Ambiguous tag. Consider using one of the following:

• canon_(company) - A brand of camera.
• canon_couple - A pair of characters from an official series or franchise who are canonically considered lovers.
• canon_x_oc - When both a canon and original/fan character get paired together, whether SFW or NSFW.
• cannon - A type of projectile weapon.
• official_art - Artwork made by an official artist or design team, as opposed to fan art.
• on_model - Fan art that is stylistically nearly indistinguishable from the original source material.
• six_fanarts_challenge - A Twitter meme where (up to) six canon characters are chosen to appear in the image.

If you were using this tag to indicate the lack of fan characters, simply tag the franchise/copyright (e.g. the_lion_king) and don't tag fan_character.