John Corben, the man with the Kryptonite heart, has long been a physical threat to Superman. In many of his early comic book appearances, however, his motivations were thin, often boiling down to him ...

Superman is one of the most powerful beings in the DC Multiverse, having started his journey nearly 90 years ago. The Man of Steel has remained an iconic superhero ever since, and numerous iterations ...

Kryptonite has long been the most dangerous substances to Superman. It was first introduced in the Superman radio series before making its way to the comics. Since then, it has been used by multiple ...