Luthor is a surname used by several characters in the DC Universe, such as Lex Luthor, Lena Luthor, Lillian Luthor and Lionel Luthor. Lex Luthor was created by Jerry Siegel and Joe Shuster and has had a lengthy publication history, first appearing in Action Comics #23. (1940)
New Earth
Lex Luthor's niece
Earth 3
Possible relative
Donnerverse
Lex Luthor's nephew
Smallville
Lionel Luthor's father
Smallville
Lex Luthor's half-brother
Smallville
Lex Luthor's ex-wife
Smallville
Lex Luthor's wife