Luthor Unleashed

S1, E26: Luthor steals a powerful weapon developed by the army and prepares to sell it to weapon dealers. Later, while Luthor is working in the Shuster laboratory, he causes an explosion, and Superboy saves him by blowing the chemical fumes out of the building. The fumes kill Lex's hair and cause him to go bald, and now Luthor's hatred for Superboy is greater than ever. He prepares to sell the weapon to anyone who can kill Superboy, and three assassins try their best but are defeated by Superboy. Meanwhile, Lex's hatred for Superboy has grown and led him to a change.