I unpacked some pkg files thanks to deppth and the textures in the GUI.pkg seems to be the one holding the character portraits. But I'm not sure if its the only asset file I need to alter. Can't test atm, don't have the saves. I suppose I can draw a mustache on Hadesman (whatever he's called) and see if it shows.

Dev.pkg errors when unpacking so... I assume it's encrypted, if that is the case and the actual assets that needs modding is in there then well, fuck, they really are a bunch of dog-water bitchasses.