Basic Trope: A character who is initially heroic, but is slowly becoming as evil as the things he fights. * Straight: Norbert is a Serial Killer Killer who becomes a pitiless Knight Templar. * Exaggerated: Norbert ices one bad guy and instantly becomes a Complete Monster. * Justified: Norbert is catching The Virus from his kills. * He's heard too many Hannibal Lectures, and they're starting to stick. * He is starting to doubt the existence of morality due to the monsters he fought against, while pure desire takes over. * Black and White Morality slowly shifts to Gray and Gray Morality during the battles, turning Norbert mad from doubt about what he is doing. * Inverted: Heel Realization. * Subverted: Norbert learns valuable lessons from his battles with evil