Vexen:
Vexen is #4 of an unknown organization that is controlling Castle Oblivion. Vexen uses a very large blue shield as both a weapon and a sheild. He also uses the element of ice to come to stregthen his defense. He works as a scientist working in the basement of Castle Oblivion. Vexen comes to the upper half of the castle to converse with the other 3 members playing with Sora's mind. He is usually shown taking offense to some of Marluxia's and Larxene's crude remarks against his failed experiments, but he takes pride in his exact replica of Riku (which is used by the others to do harm to Sora). He goes to face Sora alone in the mysterious Twilight Town, ready to ultimately destroy him. Intrigued by Sora's responses, Vexen begins to give information to Sora, which angers Marluxia greatly. Are the words Vexen speaks all true, or just another trick to lure Sora into a trap?

Lexaeus:
Lexaeus is #5 of an unknown organization that is controlling Castle Oblivion. Lexaeus wields a very large black and red tomahawk to deal some massive damage to anyone in his way. To power up his offense, he uses the element of the Earth. Basically the strong silent type of the members located at Castle Oblivion. He works closely with Zexion and Vexen in the basement of Castle Oblivion, plotting their own way to take over the organization. When Riku begins getting powerful with the darkness, Lexaeus faces off with him. The original plan was to control Riku, much like the way Marluxia is controlling Sora, to overthrow the leader of the organization. After an exchange of words, Lexaeus charges at Riku. Will Riku be able to overcome this obstacle and continue to his destiny?

Zexion:
Zexion is #6 of an unknown organization that is controlling Castle Oblivion. It has been a mystery on exactly what type of weapon that Zexion controls, a mystery that has yet to be revealed. We do know however that he can manipulate the shadows to his favor. Zexion would spend most of his time in the lower half of Castle Oblivion, with Lexaeus and Vexen. He even devised a plan to use Riku, whom was roaming through the basement of the castle, to take their own control of the situation at hand. After nearly every challenge he threw out that Riku conquered, he decided to finally dirty his own hands. Riku ran through his memories of Destiny Islands, then Zexion put it in peril once again. He took the form of Sora and challenged Riku to a fight. Riku lost his will to fight after facing his lost friend, and started to give up. Will Zexion actually defeat Riku and follow through with his plan of domination?

Axel:
Axel is #8 of a mysterious organization that has taken control of Castle Oblivion. He uses two red spinning charkums as a deadly assault weapon, and also uses the element of fire to deal more damage. Axel would plot against his own organization by using Sora to overthrow their leader. But he had his own plans to follow through, secretly working to remove those who would betray his leader. He gained the trust of the other members in Castle Oblivion and played them all. He would meet up with Sora a few times, puzzling him and speaking of some similarity they shared. Axel even released Namine when he was put in charge of her, to eventually ruin Marluxia's plans. Wanting revenge, Marluxia challenged Axel using Namine as a shield. Sora soon arrived and halted any attempts that Axel was planning to make against Namine's life. With Axel distracted, Marluxia took his leave, leaving Axel to face Sora. A mere speed bump in Sora's path or maybe a revelation to what is really in Sora's heart?

Marluxia:
Marluxia is #11 of a mysterious organization that has taken control of Castle Oblivion. He brandishes a giant pink scythe, and swings it with tremendous force. Marluxia uses the power of nature to confuse and stun his foes. Marluxia was put in charge of Castle Oblivion and Namine by the leader of the organization. He used these things given to him as tools to take control and be the supreme ruler. He lured Sora to Castle Oblivion, promising that he will find something there of great importance. Marluxia then used Namine to manipulate Sora's memories, making him eventually nothing but a puppet. Larxene, Axel and the others at Castle Oblivion seemingly joined him in his quest to rule. However, after much betrayel by others, his plans were eventually brought to shame. He decided to do his own biddings and go destroy Sora personally. In the battle for power, will Sora come out on top?

Larxene:
Larxene is #12 of a mysterious organization that has taken control of Castle Oblivion. She has sharp yellow daggers to throw at any enemy with deadly accuracy. She moves with amazing agility and speed, and uses the element of electricity to torment anyone she wants. The only known female member in the entire organization. Larxene joined Marluxia in his quest for power, constantly supporting his every decision. She takes great pleasure in causing pain to people, even going so far as to take this out on her own teammates. When Sora encounters her, he finds himself filled with rage at her taunts. He is only left in confusion as she flees the battle, usually leaving him with some troubling words. Sora found her again, this time she is attempting to hurt Namine. He had run out of patience with the cruel member, going all out. Are Larxene's desires going to be satisfied or will Sora have the last laugh?