I know it's not possible to have ALL characters in a save file, I guess I should have worded it better. I'm asking for a save with all characters that are possibly available in one run. That way I can play the game and pick the ones that are missing.
I've also been trying for over 5 hours to make a character modifier cheat, but for some reason I can't find one. I've found other codes already, but the character one mystifies me. I just can't find the address.
*edit*
I think the addresses shift around in this game. I made two item codes earlier, and now only one works and the other changes the wrong spot now.