Black energy / dark energy

Dark energy is, obviously the opposite of white energy. It's pure evil, that can be used only to destroy. It was created only to keep the good - evil balance in this universe, but almost immediatly it's amount was lowered to the miinimum. It broke out of control and started killing everything that can be killed. It was just to devastating to stay in this world.

So we don't see much of black energy right now. There were some Zorkians who's powers were connected with it, but as soon as they got to know their powers, they had to be neutralized.