Here is a simple keyboard secret for Poptropica. Anytime in the game you can quickly change your character’s look to a completely new random one by pressing CTRL + SHIFT + R (CMD + SHIFT + R on a Mac). Keep pressing it over and over again to try out lots of different looks.
This secret is one of the poptropica cheats for the keyboard. Another good one is the Poptropica Pumpkin Head Cheat.