They weren't really permanently good. Plus, they're mainly used for comic relief anyways, so it's not as if much depended on their existence, kind of like Chris (although Chris is a bit more like a main character). Although things did take a serious turn when they (seemingly) betray Doctor Eggman, they eventually just ran back to him because they knew they couldn't really turn on their creator. Timelinesplitter 13:38, January 18, 2013 (UTC)