Name change utility

Open reframework menu (the mod only works while in the title screen)

Select a slot from the slider

Edit the name

Click the button.

The change isn't visible immediately if you're currently hovering the save file you're editing, but if you go to a different one and back, you'll see the change has applied.

You have to save at some point after editing a name. You don't have to be on the character you've edited, though.

ALWAYS BACK UP YOUR SAVE FILE. I am not to be held accountable for stuff going wrong, even though it really shouldn't. You're using this at your own risk. I have personally never experienced any save file corruption with this.