I was using the code converter to put in cheats to upgrades stats like my HP, MP, PWR, SPD, etc... I used a few on Marle and it sort of turned her into Crono.
In the menu she's Crono and if I go to techs it shows Crono's instead of hers so I can't heal out of battle with her but in game and on the overworld map she's her.
If I have her and Crono together it puts Crono's avatar on his slot and hers becomes blank. I'm including a few screenshots so you can see what I'm talking about
FORUM ADMIN NOTE
: Unembedded the large images and made the font smaller. ~ fsvgm777