User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170407023114/@comment-31137559-20170407072723

Another Longinus possessor as the Extra Joker is nearly impossible. First is that we already have Dulio so it would be so unoriginal. And two, Heaven would be in so much trouble for hiding something like that from the forces. If it was a Longinus possessor, Azazel would have known. Look at how much criticism the Baels got for having Sairaorg keeping Regulus a secret. And then we have very powerful humans who don't have Longinus or Sacred Gears(Souji and Macgregor and Arthur). Who knows? It could be one of the 'Miracle Children' for all we know.