You can't, but if you want to, buy for Gameboy Advance or Visualboy Advance, the game Kingdom Hearts Chain Of Memories and play. Or you can get Kingdom Hearts 2 Final Mix which has a load of added extras, downside, its in japanese....
Fight.
You can only fight Terra in the Kingdom Hearts 2 Final Mix+, he is called "Enigma Soldier". Sorry.
No. The battle between Sora and Roxas is merely a cutscene in Kingdom Hearts II. The actual fight against Roxas is only available in Kingdom Hearts II Final Mix+.
You fight things.
Because after Kingdom Hearts I and before Kingdom Hearts II, there is a game called Kingdom Hearts Chain of Memories, this game is available in Gameboy and Visualboy. The reason you can't fight all the Organization XIII is that you fight most of them in Chain of Memories, where you fight Riku, Marluxia and lots more. If you want to find this game, it is in a Gameboy or Visualboy Also, play Kingdom Hearts 358/2 days on DS it will explain. Fine, I will explain it too. At a place called Castle Oblivion, some of the Organization people died from Heartless, Nobodies, and more. One organization guy called Axel, had orders to kill one of the teamembers not under his will. He had to kill Zexion I think, the guy withgrey hair and a spellbook. It was Saix who forced Axel to kill Zexion.
Kingdom Hearts 2 is the sequel of Kingdom Hearts, in Kingdom Hearts 1, it was just about Heartless and killing Ansem for the final fight to end the Heartless' attacks for hearts. In Kingdom Hearts 2, it has Heartlesses and Nobodies, the empty shells of the bodies that the Heartless have the taken the heart from. The final fight in Kingdom Hearts 2 is Xemnas, ironically, the Nobody of Ansem, which is a Heartless. In Kingdom Hearts 2, Sora gets taller, so he gets new clothes, new Keyblades, new abilities and all sorts. But the overall way of playing and story is the same. Go to worlds of all sorts from Disney to kill Heartless and Nobodies to eventually meet Organisation XIII, the leader of the Nobodies and fight Xemnas, the leader.
The one in the black coat is Marluxia of Organization XIII(pink-haired guy) .The one in red is DiZ(Ansem the Wise).
You have to fight him and then go talk to cloud
Vexen (No.IV) ("Chilly Academic") first appears in Chain of Memories, a Kingdom Hearts game for Gameboy Advance using cards as a means of battle. He controls Ice as a "scientist" among the Organization. As one of the first six, he originally served Master Ansem of Radiant Gardens, studying Heartless and hearts. Even, his original name, revealed in Birth By Sleep(PSP game), is mentioned in the Secret Ansem Reports in KH2, too. He conducted the Replica Project, which created Xion and Replica Riku.Vexen thought that he'd garner respect rather than do missions, since he's one of the first six and eldest. He has the least completed missions in Where Nothing Gathers, a round, white room with very tall white chairs.In Chain of Memories, he went to Castle Oblivion to help Marluxia continue the Replica Program. He was assigned to the Basement group, where all the Organization's brains (and possible traitors) were sent to work. However, Marluxia, Larxene, and Axel tried to overthrow the Organization. Marluxia tried to trick Vexen into fighting Sora, so Vexen tried to warn and save Sora, but Marluxia ordered Axel to kill Vexen.Other appearances: Kingdom Hearts: Chain of Memories(GBA); Kingdom Hearts 2: Final Mix +(PS2, as a data/shadow fight); Kingdom Hearts RE: Chain of Memories (PS2); Kingdom Hearts 358/2 Days(DS); Kingdom Hearts: Birth By Sleep(PSP)(as Even).
Keep fighting!As you fight,your level will accelerate!So......FIGHT!!!!!!
Hollow Bastion/Radient Garden
Kingdom hearts will not come out for the 360.