Xike

Xike is Rank XVI within the original Organization XIII. He controls the attribute of Poison, using it to slowly drain and weaken his foes, and wields a Naginata in combat. He is the true Nobody born from Kei, an ancient Keyblade wielder and the twin brother of Akemi.

Xike joins the Organization one week after Number XV (during the events of Kingdom Hearts 358/2 Days). Shortly after his initiation, he is dispatched to Castle Oblivion during the events of Kingdom Hearts: Chain of Memories. He is assigned to assist Axel, though his true objective is to act as a silent observer and gather intelligence on the unfolding rebellion. After surviving the events at the castle, Xike returns to The World That Never Was. He continues to execute the Organization's agenda until he is ultimately defeated by Sora in Halloween Town during the events of Kingdom Hearts II.

Personality

Beneath his approachable and friendly exterior, Xike is a serious, outwardly apathetic, and highly arrogant young man. True to his element, he possesses a "poisonous tongue," frequently dropping hurtful truths and sharp sarcasm to manipulate or belittle those around him. He is highly observant, constantly analyzing people's behaviors to uncover their weaknesses and exploit them. While he usually prefers to fly under the radar, he secretly doesn't mind being the center of attention when it suits his twisted amusement.

He rejects the concept of friendship, believing solely in the strength of family bonds, a tie he tragically feels is lost to him forever. He shares a dark, somewhat sadistic sense of humor with Larxene, frequently laughing at the misfortunes of others. While the two get along quite well, there is no loyalty between them; they would betray each other if necessary.

Initially, Xike treats Xylek with cold indifference, viewing her merely as a "fake" wearing his late twin sister's face. However, his instincts tell him there is something different about her, beyond just her black hair and amnesia. Over time, Xike slowly begins to soften toward her. While he remains inherently distrustful, he secretly comes to enjoy spending time and going on missions with her—even if he claims it’s only because it gives him the perfect excuse to ruthlessly mock the misfortunes of her and Demyx.