There isn't a full name for him. It is just Roxas. Just like the rest of the Kingdom Hearts characters. They only have a first name. (Not counting the Disney or Final Fantasy characters)
sora: his somebody and Ventus: when he realizes that his name is not roxas in KH III
The scene that we see in Kingdom Hearts II Final Mix+ and the Opening in Kingdom Hearts 358/2 Days, where Xemnas gives Roxas a name, takes place right before Xemnas brings him into the Organization and introduces him to Axel. It's a flashback, so to speak.
The music was written by Yoko Shimomura and Nobuo Uematsu. The songs with the vocals--like the two main themes--were sung by Utada Hikaru.
Her name was Xion. Roxas defeated her and she disappeared. They all forgot about her after that since she was just data.
You're most likely referring to the Oblivion Keyblade, which is given to you by Riku (shortly before entering the castle at The World That Never Was).
He doesn't have one, No one in Kingdom Hearts does.
Kingdom hearts birth by sleep, kingdom hearts, kingdom hearts chain of memories, kingdom hearts re coded, kingdom hearts 365/2 days, kingdom hearts 2 and kingdom hearts dream drop distance. those are all the game s there is kingdom hearts 2 final mix and kingdom hearts re: chain of memories
No one really knows for sure. But Kingdom Hearts is based about having all the hearts of people's into one place (Kingdom Hearts)
Although the name Kingdom of hearts sounds cool, the game is called Kingdom hearts.
Organization XIII's members definitely existed at this point, but the name 'Organization XIII' probably wasn't created until the time of Kingdom Hearts Chain of Memories when Roxas joined, making thirteen members altogether. We know, because of the events in Kingdom Hearts Birth by Sleep, that the members of the organization were mobilized, but "Organization XIII" in specific might not have been established.
When Sora sacrificed his heart to save Kairi in Hollow Bastion, Sora's nobody (Roxas) instantly came into existence. Roxas woke up in Twilight Town with no recollection of his past. Xemnes came to him and gave him his name. Xemnas then brought him back to Castle Oblivion and made him an official member of Organization XIII (13). Xemnas wanted Roxas in the Organization so that he could utilize the power of the keyblade to gather hearts so that they may make Kingdom Hearts complete and become whole again. :)
I don't believe it's an actual Japanese name. It's simply Sora's name with the letters switched around. Sora's name however means 'sky'. Roxas isn't an actual Japanese name. It is derived from Latin, with Roxas meaning "wind". So, "Sky" (sora) and "Wind" (roxas) share no known connection, but you can piece them together however way you want. -------------------------------------------------------------------------------------------------------------- And now there is a new game coming out called Kingdom hearts Birth by Sleep And now It's Sora=Sky Roxas= Sora with an X And the new character Ventus=Wind