Nice. Thanks for assisting me with finding the model for the BP names. I'll try messing with it a little bit when I'm free. Till then, I'll update when I have my results.
Edit:
Ah. I just found their names listed in the Texture files in the Info_en.pac. I think I'll work with those instead.
Edit again:
I was able to remove battle portrait names by making them transparent. All I had to do was export their names found in the MiscData[30] in the info_en.pac and then black them out with my a preferred image editing software.
Before:After:After I testing it on my wii, it worked successfully.