What are the Kingdom Hearts nicknames?

In the Kingdom Hearts series, characters often have unique nicknames that reflect their personalities or roles. Notable examples include Sora, who is often called "The Keyblade Master," and Riku, referred to as "The Wayfinder." Additionally, members of Organization XIII have code names based on their human names, such as Axel being known as "Lea" and Xion as a replica of Sora. These nicknames add depth to their identities and relationships within the story.