Something like Zeriab's script Modern Algebra posted at the Script Database forum.
The only reason is that I am request for a different caterpillar script is because I cannot load the demo for Zeriab's.
Why can't you open the demo?
Anyway, diedrupo converted trickster's caterpillar to RMVX a while ago, so if you're still lookng you might want to try it: http://www.rpgrevolution.com/forums/index.php?showtopic=8040
Or Woratana's: http://www.hbgames.org/forums/viewtopic.php?f=11&t=49866&view=next
Does this script cause the game to recognize the other party members as targets for things such as "show balloon icon"?
I didn't like eventing them out during a conversation through control branches..
Zeriab's would. Woratana's wouldn't.