Wilson Fisk, aka Kingpin, is the best villain to appear in a Marvel TV show to date, and one of the very best to appear in the whole of the MCU. The reason is not because of how powerful he is, but because of his weaknesses. Hes extremely dangerous, yet vulnerable; cold and calculating, but also very lonely. He knows what hes doing is evil, and takes absolutely no enjoyment from it, but does it because he views it as the only way to save the area he grew up in. He and Daredevil are essentially two sides of the same coin. Hes super imposing physically, possessing bear-like strength, and a total raging sociopath to go with it. Hes also extremely intelligent, resourceful, and serves as something of a boogeyman: just the fear of facing his wrath is enough to make a man drive his head onto a spike.