These are the woes of Slaves;
They glare from the abyss;
They cry, from unknown graves,
“We are the Witnesses!”
—Henry Wadsworth Longfellow, “The Witnesses”
Villains don’t form in a vacuum. The bad guys have their reasons and, of course, they consider themselves the heroes of their own stories. The Klingons and Romulans were cool adversaries in original Trek; they became even more compelling when Next Gen fleshed out their worlds and gave personalities to their characters. You came to understand why they did what they did, even if you saw the kinks in their thinking; even if their acts were unconscionable. And, as a corollary, you began to realize that not every creature who pounded fist to chest and spoke in an aggressive, staccato tongue adhered to the same reasoning.