Something that the fans of a Fandom came up with that isn't Canon to the actual story or character. Not to be confused with Headcannon, which is a personal fanon that is usually only used by you or a small group.
"The fanon character is completely different from the Canon character!"
by AstroIsOffline May 27, 2021
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When people get really emotionally intense about something when in reality there's nothing interesting happening.
When people have read so much fanfiction that they begin applying all these intense emotions from the fictional universe to things that are happening in real life, which in reality are probably just really boring and uneventful.
Person 1: "Why does she always make weird and random Doctor Who references?"

Person 2: "It's called Fanon Goggles."
by danisntonfire February 27, 2014
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A great psychiatrist of the post WW2 era. Frantz Fanon was perhaps the most influential decolonialist philosopher of the 20th century. A highly trained psychiatrist, Fanon was also a revolutionary soldier fighting the Nazis in WW2. He doubled his efforts towards the Algerian revolutionaries fighting French barbarity in the post war period.

Fanon however will always be best known for his papers on existential deconstructionism, essentialized notions of racism and his perspectives of a black man in the west.
Frantz Fanon was a renowned philosopher, soldier and revolutionary. Despite dying at the tender age of 36, Fanon has left enough decolonialist articles to last a critically thinking student a lifetime to ponder.
by franz fanon January 14, 2008
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a group of people who make OCs, say “hard anal”, do random shit, and get sad.
Guy 1: what community are ya in?
Guy 2: uhh… total drama fanon.
Guy 1: oh cool! wanna show me around?
Guy 2: …
Guy 2: …yeah sure! wh-why not…?
by the tacky twat December 25, 2021
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Basically when something Fanon like a theory, character, idea, etc gets introduced to a fandom that people think that the Fannon character, theory, idea, etc is canon. Hence the name CANON FANON EFFECT. A "canon" theory, character, etc.

There are two variations to look at this effect. Oblivious or Disregard

Disregard: When people are aware that this character, theory, idea, etc isn't canon. But treat said character, show, theory, idea, etc as if it was canon.

Example: The Creepypasta Fandom often draws Slender man with the operator symbol in the background or most times anything really related to Slender man and sometimes even referrers to it as the operator. Even though the fandom knows that the operator and Slender man aren't the same entity.

Oblivious: When someone isn't aware that said idea, theory, character, etc isn't canon.

Example: The Creepypasta fandom thinks that Eyeless Jack has an origin in which he was used in a sacrifice to become a monster. Even though he never had an origin, to begin with.
Guy1: Hey man your drawing sans eye wrong. It supposed to be glowing with a flame.

Female1: Actually sans never had shown to have a glowing or flaming eye, just one that switches colors really fast.

Guy1: Wait, really? then why does the fandom draw it whenever he's mad or using gaster blasters?!

Female1: Must be the Canon Fanon Effect.
by Mcfat10 March 29, 2020
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