Help Changing Battler Sprites in Game


Purpose: In the game I'm working on I would like for there to be an event/item that once obtained changes the appearances of the battler sprites to show information about the fakemon (like having a Sense, Sensor, Gauge, Piercing Sight, Observe, Peep, Analyze move from Final Fantasy that gives you all the monsters stats). I would achieve this by just having a duplicate battler jpg for all my fakemon that has all the relevant information on it so you can see it in fights. I was wondering if there's any simple script I could create in order to do this? I'm not that savvy with Ruby to do it well, but not opposed to learning how to do it if someone can point me in the direction of any tuts for it. Anyway, thanks for reading.