Can lex luthor be killed?

If this is referring to the Superman movie made in 1978- that would be Otis played by Ned Beatty.

Kevin Spacey.

Not exactly- he does have some good motives. But he always tries to destroy Superman and that certainly makes him a bad guy to the Man of Steel himself.

It is told as if Lex Luthor always got his way until Superman showed up.

As a teenager, Lex Luthor invented a kryptonite antidote to cure Superboy of kryptonite poisoning, but he had an accident in his lab and caused fumes to escape. Superboy used his super breath to...