User blog comment:Imhungry4444/Fairy Tail Wikia Podcast 10/05/13/@comment-1393830-20131006021352/@comment-1393830-20131006041615

Larxene, Malruxia, Demyx and Luxord were hinted by Nomura to be a part of the Thirteen Darknesses. When asked who they could be, Nomura stated "...it could even be past members of the organization". All other members are accounted for except for those 4.