In TMJ there is a cool trick that you can do to mutate into other characters. To do this follow these steps:

1. Go to any room in TMJ and open the URL (enter address) box.
2. If it isn't there, at the end, type "&character=" (without the ".
3. After where it says "character=" type the name of a character. The names are : Jasper, Hockfin, Brenda, Yorick, Villager1 and Villager2.
4. Hit "Go" and when the page loads you will be a different character!