User blog comment:Piraka king/How many?/@comment-4774362-20110512030833

Sulfeirus is evil because he sees the concept of it as a way to rule over everything, he's just prideful, of course taking pride in some things isn't bad unless you let it get out of control and in this case Sulfeirus did just that. He also wasn't given a second chance after his rebellion and when he finally realized that he just stayed evil and stopped caring.