Editing Axel

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Axel is tall and slender in appearance. Like other Organization members, he wears basic black gloves and boots. His black coat, however, is one of the more distinctive ones in the group, as its sleeves close up tightly around his arms. Axel himself is also easily distinguishable from other characters in terms of facial features, made easier by the fact that he rarely wears the hood of his coat up. Axel has a widow's peak, rather small eyebrows, and thick, shoulder-length, bright red hair styled into slicked-back spikes. Xigbar teases him about it, calling him "Flamesilocks". His eyes are a bright emerald color and he has a purple reverse-teardrop-shaped marking under each eye, which is similar to {{ff|Reno}}'s facial markings. According to Saïx, the marking was to prevent Axel from crying, which Lea claims he does not need anymore.<ref>'''''Kingdom Hearts III'', Saïx''': "Always told you they'd stop you from crying. The upside-down tears." / '''Lea''': "Yeah. Don't need 'em."''</ref>

At the beginning of ''Kingdom Hearts Chain of Memories'', Axel has a mysterious, stoic, and calm, as well as cold, unforgiving, and merciless demeanor on par with that of Marluxia. In ''Kingdom Hearts Re: Chain of Memories'', he interrupts Vexen's cries for mercy with a cocky "goodbye" before incinerating him without any hesitation and seems to be amused by the deaths of his comrades as shown in the scene where he is making bets with Zexion. When Marluxia uses Naminé as a human shield against him, Axel confidently implies that he doesn't care if Naminé is in his way to get to Marluxia.  

He seems quite distant at times during his time in Castle Oblivion, ignoring Vexen's insults and almost completely unfazed by Larxene's behavior towards him. Although Axel seems to hold Larxene and Zexion in good company to an extent by making friendly conversation with Larxene while Marluxia is not around and making bets with Zexion as to which member will be defeated next, this was shown to be nothing more than an act to earn their trust. Eventually, Axel betrays Larxene by letting Naminé escape, although he seems disappointed yet satisfied with her elimination. Later on, he encourages Riku Replica to annihilate Zexion to ensure that his actions in Castle Oblivion go unnoticed by the rest of the Organization and to help Saïx keep his rank in the Organization. In ''[[Kingdom Hearts II Final Mix]]'', he appears indifferent to angering Xaldin, showing his disdain for the other Nobody.

Originally, when Axel displays emotion, he finds it unusual given that Nobodies cannot feel anything, and often refuses to acknowledge them, even mocking his ability to feel towards his death. He notes this in ''Kingdom Hearts Re: Chain of Memories'' when he begins laughing, but catches himself and stops. However, it has been hinted by Xemnas, and Axel himself, that by being close in contact with Sora's heart, Axel began to feel emotions of his own.  

In ''Kingdom Hearts 358/2 Days'', it is shown that Axel does not like to talk about his past. Whenever Roxas or Xion asks him about it, he gives a brief or vague answer and then tries to change the subject. It is implied that he had some sort of experience with women in his earlier life, as seen when he gives Roxas a piece of friendly advice to "not push the wrong buttons" with women. He also believes that women are complicated, claiming that real women are a "double dose of complex" (since he thinks that real people are more complex compared to Nobodies), and Nobody women are a "single dose".  

Axel's catchphrase is "Got it memorized?" (originally localized as "Commit it to memory" in ''Kingdom Hearts Chain of Memories'') whenever he refers to an important name, but mostly when he is introducing himself, even when he is Lea. On a side note, Axel is the first character in the series to curse, since he uses the word "hell" after letting Naminé go, asking Sora to "give [him] one hell of a show", but in the remake, it is changed to "Try and make it enjoyable".