cyberpunk chara design

It's the story of two siblings who have been sold by their parents to a chinese gang. Right before giving their children away, the parents gave them a jade as a token. During the monetary transition, the chinese gang killed the parents and left them to die, taking their kids away.
The kids are then trained by the gang as mercenaries and spies. The goal of the siblings is now to destroy the enemy gang, take control of the city and find their parents ( they didn't know yet that their parents were already dead)
The siblings are both fans of the legend of the monkey king, which their parents used to tell them when they were little. The boy named himself SUN as SUN Wukong the monkey king, while the girl named herself SAN as Longwang SANjun the dragon.
Sun is an hothead: he’s violent and stupid.
San is more tranquil, calm and serious: a fatal beauty.