User blog comment:GramdOne/Lifebar problems(again :\ )/@comment-3495717-20140406230143/@comment-3495717-20140407153818

Yes. Some lifebars use different sprite numbers. For example, the Hatsune Miku: Project MUGEN S.P. uses the following sprite numbers:

9000,0 = small portrait for select screen 9000,1 = big portrait for select screen and vs screen portrait 9000,35 = lifebar portrait 9000,9000 = simul lifebar portrait

So yeah custom lifebars typically use different sprite numbers. You should probably find out which ones the Persona 4 lifebars use.