Jin Ou is a bald old man with a large white beard. He wears a robe that covers his whole body and he always carries a fan with an image of a tiger on it.
As a vassal of Kan Mei, Jin Ou shows to be a decent strategist.
Jin Ou lacks a martial prowess or fighting abilities. He doesn't have a weapon and doesn't wear armor, which fits his strategic warfare and mindset.
As a strategist, Jin Ou shows to have a decent tactical knowledge. He was able to see Mou Bu's attempt of using the Echelon Formation and acted accordingly by sending reinforcements to the edge of the army. However, it turned out to be a ploy as the middle of the army was weakened.