 During Loeb's run on the series he created Imperiex, introduced a Bizarro created by the Joker in the "Emperor Joker" storyline, and also helped with a controversial storyline in which Superman's nemesis, supervillain Lex Luthor, became the President of the United States.Loeb's run on the series included the crossover event "Our Worlds at War", which saw the destruction of Topeka, Kansas, serious damage to Clark Kent's nearby hometown of Smallville, and Superman adopting a costume of more somber colors to mourn the heavy loss of life during the event.Loeb's run ended with issue #183 (August 2002).