General info :
Axel (Akuseru), originally a Radiant Garden citizen named Lea (Ria), is the Organization's resident assassin who is entrusted with killing the group's traitors and was the original Organization's number eight. He is also the best friend and mentor of Roxas, whose relationship with him enables Axel to re-experience human emotion as a Nobody. Nicknamed the "Flurry of Dancing Flames" (Odoru Hi no Kaze), he uses the power of fire manipulation to emblaze his chakrams, and he commands the "Assassin" Nobodies. He frequently utters the phrase, "Got it memorized?", which he does to achieve his own ideal of immortality through other people's memories. Years before becoming Axel, Lea was Isa's childhood friend and he befriended Ventus, whose appearance Roxas emulated due to their connection to Sora, during the events of Birth By Sleep. When he and Isa snuck into the castle, they found a secret area underneath and befriended a girl being held there called "Subject X", who was being used for Ansem the Wise's experiments. As Lea and Isa continued to visit Subject X, Lea was determined to save her but one day she had disappeared. Lea and Isa attempted to find her by becoming apprentices to Ansem the Wise but this led to Lea's transition to Axel as he and Saïx, Isa's Nobody, were inducted into the Organization but remained true to their intentions of finding Subject X and regaining their humanity.