I've been having fun in my current FE3H solo run, and I want to do solo runs in other games in the series, but some of the characters I want to use are recruited until late in the game. So I'm looking for save editors for any of the FE games. The only one I've found is FEFTwiddler for Fates, but there doesn't seem to be an option to add characters to a save file there, so it doesn't really help me.
