User blog comment:Vlad7399/Highschool DXD EoS Main Characters/@comment-24502975-20141009135646

I suggest you use the Questions and Answers 4 blog next time for a question like that.

I'd say they'd be between God-class (Ise, Vali, Cao Cao, Sairaorg, Dulio etc) and Maou-class or Ultimate-class (Gremory group, Vali team, etc). No need for anyone to jump into the Top 10 Strongest. As for abilities, no idea.