So, I guess some questions to get you started:
What is the world he comes from like? 
Where did Apoch grow up? A village? A city?
What was his family like? Was he close to his parents? Siblings?
When did he end up on his own? How did it happen? 
What does he spend his time doing? Why? Occupation?
Lovers? Notable relationships?
Notable accomplishments? Failures?