Canon is the whole of facts that are considered true either within a certain context or by an organization. Examples of Monster High canon are that Cleo de Nile is afraid of the dark, that the 2011 TV special is called "Fright On!", that the Monster High book series contains four books plus extra material, and that Toralei Stripe is voiced in English by America Young.
The Monster High Wiki only accepts contributions that relate to canon (with one exception). It used to accept non-canon contributions in the form of Original Characters until April 16, 2011, at which point the Monster High Fandom Wiki was founded. If you wish to tell the world about your OC, please post information on them on the Monster High Fandom Wiki.
What is Monster High canon?
As per this article's intro, Monster High canon is every bit of information regarding Monster High that is true—"true" being defined on the Monster High Wiki as "by Mattel or with approval of Mattel and with lasting consequences".
The "with lasting consequences" bit is a specification that answers how the wiki deals with fan material being acknowledged by Mattel. Such cases include the December 2011 Create-a-Monster profiles, several reblogs on Tumblr, and the handful of custom dolls produced for the winners of Monster High contests in several countries. Though the wiki may report on this fan material, it is not considered canon because none of it gets acknowledgement prompted by Mattel.
Acceptable fanon
There is one exception to the No Fanon-rule and that is the naming of some of the doll assortments. A small number of assortments have no name at all attached to them. Often, the Monster High fandom makes up for this by inventing a name themselves. Examples of this are 'Killer Style' and 'School's Out'. The Monster High Wiki has opted to use fanmade assortment names if there are no official ones available. It is, however, at any opportunity repeated that the used name is fanon: on most pages by the quotation marks around the name and on the doll assortment's own page within the infobox and within the Name-section.
Notes
Mattel and fans
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