Thread:LucidPigeons/@comment-24469175-20160228194417/@comment-26205772-20160308144726

Jumping Down the Slippery Slope, Start of Darkness, Big Bad Slippage, Gradually Slipping Into Evil, Cynicism Catalyst... there's a whole slew of tropes for the "dark side" of character development. Even for villains themselves, it's entirely possible for a villain that once had some standards or was otherwise just "standard evil" to become a lot more cruel in what they do. This is usually a result of Motive Decay or sometimes Flanderization; it's also exactly what happened to King Boo in Dark Moon, as he went from a villain who'd willingly protect his own men to one who brainjacked his own minions and tried to destroy the universe after being consumed by a lust for revenge.