History is full of titanic figures, men and women who managed to make a truly significant impact on the world around them. Some of these have been largely viewed as “good guys,” for they often made the world a better place as a result of their work, whether it was charity or inventing. These heroes of history have, at times, been unfairly maligned, while others deserved the opprobrium they received after their deaths. In all of these cases, these villainous good guys reveal an unpleasant truth: People, particularly “great” ones, are rarely as morally uncompromised as we'd like them to be.