Who are the deepest Star Wars characters?
In your opinion, which characters in the Star Wars universe are the most vivid and dynamic? Which ones have the most personality and depth to their character? They can be from any time period, and can be from the movies, the EU, or [maybe] even fan fiction (post a link to the fic, please!).
This is not another "Who's your favorite character" thread, but rather a query to see if Star Wars has very many interesting characters who are more than just cardboard cutouts. The character's appearance should have no bearing at all in this thread.