Zexion
Zexion was a bookworm who loved to read and learn new things. He was also a bit of a loner, and preferred to spend his time alone with his books. One day, he was reading a book about the history of Kingdom Hearts when he came across a passage about a mysterious organization called Organization XIII. He was intrigued, and decided to find out more about them.
He eventually tracked down the organization's headquarters and joined their ranks. He quickly rose through the ranks, and eventually became one of their top members. He was known for his intelligence and cunning, and was often used as a spy by the organization.
However, Zexion was also a kind and compassionate person, and he often felt conflicted about the organization's goals. He eventually came to realize that they were evil, and he decided to defect. He helped Sora and his friends defeat the organization, and he finally found peace.