I really hate the stereotype that dark knights are "emo." 90% of people who have heard the word don't even know what "emo" really means, and simply assume it means someone who lives in constant despair with suicidal tendencies.

A true dark knight turns his suffering into his strength, and destroys everything in his path, thus creating hope for his comrades. His darkness becomes a beautiful, wondrous bloodbath for the entire party. Even the paladins wear crimson by the end of the day as a result, lest we dark knights render them headless.