So I'm trying to get the last art, which is aero, but my partners keep getting in my way, and not only that, i have them targeted, but then they move, start spinning, and i accedentaly give aero to goofy, who then runs past every white mushroom, harming them, and making them disapear. I wish i could just disable them, get an aero art, and reequip them. Darn you Goofy

You can. If you go to goofy and Donalds settings then you can switch them to staying by your side

I think you can change their behaviors in KH1, I don't really remember.

 

But it also helps if you just take it slowly, too. Casting Aero on Goofy is the result of a spazz attack, which only gets you emotional pain, not Arts.

Go to the menu and somewhere in there you can change Donald and Goofy to where they won't attack things very often. Good luck.