Shin Megami Tensei: Persona 3 Portable

[AwkwardPon]

So Hypnos, Moros, and Medea seem to be completely playable.

My personal gripe with the is that despite the fact that official portrait artwork for them exists IN THE GAME, they use Loki placeholder art.
Are there any codes that can locate specifically the Loki placeholder art? I already figured out how swap artwork within the files, and got Moros working because I really love his design and I want to use him for a run.
I am finally at the final step but reached this road block of not knowing where the heck the loki artwork is located. If anyone can help I'd appreciate it!!

Sidenote: no, swapping the regular loki artwork meant for the loki persona doesn't work which proves that there is a second file of loki artwork specifically meant to be used as a placeholder.