User blog comment:B214/Question and Answers 6/@comment-172.56.31.48-20170325193518/@comment-134.115.162.70-20170326123739

Assuming that the leaders are still sealed with 666, here are the list:

Hyoudou Issei, Vali Lucifer, Ophis, Lilith, Sairaorg Bael, Dulio Gesualdo, Cao Cao, Indra, Shiva, and Hades.