User blog comment:B214/High School DxD Hero Discussion/@comment-2601:8C:601:5692:1431:9C1C:B77F:EE3F-20180608010856/@comment-2601:8C:601:5692:1431:9C1C:B77F:EE3F-20180608033743

Another thing, take a close look at the magic circle the appears when Lady Phoenix "calls". The crest is different than the House of Phoenix crest we've seen in other seasons. It looks like a stylized "P", though you only see it inverted before her image appears.

On that note, at the press conference, the banner behind the Bael team has a stylized "B" and the banner behind the Gremory team also has a symbol (though less obvious).