The main charectors name is Sora.
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)
The main protagonist is Sora.
"Sanctuary" by Hikaru Utada...
Her name is Selphie and she appears in Kingdom Hearts 1 as the weakest fighter on the Destiny Islands. The character Selphie is actually from Final Fantasy VIII, while the other characters from the Destiny Islands (referred to during Kingdom Hearts II) are Tidus and Wakka from Final Fantasy X.
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
none of the original characters in kingdom hearts have been given last names as of yet, and its unlikely that they will have them.
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.
There is no continuation yet, but there is Kingdom Hearts: Birth By Sleep. But there should be another as kingdom hearts is known to be a trilogy. only including official (meaning not CoM, or BBS, or anything with an actual new name to it.) games called simply, Kingdom hearts, kingdom hearts II, and will be, kingdom hearts III.
There is no character that goes by the name of 'Thomas'in any Kingdom Hearts game.
Kingdom Hearts is a Disney game that has a fantasy/rpg genre and has a full cast of Disney cameos and characters.