User blog comment:B214/Question and Answers 6/@comment-3965848-20161128172019/@comment-9595671-20161128202806

Some of the more major Hero Factions members might do that, Cao Cao is in the Azazel Cup after all. So I get the feeling his teammates are the main members minus Sieghart due to his death in Vol 12.

We know Leo and Georg were in Hades' realm, but due to the Trihexa attack, they probably had to leave for their own safety and aren't there anymore. Though I'm not sure if Indra gave them their Longinus back if they did.

Jeanne and Hercules? Harder to say, they were taken prisoner by the devils, but maybe since Cao Cao joind DxD he's since gotten them parole or a pardon. From there, either he shared his talk with Vasco, or they follow him regardless if he changes goals.

Ultimately, the Khaos Brigade's role in the story is over, especially since the rumors for the last arc are the main villains are a particular group in Hell that were so bad, they probably couldn't be frozen in Cocytus to imprison them.