User blog comment:Collbrande-Ex-Caliburn/Hyoudou Issei's Peerage composition hopes/dreams/hypothesis/@comment-10330822-20161112235347

I don't really see any fantasy members being individuals that have grudges against any of the main cast. So a Medusa wannabe seems out of the question.

We've brought this up on the Volume 22 spoilers page, which there is a thread talking about this very thing.

Personally, I'd like to see people already introduced but not developed being in his peerage, people like Lint Sellzan or maybe Kiyome, Tadaomi, or Miraka. Elmenhilde seems very likely, since we know he has a child with her later on, but Le Fey seems unlikely because it doesn't seem like the kind of thing Arthur would want, besides I like the fact she is just his contracted magician. Elmenhilde I feel would make a good Rook or Pawn, but I would like to know more about her before really deciding which category is better for her.

I can see Rias being his Queen, similar to how Grayfia is Sirzechs's. This could suit for why he hasn't picked a Queen yet, because he is technically still "facing" Rias at this point in the tournament. After it, he may make her his Queen.

Issei's own theme for his peerage is that he wants to use it to validate himself as Rias's husband. Meaning that Rias is the main focus. He may use his current peerage to challenge Rias's peerage, prove his worth as a King, and then take Rias as his Queen. I feel it would be a nice cycle, she is Issei's servant as his Queen, while Issei is her's as her Pawn. Servants to each other, is all the same as being equals.

As for his Pawns, I would perfer he not dump his Pawns into one or two people. It just really seems to spoil the potential for his Harem King persona. But at the same time, he needs strong people, he can't waste them on one piecers like Riser did.

I could see one x4 or x5, and then maybe a couple of x2 pieces. We already know that you only need x4 pieces to turn someone with Dragon King potential, so I feel he could get a lot of mileage out of only a couple pieces per Pawn.

I like your idea of his having multiple faction species in his peerage, I feel it would really fit his universal hero persona. However, things like Yuki Onna seem just like more Yokai stuff, which I feel is getting too generic anime for the series. He'd be better off with say something from the Greek faction, which we don't see much of. Bennia would be very good, because the Grim Reaper is very opposite to anything he has, and it ties into the the whole Hades-Greek theme, and its pretty different than Xenovia for a Rook. The real question is if Sona would trade her. Some people wouldn't think so. Also, because she was part human, there's also a chance she has a Sacred Gear,

Also for Knight, I feel something very different than Church-European sword variant, something like Japanese swordswoman would be nice. Like a female version of Kiba. Irina is pretty much like this already, but we don't really know if he can take Angels now or in the future. Besides, the combined Church Trio seems excessive given Issei's actual personality, if not completely ironic.

I think the main question we have to ask is where the story is going. They've made a pretty good story and done a pretty good job of staying away from God-level enemies. However, they've laid ground work for Issei to tussle with Indra and Hades. This is why I feel Bennia might be interesting, because we could explore more of her past in the Land of the Dead, and maybe why she dislikes Hades. Issei has a habit of "saving" his girls from something and thus winning their love, so his peerage should follow the same theme. Hades already seems to dislike Issei because his involvement with the Hero Faction is what caused Sirzechs to be so dismissive with Hades, and frankly, embarrassing Hades in front of Azazel.

Indra, I feel, is probably going to be confronted in the next few chapters.

Also, we still haven't fully explored the Five Great Families of Japan. We've met Himejima of Suzaku and Nakiri of Ouryuu. However, we are still missing the Byakko, Seiryu, and Genbu families.

If they are really going to be worked into the series, we might see Shinto gods as well, which have been noticably absent from the story.

So, basically, there is a lot of material for another Japanese character, so a Yokai maybe a possiblity..