Special feature on game

I'm working on a special feature that Filippo suggested as a normal idea and now will be almost reality. Basically any particular moment of the match (such us the beginning, or a special shot or a match point) the little avatar of your enemy comes out in the corner and tells you something (like "you will lose", you can't beat me or "one more point" and so on) to improve the "arcade spirit of the game. I made few code to see if it's possible and it seems to work. Now I need to do it well and I start to run out of memory...no more ideas :)