Mmmmaybe! It depends on how Ratatosk develops, since obviously he will have different development from in canon in Aather as well. :|a The Lion is interested in bound objects, and Ratatosk in canon is very much bound to his anger and pain, even if he's consciously in denial of the part where he hurts. It's going to depend on whether Ratatosk in Aather decides to embrace that aspect of himself or not and how much. The Lion would see him as firmly bound pre-canon and fraying progressively over the course of it, and then undoing like... one knot in endgame. Ratatosk pre-canon would definitely be of interest to the Lion, and Ratatosk during canon would be as well, just for the "...but isn't it easier to just stay within your chains? Don't waver. Just accomplish the role you have set yourself and deny anything else" part. Ratatosk in endgame, not so much, because while he's still limiting himself incredibly he's not likely to go back to blind wrathful fixity and hidden trauma, either.

That's a long way to say "idk yet we'll see," but Ratatosk will certainly be interesting to him early in his arc regardless. :Db

Now, since I've just talked about mine some... have you ever considered apping a Persona? What would they be if you did?