ROBERT VAUGHN!?
Yes, this is the only of the original Superman films which does *not* feature Lex Luthor (Gene Hackman) at all. Instead, we have Vaughn as Ross Webster, our evil industrialist.
Vaughn is no Hackman, but he's a competent actor when he wants to be. After all, he single-handedly classed up Corman's "Battle Beyond The Stars". Like in that film, he brings the same sort of intensity to his villainous role.