Kitty-kitten MLCer and Jekyll/Hyde MLCers are terms were coined here by DBers to describe the different types of MLCers on the opposite ends of the spectrum. I am not sure if there's an "article" on these types that you can read up here or out on the 'Net. There have been posts here and there that brings up those two terms "kitty-kitten MLCer" and "Jekyll/Hyde MLCer."