勾践

He is the king of Yue, and because he lost the war, he surrendered himself to Ng to become a slave as he guards HéLǘ's mausoleum. He is a proud and arrogant person who suffered terrible humiliation as a slave. That makes him even more and more determined to take revenge on Ng by exterminating the whole country but inadvertently, he becomes friends with FuChai.