"The evil doctor (also known as Eggman) has been a bad egg from the very beginning. Nobody knows quite where he came from, but he is definitely behind any problem that comes up. Dr. Robotnik loves machines. He loves them so much that his idea of a perfect world would be to have it full of nothing but machines. He thinks they are beautiful and he likes that he can control them. A genuine genius megalomaniac, he spends all of his time trying to replace the natural world with his beautiful machines He is not very concerned about saving the planet (being a notorious polluter), and he particularly likes the idea of exploiting the oceans for their riches (This really gets to Sonic, because Sonic loves the oceans and can't stand the idea of Robotnik messing with them). In order to have ultimate control in his quest, Robotnik must find and control all of the Chaos Emeralds, and most importantly.....Sonic."