Kryptonite
- Created from the irradiated remains of Krypton
- Emits a unique radiation which has different effects depending on the type
- Its radiation could be blocked by lead
- Emits a radiation that was extremely toxic to super-powered Kryptonians
- It neutralizes their powers
- Once removed, the affected individual would recover
- Prolong exposure could be fatal
- It was Green Kryptonite that passed through a cosmic cloud en route to Earth
- Removed inhibitions from super-powered Kryptonians
- Brings out their rebellious & immoral personality
- Effects were immediately countered by distance
- Radioactive piece of the planet Krypton
- Striped super-powered Kryptonians of all their abilities, turning them mortal
- Prolonged exposure by humans leads to them having perfect health
- If used on Bizarro, it would magnify his powers & could cause him to explode
- Effects were immediately countered by distance
- Created by heating green kryptonite to extremely high temperatures
- Separated the personalities of a single being into two separate beings;
- A second dose of the Black K would join them back together
- Induces intense hallucinations & paranoia in Kryptonians
- Also capable of negating a Kryptonian’s powers
- Effects are undone when it leaves their systems
- Removed superpowers from Kryptonians permanently
It did this by destroying their cells' ability to process solar energy
