User blog comment:Xhatefate/DxD Updates~/@comment-1359322-20140919184123/@comment-1359322-20140919200033

If Rizevim was only strong because of his SG Canceler i think Sirzechs wouldn't have bothered to form a peerage just to counter Rizevim and Vali would have tried to attack him or rather kill him in Volume 16. And don't forget, Rizevim was always fooling around, he always viewed this chaotic stuff as fun. Well we might get to see a serious Rizevim soon, then we might see how strong he is.

I don't think the Malebranche should be used in the climax of this arc, it would feel a bit too short for their introduction. Maybe they can be unsealed at the end of the fourth arc, but i think they're better off in a fifth arc, maybe one or two volumes for each character/several characters at the same time.