Who Are Superman’s Most Devious Villains?

Superman has had a number of devious villains over the course of his lengthy and illustrious career. He’s faced down Lex Luthor and his numerous plots to bring him back down to Earth or even usurp his title as Superman. He’s also faced off against a number of the New Gods including Darkseid, Kalibak, Desaad, and Steppenwolf. He’s even had to deal with Brainiac who has used Kandor, the capital city of Krypton, against him on numerous occasions.