Sonic is a 15-year-old hedgehog known for his fast speed (hence his name), and his laid-back and cocky attitude towards serious situations. His arch-nemesis is Dr. Eggman, an evil scientist who plans to conquer the world. However, much like Mario and Bowser, Sonic always foils Eggman’s various schemes, no matter how hopeless or dire the situation may become. Sonic’s best friend is Miles “Tails” Prower, who at times acts like a little brother to Sonic and aids him in any way he can. Knuckles the Echidna is another close friend, but was also his first rival, though their rivalry is now much friendlier. Another one of his friends is Amy Rose, who harbors a one-sided crush on him and desires to marry him.