.... Because there's nothing like a character who seems contradictory on the surface, but when you peel back the layers, it all holds together. If you've ever watched the Highlander television show, I'd offer Methos as an example of something similar; he was presented as a mild-mannered researcher, not interested in fighting or questions of who was more macho than whom -- and then we found out about his warlike past. Did the audience say, "That's crazy, it utterly contradicts what we've learned up till now"? No, they said, "My god, it all makes sense."
Yes, a Methos reference. Hah! Go read the whole post. Great stuff!