Back again with in What If scenario, but with last Alpha Duo, what would happen If Marinette and Adrien were paired with Stellar and Koree ? The Infinity Duo is the less explored Alpha Duo
To be honest, the Infinity Duo is probably the least compatible Alphas for Adrien and Marinette. I don't think their personalities would match too well, nor would they provide the support I'd say the children need compare to other Alpha kwamis. Not to say that they wouldn't bond with Adrien and Mari, I think they would all love their kwamis/holders, but it would be a shadow compared to other pairings.
Adrien is in a situation where he needs emotional support. Where he feels the need to hide everything he's going through; and Chat Noir has always been his escape and chance to express himself. Meanwhile Koree is a very removed kwami, without Stellar around she's not really going to be showing any affection, not even the more aloof kind that Plagg often gives. When she expresses the most is with her cunning and craftiness for her own entertainment, which she probably wouldn't be doing much of because she's aware it could hurt Adrien. What I would find most risky of all would be her attempts to help Adrien, which would probably be encouraging him to hide and ignore everything even more on both sides of the mask. She wouldn't be doing it maliciously, it is in her nature to solve a problem by simply making it not exist, but I think this would make Adrien's mental state much more worse than what he's dealing with in canon. I think Raccoon!Adrien would be a lot more susceptible to akumatization overall because of this.
As for Marinette and Stellar, I think we'd get a very similar incompatibility, though not to the same extreme as it would be for Adrien. In fact I think there's would be some instances Mari and Stellar would work well together, as I think he'd be good at snapping Marinette out of her spiraling panics... but I also think he could trigger her anxiety a lot as well. He is very blunt, and very honest, to the point where he's not going to offer reassurances when one needs them. If anything he just might end up feeding her anxiety when he talks about a reality of a situation. He's not pessimistic, but seeing the life a superhero leads it just might seem he's that way with how much danger is in their lives. And like with Koree, Stellar won't express himself as much without his other half, which can't happen with secret identities in place.
Flipping kwamis would probably be the best match up with this duo. I think Adrien very much values honestly, and would appreciate Stellar's blunt truth. I also think this would help Adrien do a lot of reflecting about his treatment in his home life and reality of his abuse. But on the other side of that coin Stellar still wouldn't be able to provide the emotional support Adrien needs or inspire action to create change. As with Mari and Koree I think we'd see very similar things as we would with Adrien holding the Raccoon Miraculous, with Koree methods of encouraging hiding thoughts and feelings away instead of addressing them, which can do more harm than good.
But enough with the negatives of these match ups, because I definitely don't these guys would hate each other or anything. Much like Adrien with Plagg, I think Adrien would recognized pretty easily that Stellar/Koree do care, even if they don't put on a show about it, which I think either kwamis would appreciate in a holder. I think Koree would very much find ways to entertain herself at the Agreste household without involving Adrien and much to annoyance of the adults. I think Koree would much enjoy making Adrien's schedule vanish or Gabriel's most recent designs disappear just to see their panic, all while giving Adrien a bit more free time as well. Adrien would just have to make sure that she doesn't offer to do the same to the negative people in his life.
And like I mentioned, Stellar would be fantastic at snapping Marinette out of her anxiety spirals, but I also think he'd do well at helping her keep on top of things. He'd do well at reminding her of plans she made and what was coming up, and do well at keep her from over scheduling or pushing herself beyond what she's able to handle at a moment. I also think Stellar would really just enjoy being apart of Marinette's life, with all the substance and emotion and sometimes just pure chaos and creation. While he wouldn't necessary be directly involved with it all, I think he would just really appreciate all the depth and aspects that come from being around it.