User blog comment:Cyclonestar/Who are the worst sonic characters EVER!/@comment-167456-20130915103438/@comment-167456-20130915115004

Nega also has a different moustache, but in any case I'd argue that the majority of Eggman and Nega's designs are determined by the clothes they wear. That's what makes them recognisable. Otherwise they are just fat men with moustaches. So differences in their clothes are as important to their designs as the difference in the shape of Sonic and Shadow's spines.