I think it looks great.
I can think of several possibilities as to who this could be:
as a Chinese leader-
Zhao Kuangyin (later Taizu) of Song- The Song Dynasty was founded by a military leader who led a coup against his ruler due to the urgings of his soldiers and political allies.
Zhu Yuanzhang (also called Taizu) of Ming - Like the Song, the founder of Ming was also a military man. His era name "Hongwu" means "vast military" and much of his reign was occupied with driving the Mongols out of the newly-established Ming empire.
Sima Zhao of Jin - Sima Zhao was the son of Sima Yi, a great military advisor who served Cao Cao of Wei. His father took advantage of Wei's weakness and manipulated things in favor of the Sima clan. Sima Zhao usurped the rulership of Wei and established the Jin Dynasty, which ended the Sanguo (Three Kingdoms) Period.
as a Korean leader (if there was a more specifically Korean background pic)-
Wang Geon of Goryeo- Wang Geon (a.k.a. Wang Kon) was the founder of the Goryeo Dynasty. He started out as a military commander and was a very effective one.
Choe Chungheon of Goryeo- Choe Chungheon led a coup against a tyrannical leader and served as a Prime Minister in the Goryeo period. Though he never took the title of supreme king ("daewang") for himself, he was a very powerful figure at the Goryeo court.
Personally, I'd advocate turning this into a Korean leaderhead, perhaps replacing Wang Geon or representing Choe Chungheon, since we really need something to replace Firaxis's horrid Uncle Fester leaderhead.