You've spent your life exploring the Underdark, whether by yourself or as a member of a party. You have trained in the skills of combat and stealth. You might have been born there, either as a member of a race from there, or as a slave to one of said races.

Suggested Characteristics

Underdark explorers are affected by the constant need to be on the alert down there. They are generally inclined to battle rather than talk, and some are even posessed to the points that they become creatures of the tunnels themselves. This plays over into their personality and often makes them seem violent or dangerous on the surface.