The Ultimate Character Questionnaire. A character questionnaire can be a great way to inspire a bit (or a lot) more detail about your characters. This list has been compiled from various sources around the net and in books and also our own brains.
This infographic gives brief summaries of the 12 Jungian personality archetypes, for use when building charcaters. As with any writing tools, archetypes are really most useful if you think of them as a starying block - you cannot simply reduce people to 1