Anti-Kryptonite, from 1959’s Action Comics #252, has no effect on super-powered Kryptonians but affects non-powered Kryptonians the same way Green Kryptonite affects Superman.

Superman is able to stop the meteor, but it breaks up and showers the Earth in Kryptonite. Superman Unlimited #1’s cover boasts that this is the beginning of the Emerald Age, and things change ...

Maybe periwinkle kryptonite, for Disco Superman, just in time for the 1978 Richard Donner film. For us mortals, "kryptonite" works without the cape and the big red "S." It's a moral weakness, a ...

Superman is hailed as the golden standard for the entire genre, but does it still deserve that title in the modern era?

Kryptonite officially debuted in Superman #69 in 1949, but it wasn’t green back then. The deadly hue came years later when Superman was sabotaged aboard a ship lined with lead walls.

Kryptonite is a vital material for Superman and other Kryptonians. This includes pink Kryptonite, blue Kryptonite, gold Kryptonite and more such colorful rocks from the DC universe.

Superman and his weakness to Kryptonite are well-known even outside of comics. The word Kryptonite is as synonymous as Achilles’ Heel in referencing someone’s unique vulnerability. Few people ...