Lets compose Incusion Criteria Ok we leave it too long I propose following criteria to incuding entries on this list The element must has signification impact in the work Simply having word Cthulhu as grafiti in one comic panel doesn t noaable enough Nor does having Deep One as one of minor enemies in games A Necronomicon can be spot on main character s bookshelf doesn t count either As enemy in games the thing must be at least a major boss The necronomicon must has vital role and it must be Lovecraft necronomicon second hand derived from Evil Dead doesn t count If the names are different from mythos citation need Nope similar name isn t enough You may think it s obvious but there is chance that the name actually derived from something else or the author simply want weird name In fact many of deities in Aztec mythology has name as weird as Cthulhu How about that