Completely imaginary observed or knowing people and touch of you in them

Who is the hero

Make them very in-depth by different characteristics 
What is there ambition and or talent
what is there deep dark secret
  Give them a best friend
Worst enemy and why
Also what we carry in our pocket
The names are important to what there are
Bring character to life make action 


They do that so that the author can choose what they want us to feel about the certain character