Riku

Riku is a life-long friend and rival of Sora, Riku is from Destiny Islands and is a childhood friend of Sora and Kairi.

He is a calm, cool, collected teenager who is not afraid to push the boundaries. Riku has a strong competitive streak. He shows his competitive side when he challenges Sora, saying that his heart is stronger than his friend's.

Riku is a tall and muscular teenager with pale skin, bright blue-green eyes and silver hair.

(Source: Kingdom Hearts Wikia)