Hi I'm a Blender Modeler/Texturer and made my own custom textures on the P5 model for Jack Frost for the Frost Five or Shaved Ice Frosts whatever you prefer.
I did this just for fun but I think it would be really cool to actually have a proper mod for these guys since the only mod I can find across the whole franchise is one for a simple Melon Frost texture over Jack Frost in P3 Portable. I'd like to see them with unique stats and resists other then just a pure texture swap. They can still reuse the same animations though that's totally fine!
These guys don't get enough love and sadly I don't have the know how to properly do them justice outside of making the textures. If anyone with the know how is willing to lend a hand I would be super grateful and will provide my textures (If needed.) They can mostly follow their levels and stats/learnset from Soul Hackers 2 unless you want to get creative!