One thing about Billy Zane, he did not have to hide inside a stiff rubber suit with built-up muscles. He was in great shape and it made his Phantom more believable.
If you get a chance to see the 1940s PHANTOM serial, Tom Tyler was just as good as he was in CAPTAIN MARVEL. It's cheap and shoddy compared to even a B picture of course, but Tyler is absolutely convincing. When he punches the bad guys, they stay down with none of the five minute slugfests.