User blog comment:GooerGaming/High School DxD BorN episode 8 review/@comment-74.173.162.168-20150523173845/@comment-3965848-20150523195828

It definatly wasn't Great Red, if that was true the there be no point in her bringing together the Khaos Brigade. I checked back and it was Azazel she said it to, in Vol. 6 Uroboros Ophis said to Azazel  “Impossible. Azazel can’t defeat me.”, which was also when Creuserey appears.