Character

A character is a person who exists in a story. They may or may not be actually real, or they may only exist in the book, movie, or game.

Regardless if the character is original to the story, that is, they are a canon character, the PPC is sworn to protect their integrity as part of the canon, even if they are a Canon Sue.

If they are a character original to the writer but not to the canon, they are an original character, and can be a Mary Sue, and will be taken care of by the PPC.

There is a third category, the fan character, who is not original to the canon or the writer, but might be used throughout the fandom or by several people for the canon.