Actually, the message didn't matter, I was just putting it in the common event for the morph temporarily to see exactly WHEN the common event would trigger, and now I know that they don't apply until your out of a battle.
I think that by the time they learn how to morph they'll have another party member with them anyways, but I've heard about game overs happening that way. Ok, lemme test with the in battle events....
Yay! It was a little sketchy, but it worked!!! I'll have to position the "Hero" and the "Monster" in the same battling spot for it to look better, but other than that, the characters changed! ^.^ The order of the characters changed, too, but that's no problem (I don't want the player to rearrange the order of their characters. You're stuck! MWUHAHAHAHA!)
Ok, for all you who want to make your character morph as well, here's what I did:
Put the skill with the switch.
Yeah, I know, I like switches too much.
And presto! Yes, I realize that she changed from a girl to a girl, but her monster sprite isn't ready yet. Anyways, the only thing left to fix is the fact that they move back when the skill is activated, the order of the characters has changed, and I need to make both the monster and the human keep the same level, exp, and skills ^.^
Hmmm, this means that I'm going to have to have morphing events for all of the characters in the battle events and copy-paste them and put them into every one of the monster groups. Oh well, it's worth it ^.^ Thank you everyone!