Headcanon is an idea, belief or aspect of a character’s personality or physicality that is present in a piece of fanwork that does not correspond with information present in the canonical material. Fans and fanfiction authors will often write with these aspects of their headcanon in mind. In certain cases, specific aspects of headcanon can evolve into fanon which is a specific fandom belief is accepted to the point where it becomes widely accepted concept in the fandom, sometimes escalating to be embraced by canon work.
13Oct 2015