How has lex luthor s character evolved over time?

Lionel Luthor, portrayed by John Glover, first appears as a special guest in season one of Smallville and becomes a series regular from season two through season seven. He is introduced as the father of Lex Luthor and the founder and CEO of LuthorCorp, serving as a key figure in the series’ early exploration of the Luthor family dynamic. In season ten, Lionel returns as a parallel‑universe version of the character in a special guest role, illustrating the show’s willingness to revisit and recontextualize established characters. The evidence does not cover Lex Luthor’s development, motivations, or changes over time; therefore, no conclusions can be drawn about Lex’s character arc from these sources. Any discussion of Lex’s evolution would require additional verified information beyond what is provided here.