Roxas

Roxas in his Organization XIII cloak

Roxas with his friends in Kingdom Hearts II

Roxas is a 15-year-old boy and the Nobody of Sora. He can also weild a Keyblade- and sometimes uses two at a time, Oathkeeper and Oblivion.

Roxas first appears in Kingdom Hearts II, where he is playable as a boy who lives in Twilight Town. During summer vacation, Roxas hangs out with his friends Hayner, Pence, and Ollette. When he is believed to be a picture theif, Roxas discovers that the actual theif was a Dusk Nobody, and he accidentally summons his Keyblade. [SPOILERS] Later, Roxas meets Axel- who claims they know each other. While researching for a school project, strange things go on in Twilight Town, confusing Roxas even more. It is revealed that the Twilight Town Roxas lived in was actually created by DiZ/Ansem the Wise, and his memories were erased- he was actually a member of Organization XIII. The Roxas gameplay ends with Roxas looking at the sleeping Sora and saying, "You're lucky... looks like my summer vacation is... over." At the end of the game, Sora battles Roxas inside his mind, and it is revealed that Sora and Roxas merge together. Roxas temporary becomes seperate again to meet Namine like they had promised- Namine had also emerged from Kairi.

In Kingdom Hearts 358/2 Days, you learn the story of Roxas's time in Organization XIII. With no memory of his past, Roxas befriends Axel and Xion, a girl who joined shortly after himself. During this time he learns more about the mysterious Xion and even about himself.

Roxas also looks exactly like Ventus in Kingdom Hearts: Birth by Sleep. [SPOILERS] It turns out that Ventus is actually part of Sora, so this explains partly why he and Roxas are the same in appearance.