RPG Maker Forums

I just got RPG Maker VX Ace and have been playing with it and reading some tutorials. I've experimented with creating different encounters and even forced event battles. But I had an idea but I just can't seem to figure out how to do it (or if it's even possible)

I made an encounter in which the hero enters the final room of a dungeon to confront the boss. I have set to where you see him standing in the center of the room, and that once the hero steps in front of him he enters a dialogue and then a battle starts. I got to where the boss defeats the player (impossible to win on purpose) and start a second scene where the boss boast his powers makes some thunder and shakes the screen. The whole cliche I am almighty routine. After his short boast then the animation for a dark attack envelopes him and knocks the hero backwards. I got there. Where I want to go from there is have a mysterious figure (appropriately named ???) appear in front of the boss between the boss and hero and start a second battle (if possible that the player does not control) where ??? uses a single spell to defeat the boss and finish the fight.

Where I have problems is trying to figure out how (if) I can make a new character appear on the map after a certain event, and run a second event after completing the first. If anyone has any idea how to do this or if it's even possible I would greatly appreciate it.

And before everyone starts pointing out how cliche and unoriginal it is. I know. It was just the scenario I had in mind to figure out how to make characters appear and after being up for 18 hours trying to figure it out (yes I Googled but either I suck at it or nooone made a tutorial on this kind of event) I decided to come here.