Gao Hai is a pale skinned and young looking man who is one of the High Eunuchs of the Chinese Federation. He went to Area 11 when Duke Calares became the Viceroy of Area 11 with Li Xingke as his bodyguard.
Following the meeting, Gao Hai fell under Lelouch's Geass and while under his Geass, he grants asylum to the Black Knights within the grounds of the Chinese Consulate. Afterwards, Li Xingke questions Gao Hai's motives in following Zero and if Empress Tianzi approved it. He then shown disloyalty and said Zero is more important than the Empress. Xingke saw his disloyalty and executed him for it.