User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170517150911

It wonder if Ajuka, Serafall, and Falbium have the Ultimate Bishop, the Ultimate Knight, and the Ultimate Pawn in their peerage. Since Sirzechs has the Ultimate Queen and the Ultimate Rook in his peerage. But that Ultimate Pawn is Issei now, I'm 90% sure.