A good film cannot happen without a good hero. That much is clear to everyone. The fact that one cannot happen without a good villain as well seems to have been forgotten by many filmmakers throughout the decades and we have been left with a bunch of cardboard cutouts instead of real bad guys of flesh and blood, that we can actively recognize as real people.
We also got our fair share of criminal masterminds, villains that you can't help but admire for their intellect, if not actively root for them. Here is a list of mostly human antagonists of motion pictures that rank among the smartest characters in cinema. Some half-human and alien admissions are also present: