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When creating or editing articles, it's best to be mindful of the source of the information you are using. Different kinds of sources should be treated differently in different kinds of articles.

Canon, Official, and Credible Sources


The "canon" is the body of work which constitutes the accepted official events and items of the show's world. The term "canon" originally referred to an officially sanctioned body of church laws and scriptures, and was used to distinguish from works which were not recognized by the church, like the Gospel of Thomas. The same idea applies to the notion of "canon" in fandoms: it distinguishes information that is established as being "true" in the world of the show from information which has been reported by other sources but not confirmed.

For Heroes, the only official canon source is actual broadcast episodes. Any information that does not appear on screen is not considered part of the Heroes canon.


The Graphic Novels, which are written and produced alongside each episode by the show's writing staff, are the most reliable non-canon source. Still, it's technically possible that the writers could at any point contradict information from the graphic novels in a broadcast episode. When using information from a graphic novel, be sure to clearly label it as coming from a graphic novel.

Official Sources

Some non-canon information comes from the creators and broadcasters of the show. Such official sources are generally more reliable than non-official sources, such as fans, entertainment media, and bloggers. Official sources include things like Greg Beeman's blog and the website. Other official sources include interviews with the show's creators.

Credible Sources

A credible source is a source that, while not a part of canon, is generally believed to be reliable. Credible sources are usually official sources, but not all official sources are credible. For example, the photo captions on, while official, have been proven unreliable on several occasions. Some photos are from scenes which were not included in broadcast episodes, and one caption even mistakenly stated that D.L. was The Haitian.

Unofficial Sources

Unofficial sources include other websites, magazines, newspapers, and television programs. Although such sources often focus on unbroadcast information and thus full more under the umbrella of "published spoilers" or "fan theories", some include information about aired episodes as well. This includes things like IMdB]'s cast listings for broadcast episodes. Some unofficial sources are more credible than others.

Published Spoilers and Fan Theories

Published Spoilers

Published spoilers are information about upcoming episodes or unaired details which are published by an established source, such as an entertainment media magazine or website. It also includes aired promotional spots and trailers for upcoming episodes.

It's important to label spoilers appropriately (using the {{spoiler}} or {{unairedspoiler}} templates) for a few reasons. First, it allows readers to avoid reading information about upcoming episodes that they do not wish to see by warning them, and second, it makes it clear that the information is speculative. Even the most credible spoiler from the most reliable official source can still change before the episode in question airs.

Fan Theories

Fan theories are speculation about upcoming episodes or unaired details created by fans of the show. They include such things as fan posts on message boards and forums, as well as most fan weblogs and podcasts.

Using Sources

Information from canon sources can be used anywhere within any article. It is not necessary to cite a canon source (in other words, the episode), but you can do so if you believe it will make the information more clear or easier to find. Remember to cite canon sources either parenthetically or in a section title to maintain in-world perspective if appropriate.

Information from the graphic novels can also be used freely within articles, but should always be cited as coming from the relevant graphic novel.

All other information is technically speculation. All speculative information should be labeled as such and a source should be given. Credible and official sources are generally acceptable in Notes sections. All spoilers should be confined to spoiler articles, and published spoilers should be distinguished from fan-created or fan-reported spoilers.

Fan theories should be confined to Theory articles and clearly labeled as such. Since most fan theories are espoused by a wide number of people and few, if any, are truly original, there's no need to provide a citation for fan theories.

Real-World Articles

Articles which relate to the real-world (for example, cast and crew biographies) obviously do not need canon sources. For such articles, it's generally sufficient to use information from published, credible, or official sources.