Luo

• Trashy and kind of an ass, seemingly a bit lazy, constantly flirt and play around with other people's feelings
• Has brother complex for his adoptive brother
• Works for special tactical unit of the police force as a field agent/sniper, his occupation is often listed as classified 
• His background is somewhat dubious as he previously worked as contracted mercenary

Relationship

• Adoptive brother of Ning (something??)