User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-16281343-20150718071342/@comment-16281343-20150718090207

Issei's Diabolos Dragon

The crimson armor turned into "organic". The plate armor's color has shades of red and black. The number of wings is now FOUR and each wing has a cannon stored inside it. It's power is so massive that even Rizevim's Sacred Gear Canceller is overwhelmed by it.

Bonus: Out of the three Super Devils, Rizevim is the weakest.