User blog comment:Queen Misery/Assistance/@comment-1070010-20140527230937/@comment-1070010-20140527232849

You'd need some really big sprites for that- I do believe that you can event in battles- one event being to summon an enemy. You might be able to "summon" the various parts of the boss at specific points in the battle. You've got to find some kind of workaround. I'll take a look soon and see if I can't figure something out that'll work.

True, workarounds get complicated, but sometimes, they are the only solution. For example, I'm using a map as a menu in the Rebirth project, plus hundreds of common events for the visual novel aspect of the game. Tedious, but sometimes you just have to roll up your sleeves and do it.