G H LearnerDo you use any special means to get to know your characters? E.g. character sheets, prequels, interviews, etc.
The core of the characters is there when they 'appear' in my mind. Details surface with more thinking about their beliefs, truths and falsehoods, tasks, and relationships. Eventually I use Eneagrams to help me keep them consistent, to not all be like me, or like each other.