User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-2601:87:8300:20D0:4578:499D:F51A:F5E6-20190801024042/@comment-10330822-20190803143834

It hasn't been confirmed if you can be another piece while having the inactive King Piece, but that doesn't mean it isn't possible. After all, the King Piece is completely different from the regular normal pieces. Besides, the fact she is taking a much more active role in the story by joining the Kuoh Academy implies she is probably going to be much more than just a "local wife". In many ways, she's more active now than Issei's literal Queen is.

Also, the fact she has a peerage is just because she is a High-Class Devil, but that still makes her no different than Ravel. The only thing special about being a High-Class Devil is having a peerage, which in turn is place under the King of their High-Class Devil, just like how Issei's peerage is technically under Rias' peerage. So it would just go Rias' peerage > Issei's peerage > Roygun's peerage. Presumably, when Issei's other peerage members become High-Class, they'll get their own peerage's too, Roygun would just have a head start.

It was stated she was banned from the Rating Games, because she cannot be trusted to not cheat with the King Piece. Reversing that would hard because it'd be too hard to guarantee she'd never cheat again. We and Issei might trust her, but that doesn't guarantee anything.

However, seeing as she is on Issei's team she obviously seems to be able to be on another person's team, given that she is under someone else's watch now.

Vali wasn't cheating at the literal Rating Games though. Besides, he was pardoned, Roygun has not. Being strict on cheaters is important because if they are easy, it encourages others to cheat because the consquences are low.

There is a difference between being a criminal and a cheater. Being a criminal doesn't mean you can't be trusted not to cheat, but being a prior cheater does though. In fact, people like Vali and Cao Cao are hyper competitive, that's why they joined Khaos Brigade in the first place, to fight stronger enemies rather than support boring peace. This tournament is right up their alley.

Remember, the Azazel Cup is basically a war game. So being an "evil enemy" doesn't really matter, because the whole point of the tournament in the first place is to help settle the vacuum created by the gods and other leaders that are trapped fighting Trihexa.