As a subject matter expert in the field of comic book lore, particularly with a focus on the DC Comics universe, I can provide you with an informed response regarding the effects of black kryptonite.

Black kryptonite, also known as Kryptonite Noir, is a rare and dangerous variant of the mineral kryptonite, which is known for its harmful effects on beings with Kryptonian physiology, such as Superman. Here are the effects of black kryptonite:


1. Aggression: Black kryptonite is known to cause extreme aggression in those exposed to it. This can lead to violent and destructive behavior.

2. Split Personality: In some storylines, black kryptonite has been shown to create a split personality in the affected individual, often resulting in a darker, more sinister version of the character.

3. Physical Weakness: Like other forms of kryptonite, black kryptonite can cause physical weakness in Kryptonians, potentially leading to a loss of their superpowers.

4. Illness: Exposure to black kryptonite can also cause severe illness, similar to radiation poisoning.

It's important to note that the effects of black kryptonite can vary depending on the specific storyline or interpretation by different writers and artists within the DC Comics universe.

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Black Kryptonite is a Varietal of Kryptonite, made by heating Green Kryptonite to extreme temperatures. It can split Kryptonians into two separate beings, made up of that person's good side and his or her evil side.read more >>