Age: 15 (KH), 16 (KHII)
Eyes: Greenish blue
Hair: Bluish silver
Kingdom Hearts: "Riku is Sora's best friend. He may seem cool and collected for his age, but he is far from the quiet type. Always curious about the unknown, he begins to question the small, closed world in which he lives."
Kingdom Hearts: Chain of Memories: "A fifteen-year-old boy who is best friends with Sora and Kairi. Mature for his age, Riku is cool and collected. To save the world, he chose to remain in the realm of darkness."
Kingdom Hearts II: No information is given.