of Denna.
Patrick RothfussThe thing that helps me do a good job is that I don't feel the need to explain everything about the world to my reader. I'm not writing a history text on the Four Corners. I'm telling a story that's set there. The setting belongs in the background for the most part, and it's easy for fantasy authors to forget that. That's one of the unfortunate parts of Tolkien's legacy, in my opinion. Read the first hundred pages of the Fellowship of the Ring and you start to get pissed, "Shut up about the Shire's museums! Isn't the world supposed to be in peril or something?"
Patrick Rothfuss