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 a great ...

The radioactive ore originated from Superman’s home planet, Krypton, making it poetically fitting that fragments of his destroyed world became his greatest weakness. While Green Kryptonite ...

Superman’s one weakness proves to be the tiny, fractured remains of his destroyed home planet, Krypton, which come in the form of glowing, green rocks known as Kryptonite. In the comics ...