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
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
The Ultimate Character Questionnaire - over 150 questions
Go Teen Writers: Deeper Character Development: 5 Things to Know About Your Main Characters
Great ideas! I do believe the physical appearance of the character is too important to leave out (I hate it when writers "leave it to the imagination." No, I want to definitively know what the character looks like!) But the "I woke up and looked in the mirror" trope gets old fast.