I'm wondering how many people use the D.I.S.C. Method of personalities when designing characters. If you're not familar with this method pick up either The Personality Code, or Personality Plus, although the second book is slightly different method. To break down the concept: There are four basic personalities a person or character can have, any everyone is a mix of them. D: The dominant, determined, designated personality. I: The inspiration, animated, outgoing personality. S: The passive, reserved, selfless personality. C: The calculating, organized, cold personality.