"Headcanon" is basically an individual fan's personal image of the parts of a story or world that we never really saw.
For example, my personal ideas on how Fire Nation politics and upbringing worked during the rules of Sozin, Azulon, and Ozai would be by "headcanon" of that time period.
Sometimes a piece of one fan or group of fan's headcanon will popularize via their theories and/or fanfic to the point that it becomes "fanon" (and if the series is continued, some people's headcanons might turn out to closely fit to what ends up being actual canon).
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branchandroot
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Date: 2011-03-15 03:39 am (UTC)For example, my personal ideas on how Fire Nation politics and upbringing worked during the rules of Sozin, Azulon, and Ozai would be by "headcanon" of that time period.
Sometimes a piece of one fan or group of fan's headcanon will popularize via their theories and/or fanfic to the point that it becomes "fanon" (and if the series is continued, some people's headcanons might turn out to closely fit to what ends up being actual canon).