As an ENTJ Leo supervillain, Lex Luthor would be confident, charismatic, and highly strategic in his approach to achieving his goals. He would possess a natural leadership ability that would allow him to command an army of minions and followers. His keen intellect and analytical mind would enable him to see weaknesses and exploit them to his advantage. He would be driven and ambitious, always seeking more power and control. Despite his ruthless nature, he would have a certain charm and charisma that would make people want to follow him, even if they knew he was evil. In summary, Lex Luthor would be a master manipulator, a cunning strategist, and a natural leader with an unwavering drive towards success and power.