Head Canon 

An idea or opinion about a fictional series (Book, TV, Comic, or otherwise) that is true in one's head, but has not become a canon fact.

In my head canon, Jade and Dave from Homestuck are totally in love with each other.

Head Canon by Nellaxival August 4, 2011

Head canon 

An interpretation of a piece of media that is not shown or confirmed in the original but is believed to be true simply for preference.
May also include direct deviations from the canon.

In a perfect world, instead of Philip, Grog would have recited Percy's full name perfectly as his 'fancy name' and, after a moment of stunned silence, Percy would have added, 'You can just call him Percy.'"

...This is my new head canon.

Head canon by Haomakk April 7, 2021

Head-Canon 

Not necessarily canon, but canon in your own perspective. Your own alternate perspective of what’s canon.

In my head-canon, Mario in the original Donkey Kong games from the early ‘80s is actually the father of Mario and Luigi. That Pauline is probably a different Pauline. Maybe it’s modern Pauline’s mother. The second Mario in Donkey Kong Jr. is Mario and Luigi’s random uncle.

Head-Canon by AntiCircumcisionMan March 19, 2023

headcanon

Used by followers of various media of entertainment, such as television shows, movies, books, etc. to note a particular belief which has not been used in the universe of whatever program or story they follow, but seems to make sense to that particular individual, and as such is adopted as a sort of "personal canon". Headcanon may be upgraded to canon if it is incorporated into the program or story's universe.

In my headcanon, John and Mary bicker like siblings when they're around each other... They just seem like they're brother and sister to me!

headcanon by the-deudliest-firearm July 17, 2012

Headcannon 

A personal belief or interpretation about a story or pice of media that has not been confirmed nor denied in the media itself.

It’s my headcannon that they eventually make it back home, but we’ll never know because the series ended with them attempting to escape.

Headcannon by Hellohihey February 9, 2020

Headcanon

(also written as "head canon," but it's really one word.)

An idea, belief, or aspect of a story that is not mentioned in the media itself, but is accepted by either the media consumer themselves or the fandom in general. If it is confirmed by the creator of the story, it becomes canon.

In Homestuck , a popular webcomic , many suspect the headcanon that the trolls are carnivores, because of their natural homicidal tendencies and sharp teeth. It's never explicitly stated in the comic that this is true, but it'd be kind of dumb to assume they're a race known for salads and ice cream sundaes.

Headcanon by TickTockTimeTraveler October 12, 2014

Headcanon

Now... reality can be whatever I want...
-Thanos

person 1: omg i headcanon todoroki and dek-
person 2: please stfu

Headcanon by ._.daydreaming April 11, 2022