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column I indicates the chapter where the character is first mentioned (or shown without being named), column J indicates the chapter where the character is shown and named as such (or in the case of personalities with secret identities or masks, the moment they are exposed), column K indicates the chapter where the character is killed (or is mentioned to have died after a prior appearance or mention), an asterisk after a number means that the name of the character is first revealed (often retroactively) outside of the serialized chapters and regular volumes

for columns I and J, a bracketed number [X] indicates the chapter where the courtesy name of said character is first mentioned, a number with parentheses (-Y) indicates the chapter where other aliases or titles of said character is first mentioned, a number with braces {Z} indicates the chapter where a character is already dead upon being introduced (this is in order to distinguish cases where a character dies or is said to have recently died in a particular chapter), a number prefixed with 's' signifies a side story chapter, a pair of numbers (with the first prefixed with 's' and the second prefixed with 'e') signifies an episode of a given season of the animated adaptation

for column B, the schema A -> B indicates that the character primarily identified with one faction A eventually joined another faction B, the schema C <- D means that the character primarily identified with one faction C was known to have been a member of another faction D before defecting