User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-121.121.95.140-20180405034821/@comment-95.210.189.106-20180405131435

Vali is a candidate for becoming a superdevil, he will become a master of is Longinus and a magic user expert, we wait the see his final battle with Issei, for see his true power. Remember that,Rias have a great talent even for a High Class Devil, she with the trainin will increase his demoniac power.. Probably in shin highschool dxd, she could exceed the ultimate class and reach the Satal level... Gasper is the one that have more potential of Gremory group( if we exclude Issei), he have a powerful Longinus, and a bishop mutation piece.