Anyone who knows the name Superman knows that his greatest weakness is Kryptonite. The radioactive crystalline ore was formed under the extreme pressures and geological instabilities that ...

Warning! Spoilers for Action Comics #1080!Even someone as powerful as Superman is quickly brought down by Kryptonite - but not his brother. As the weakness of every Kryptonian, using Kryptonite is ...

Kryptonite has been integral to Superman’s mythology since it was ... gold, blue, white, and pink. Some are obviously in the show for the laughs, while others are ominous nods at future storylines.