I enjoy their earlier characters from the fantasy games. Tiax and Xzar, Edwin, Minsc, etc.
I also think that their games are like B or C movie level storylines, their writing is only marginally better than other games and so gets way overblown on how good it is. The attraction to Bioware games was always the gameplay, the polish, the world creation, character customization, and the strategy. Which is large part why games like DA2 and Jade Empire are not considered as good as the other games. They are severely lacking in those categories. Jade Empires story is no worse than any of the other games, it's just a regular run around beat em up game. KOTOR also is the most overblown game of all time in terms of story and interaction but it's world and gameplay system are very entertaining.