|Relatives:||Lex Luthor (son)|
Lionel Luthor was a wealthy businessman and the father of Lex Luthor. He later passed away and his fortune inherited by his son.
Lionel was neglectful of Lex and (according to his son) was despised by the Luthor clan. After Lionel died, Lex inherited his father's legacy. Lionel's impact on Lex have made him very scornful of his father that he had refused to be address as "Mr. Luthor" as it served as a disgusting reminder of his father.