Lex Luthor

Lex Luthor is the former CEO of Luthor Corp, enemy of Superman and adoptive brother of Lena Luthor.

Early life
After Lena was adopted in to his family, Lex made her feel especially welcome.

Villainy
Lex set off an earthquake in California, which was tended to by Superman.

For unknown reasons, Lex declared war on Superman, committing unspeakable crimes in Metropolis before being brought in by Superman himself. He was subsequently incarcerated for 37 consecutive life sentences.

After Lena took over Luthor Corp, with plans to rename it to L-Corp, he hired assassin John Corben to assassinate her. However, he was eventually nearly killed.

Trivia

 * In the DC comics, Lex Luthor is the archenemy of Superman.