will allow you to Edit certain items on each of you characters. The ones I have for MM6-8 will allow full editing, that is, stats, resistances, spells, conditions, skills, inventory items, game time, and money/However, the one I have for MM9 will only allow the editing of individual stats, skills, level, XP, and resistances as it only edits the HDR file.
With a character editor, you don't need to have the game running while you edit your characters.
If you like, I would be happy to send you a copy of my editor.