I grabbed this off of the Legacies LARP website so that I could better flesh out my character. It's a great questionaire that really makes you think about your characters history. I recommend copying this into a word program before filling it out.

Family-

Where were you born?
What was your family life like?
Who is in your family?
What do they do?
Where do they live?
What is your current relationship to your family?
Have you started your own family?
Are there any family secrets?
Who is your favorite relative?
Who is your least favorite relative?

Career-

What is your profession?
Where and how were you educated?
Have you ever done anything else for a living?
Why did you leave your old job (if you had one)?
Who do you work with?
What is your workplace like?

Relationships-

What things, people, and ideas do you hate the most?
What things, people, and ideas do you like the most?
Which person or groups do you respect the most?
Which person or groups do you fear the most?
Which person or groups are you most loyal to?
List any past serious relationships that your character has had and give a brief overview.
Do you belong to any groups or organizations?
Who do you really trust?
Who are your friends?
How close are you to your friends?
How well do they know you?
Are you protecting someone or something?
Who do you live with?
Why do you live with them?
Who was you first love?
Who is your best friend?
Who is your worst enemy?
Who is your confidante?
Who would bail you out?
Are you a disappointment to anyone?

Mental self-

Describe your moral code.
How mercenary are you?
Would you kill innocents?
How easily do you kill?
Do you have any goals?
What kind of personality do you have?
What special qualities o you possess as a person?
Are their certain things that you can’t or won’t do? Why?
What annoys you the most?
What do you think is your worst quality?
What do you think is your best quality?
What are your three most common dreams/nightmares?
What did you want to be when you grew up?
Did you realize your dream? Why?
Do you have regrets?
What makes you cry?
What makes you laugh?
What do you wish you could do that you cannot?
What is your secret dream, the one goal or desire that you keep from everyone, maybe even
yourself?
What is your worst fear?
If you could change the world in any one way, what would it be?
If you knew you were going to die tomorrow, what would you do today?
What hurt or insult will you never forgive?
What are you like when you are drunk?
What are you like when you are grieving/mourning?
What are you like when you are moody or angry?
What are you like when you are celebrating?

Physical self-

What is your race?
Why did you choose this race? For the abilities?
What is your general appearance (manner of dress, etc)?
Where do you live?
How do you decorate your space?
Do you save money or spend it like water?
Are you saving for something?

Miscellaneous-

What is your characters name (full birth name as well as nicknames and titles)?
What is your favorite color?
What is your favorite food/drink?
What place would you most like to visit?
What pastime ,that you participate in regularly, do you most enjoy?
What pastime ,that you participate in regularly, do you least enjoy?
What is your favorite form of art?
What is the most important thing you have ever done?
What is the worst thing you have ever done?
Does anyone know?
What religion do you follow? Why?
Are you pious?
What is your most treasured possession? Why? Where did you get it?
Do you have a good luck charm? What is it? How did you get it?
What do you do in your spare time?
Where do you prefer to spend your time?
Where do you feel safe?
Is there anyplace you refuse to go?
What are your hobbies?
Where did you get your hobbies?
Who taught them to you?
What stupid things did you do when you were younger?
What one item would you risk your life to protect?
Given a choice between all of the people you know, if you could only save one, who would it be?
What one item do you wish you didn’t have, but feel obliged to keep anyway?