Some characters use the Power of Darkness to show off how cool they are. Not this guy. When darkness isn't dark enough, the only thing that can properly express your morally dubious badassery is the Power of the Void—power over nothingness. How this works can vary. How are you going to make cool fight scenes when a character's power is the ability to control nothing? In many cases, this is by giving him lasers, energy blasts, and various other powers that other characters already have.