Zexion

Easily the most enigmatic member of Organization XIII, Zexion is marked by his unfaltering calmness, intellect, eloquence, and diligence within the Organization. Courteous, yet sometimes stern, he is occasionally seen allowing a deeper personality; smirking or outright grinning - something he and Larxene both share in common. He is 19 years old and is 5'5" tall. Unlike most of the other members, he conducts his tasks in a veil of secrecy. Zexion also holds a fondness for literature, the arts, and humanities, which is noticed in the weapons he utilizes and his manner of speech when speaking to other members. It was most notable in Kingdom Hearts 358/2 Days when he had assisted Roxas in his tutorial mission, thoroughly explaining details in a polite fashion. During the same mission, he indicated that he had a strong dislike of laziness, insisting that Roxas should continue even after his main mission objectives have been fulfilled. In addition, it can be noted that he is very loyal to the Organization, and it is reflected in his work attitude and quality, as seen during some instances in 358/2 Days.

His weapon panel in the Proof of Existence is broken in Kingdom Hearts II, but it is revealed in Kingdom Hearts Re:Chain of Memories that his weapon is, in fact, a Lexicon, which attacks through a flurry of pages and would trap people within it. as the lack of a visible weapon panel may stem from developers' indecisiveness to retroactively assign Zexion with a weapon as his Lexicon first appears in the 2008 Re:Chain of Memories remake and not the original 2004 Gameboy Advance title, hence its non-appearance in Proof of Existence. much Like Riku, Zexion has the ability to identify the "scents" of others, with great accuracy and at great distances. The "scent" he smells may be based off other things than mere odor and is affected by presence of Darkness in the heart, an entity's power in the castle, and other factors.

Zexion stands out in Kingdom Hearts: Chain of Memories as the mastermind behind the actions of those members who are actually loyal to the Organization. He is aware of the Organization's decline, calling it "deplorable". Zexion also takes his missions seriously (in contrast to Demyx or Xigbar, who do not).

Of the three members (the other two being Lexaeus and Vexen) with the lowest thrones in their meeting chamber, named "Where Nothing Gathers", he seems to have the highest, as for Vexen's is the lowest, indicating he might be the most skilled of the three, as he is the mastermind for the plot chronicled in the Reverse/Rebirth storyline, in which only failed through Axel's betrayal of both sides; as Axel's betrayal of Marluxia, by releasing Naminé, caused a chain reaction, as it was Naminé, in the form of Kairi, who assisted Riku in breaking free of Zexion's trap in the Destiny Islands, which caught Zexion offguard. Immediately after, Axel himself appeared and had the Riku Replica kill Zexion.

The fact that he acts as the mastermind behind Lexaeus and Vexen shows that his rank in the Organization may in fact be higher than his number would lead one to believe. This is further reinforced by an additional scene in Kingdom Hearts II Final Mix where he is seen to have a conversation with Xigbar. He reprimands Xigbar's habit of eavesdropping, and even talks down to him, stating that he should get back to work. When Xigbar would inform him that he was hoping to just have a "friendly chat" with him, as Zexion tells him he has more work to attend to and finishes the conversation by telling Xigbar that if he is through working, then it would be in his best interest to get some rest. In addition to this, as Saïx had him eliminated so that he could rise in the ranks of Organization XIII.

Zexion to some appears to be emotionally distant, but this is not completely true, as observed in his demise. Upon hearing Axel's dialogue with the Riku Replica, Zexion's horrified reaction shows that he clearly does not want to be eliminated. He has an undying sense of duty to the Organization and goes to almost any length to ensure the success of his missions. At times, he can also be amusing and jest with other members when the rare moment shows itself.

A good example of this is in Kingdom Hearts Re:Chain of Memories where it's shown that he and Axel are having a friendly gamble at which Organization member in the castle will be the next to be eliminated (something they've been apparently doing ever since Vexen got eliminated by Axel), which Axel proves to win that particular round when he accurately predicts that Marluxia will be the next to die. Zexion is also particularly cheeky towards Vexen, giving sly and smart retorts when Vexen attempts to reprimand him with his superior ranking.

Zexion also prefers not to fight his own opponents directly and instead relies on using his powers of illusion to deceive his enemies, such as his attempts to manipulate Riku in the Castle Oblivion construct of Destiny Islands.

Despite being one of the Organization's founding members, Zexion physically appears to be among the younger members, and is certainly one of the smallest in stature (save for Roxas). He wears the signature black Organization cloak, boots, and gloves, though his cloak's sleeves are slightly bell-shaped. Zexion has bright aqua colored eyes, though only his left one is clearly visible, the right one being covered by his long, layered bangs.

His steel blue hair (appearing more grey in the Gameboy version of Kingdom Hearts: Chain of Memories) sports messy bangs that completely cover the right side of his face, reaching about an inch or two past his chin. On his left side, his bangs, though still rather long, are shorter than the right side, partially covering his ear. A few strands of hair fall over the exposed section of his face. The back of Zexion's hair is quite a bit shorter than the front.