Oikawa is a tall (6,1ft), fit, tanned, handsome man (He’s now 24, but still hasn’t lost his boyish charm). He was the princely type, a flirtatious and charming guy who has many fangirls. 
He is smart, and into fitness and pushing himself until he wins. He was the ideal boyfriend type, at least to the world. He had brown fluffy hair, and brown eyes to match, as well as great skin. He’s a player for the Argentinian Volleyball league. He also has a cute greeting he likes to use, “Yahoo~!”.