O is for...

 Occupation, as in what does your character do for a living? Pay the bills? Buy Food? 

What does your character do, for the duration of the novel? This needs to be not only mentioned but shown in the book. Sometimes I feel that we authors give our characters jobs, and then promptly forget them. Even if they are an amateur detective, we must show them at their proper job as well that is if they have one. 

Your character can also be homeless, unemployed, retired or seeking work, these in of themselves can be plot points if you are interested in writing those. They can be an undercover agent, or professional space captain, a doctor on a ship, or land, or in space. Maybe they are an inventor? A serial killer with their own bookshop (the series YOU springs to mind). 

Questions to answer during making your character profile around occupation, are:

• If they like their job? 
• Did they always want to do this job? 
• Have they ambitions to rise through the ranks? 
• Are they well paid? 
• Do they get on well with their co - workers?

Keep in mind that the job you give your MC should be the one that draws them into the story, and puts them in the right place to see or be part of whatever is going on. 

My own novels are populated with Cross Dimensional Guardians, Detectives, Police, Doctors, Nurses, Queens of Hell, and Council Members...your characters can be anything you want them to be, as long as you have done the research into what doing that job takes.