NGL. I sometimes think about the costume (FEH Pass) alt that a lot of my favorites could get. Sumia would be the best flower fairy. Yeah, it's a little on the nose because of her fortunes, but also a little bigger that she wants to do more, for her self-worth and for others. Because Sumia still dreams big, and she's a lover of fairy tales and what they represent. Daring adventures, stories about friends, about love, and though there's hardship, it's about making it through relatively okay to the end after all that's been fought for.
Stahl and Sully are two for two, in that it'd be strange to just not have them together. From a general point of view and a pairing one. But also that they're opposite, to a degree, in that Sully would be in a Dvergr/Niðavellir attire, like Reginn, but Stahl is Jötunheimr. They just have the opposite of the usual of what's expected. Stahl's not big on battle, though he's still good at it if it comes to it. Where Sully's got a lot to learn about diplomacy and not cracking heads.
Priam's so versatile that it was genuinely hard to decide and not say "everything", (yes, even the fairy outfits), but though he's not small (re; not short) by any means. He'd also be dressed in the attire of Niðavellir, minus the machine mount, since it'd be about power that's learned in how to control it, but also for the sake of others. Something about Priam and Reginn just feels to me that they'd be great friends?
Especially because Reginn, herself, understands that a weapon is a tool, but it also depends on who is the one wielding it (quote her Bonds event with Marianne) and that this matters because those that understand this make the weapon entirely their own from that journey. Some of his quotes (that I made) would be these:
"The armor of Niðavellir is the strongest I've seen."
"Queen Reginn knows the importance of training what allows a weapon to grow with its bearer. They're more than objects if treated with respect."
"With the power of the Dvergar, Ragnell's been given a fresh breath at life...for now. I will work at restoring her with my own effort."
"Hm? Hey. Careful! I'm stronger than what I was before."
"The dark armor is new for me, but I think I rather like it. It reminds me of an old friend."
And yes. This is Priam talking about the otherworld Yen'fay. Because I can and will give myself my own food.