I actually had a case where my ally was charmed and used Dominate Mind on another ally and he was actually on my side because it was my character using the spell or something similar.
If it's not possible it's not possible but I wouldn't see why it wouldn't be possible to use the property of charm and turn them around or simply use the "enemy" version of it.
But if you have another solution for my idea I'm all ears.
Hmm, well you could have a poke around EnemyCharm in the skill data. There isn't a specific enemy charmed status though.
