What's the most difficult character archetype to play?
I was watching a Korean drama which is actually quite entertaining. One problem, though, the (allegedly) badass main character (one of the main characters) seems more a pretty guy trying to act cool.
And that's not uncommon. The usual tough badass main character who is at the same time a seductive womanizer, that's a difficult character to play. It goes often too badass to be charming, or too charming to be badass. I've only seen Sean Connery pulling off the trick easily (Robin and Marian, The Wind and the Lion).
Other difficult archetypes to play? Or other actors that do it well?