I am a fanatic about dragons... fun fact in the D&D universe Io is the original god of dragons, he however is split in half during a great battle, those splits become bahamut(good,honor,law,) and tiamat(evil,cruelty, greed) i have never seen Io depicted as anything, but bahamut is depicted as a Platinum Dragon and Tiamat a 5 headed dragon. one head for all the evil chromatic dragons,red,blue,white,black,and green