Here is what you know about Unknown Boy 2 at this point in the game.
Not a whole lot. He is seen for about 15 seconds in the introduction
FMV. He seems rather creepy, but judging from the round eyeballs he
is not entirely evil.
Note: Don't read on unless you are extremely impatient or have already
played passed this part of the game. (SPOILERS ABOUND)
Riku
Riku is the name of Unknown Boy 2. He seems to be the oldest of the kids
on Destiny Island. He has a certain amount of control on the island. He
is working with Sora and Kairi on building a raft to sail to another world.
Note: Don't read on unless you are extremely impatient or have already
played passed this part of the game. (SPOILERS ABOUND)