Lionel Luthor (1944-2011) was Lionel Luthor's doppelganger from Earth-2, LuthorCorp's billionaire founder/CEO, as well as Clark Luthor's adoptive father. After escaping to Earth-1, he briefly became LuthorCorp's fourth CEO, schemed against Clark Kent, dueled against his daughter's doppleganger Tess Mercer, had tried to bring "Alexander Luthor"/Conner Kent to his side as an heir, as well as sold his own soul to Darkseid to revitalize his son's doppleganger Lex Luthor of Earth-1.