The Grammer on the Redirect template was off so that’s why I corrected it. For example, you added “This article is about the Avatar of Nyx that is the final boss of Persona 3. For the god itself, and its other appearances, see Nyx.” seemed improper especially when it is said as “That is the Final Boss” So I added “ This article is about The Avatar of Nyx the final boss of Persona 3. For the god itself, and its other appearances, see Nyx.” I just got rid of “That is the”. If so, did I sound improper?
Since you said "Initials aren't going to make them any less cluttered or easier to read", I won't make any further edits to the infoboxes. Like I stated it's all my opinion and I'm not going to have an argument over how things should look. I'll leave things up to you and whoever else decides to edit them.