Anything filed in the "apocrypha" category is related to Captain Satellite in some form, but has been declared non-canonical for whatever reason. This will primarily consist of characters which have been either discarded or substantially reworked. There is a slight chance it might include story material which has been abandoned, but no promises there.
Any guest art depicting apocryphal Captain Satellite characters will not be tagged under the "apocrypha" label. It will instead carry a notation indicating which character is now considered non-canonical. This is to avoid confusion since guest art may depict both canonical and non-canonical characters side by side.