Complete Monster: Lex Luthor ends up becoming the president of the United States after an economic recession. Luthor then orders Major Force to kill Metallo and use his death to frame Superman as a psychopath, despite Metallo's loyalties to him. Failing to stop a kryptonite meteor from impacting the planet, Luthor snaps and decides he's going to allow the meteor to crash, risking the lives of billions so he can rebuild a "new Earth" with him as its ruler. Luthor repeatedly attempts to stop the heroes from trying to destroy the meteorite, purely out of spite that he wasn't the one that saved the planet and his megalomania.
Metallo's horribly-burned body. Also the sight of a very 'roided-up Luthor could also be unsettling.
If you've read the storyline the movie's based on, you can see how insane Luthor has become if he let the meteor hit.
Questionable Casting: Many fans were annoyed with the casting of LeVar Burton as Black Lightning—mostly due to the feeling that they wasted him for what ultimately amounted to be one line in the finished movie rather than the actual casting itself.
