Feel free to respond to and/all of these questions IC to further develop your character and/or stimulate ideas for scenes.
What do I want most out of life? Why? What brought me to want this most?
How do I go about getting what I want in life?
What kind of mundane pleasures do I seek? Why?
How would I describe myself (physical appearance, temperament) to someone? How do I view myself? How do I want others to view me? How well-kept am I? Do I bathe and groom regularly? How do I feel about my appearance?
What is my biggest character flaw? (Every character has at least one -- look at character flaws as something that makes your character more human and more interesting, not as a weakness to be avoided.)
What do I hide from others? What secrets do I keep?
Who do I like to associate with? Why?
How do I act around family? How much does my family mean to me? Would I give my life for a family member's life?
How do I act around strangers? How much do strangers mean to me? Would I give my life for a stranger's life?
How do I act around friends? How much do my friends mean to me? How valuable or replaceable are they? Would I give my life for a friend's life?
Do I speak more casually or formally? Do I use jargon a lot? Do I get straight to the point with my conversation, meander, or take forever to get my meaning across?
How would I react if someone or something (animal, earthquake, evil villain) threatened my life? The life of a friend? The life of a family member? The life of a total stranger?
What do I value most? What do I value least?
What behaviors and beliefs in others upset me? Anger me? Worry me? Draw me to them?
How do I behave when I'm upset? Angry? Sad?
Do I believe in a religion or a god or gods? In something else?
Do I tend to uphold the laws of the land? A personal code? When do I break these laws or my personal code? Why?
What do I want my future to be like? What is the best-case scenario, the worst, and something in between? Figure out these scenarios -- how will I respond to them?
Am I the type to hurt or kill? Would I feel remorse for doing so? What justifies harming another? Would I harm or kill myself? Why? What scenarios would drive me into these situations?