The VulnerabilitiesDespite his awesome super-powers, Superman continues to be afflicted with certain important vulnerabilities.
KryptoniteThe term used to designate any surviving fragment of the exploded planet Krypton, home world of Superman. These varieties of kryptonite are similarly hazardous to Supergirl, Krypto the Superdog, Beppo the Supermonkey, and all other surviving natives of Krypton, unless otherwise noted.
Green KryptoniteGreen Kryptonite, is fatal to superpowered Kryptonians but harmless to non-superpowered Kryptonians, It induces lassitude and inertia followed by death if not removed in time from Superman's presence.
Red KryptoniteRed Kryptonite inflicts bizarre and unpredictable—albeit temporary and nonfatal—symptoms, as when it divides Superman into twins or transforms him into an infant or a giant ant. It's effects last only 48 hours and is never repeated on the same Kryptonian again.
Gold KryptoniteGold Kryptonite permanently takes away Superman's powers
Blue KryptoniteBlue Kryptonite is harmful to Bizarro Supermen in the same way that Green Kryptonite is to Superman
White KryptoniteWhite Kryptonite is harmful only to plant life, though it can also affect some vareties of microbe.