So there is a point in my game where there is a 5th party member, so I wanted to make a 5 person caterpillar but I could never get it to work. I rearranged the order of actors in the actors screen because I wanted it to be a specific order, and all of a sudden the 5th party member shows up in the caterpillar, but the party is in the wrong order. I change the event to put all of the party members into the right order, and now the 5th member is put into the party (I can tell through the party menu) but she doesn't show up in the caterpillar.