Appearances: S1: Pilot, Hothead, Jitters, Shimmer, Stray, Reaper, Crush, Tempest; S2 - S7; S10: Abandoned
Family: parents, Lachlan and Eliza Meehan Luthor; late wife, Lillian Luthor; sons, Lex, Julian, and Lucas Luthor; daughter, Tess Mercer
Bio: Before becoming founder and CEO of LuthorCorp, Lionel Luthor was raised in Metropolis's Suicide Slums by his abusive father and "gin-soaked mother." With help from future crime boss Morgan Edge, Lionel killed his parents, then used the insurance money to start up his company. Eventually, he fell in love with and married a woman named Lillian, and in 1980, they had their first child together, Alexander "Lex" Luthor. In 1989, Lionel brought Lex along on a business trip to Smallville, where they were caught in the middle of a meteor shower.
Played By: John Glover & Tom Welling
Lionel in Clark's body