(CLOSED) Using one interface instead of 1000 identical interfaces

I'm transferring the Totally Accurate Battle Simulator game to minecraft using a mod. At the moment I'm faced with a problem - Creating my own characters. The fact is that when creating a separate character like in TABS, I need to create dozens of separate interfaces so that nothing is confused and connected. For two characters - two interfaces and so on. I don't want to clog my mod with a lot of interfaces. Is it possible somehow using variables or nbt tags to use only 1 interface for everyone, but for each character this interface is diverse

Confusing, right? I do not know how to express my thought correctly. I hope you understand something at least.