This issue tells the origin of how Null and Void got their powers, and it was by a sacred stone that the natives of Haiti, who had captured them after their plane crashed, worshiped for centuries.
Haiti.#sthash.YRov001A.dpufnatives who captured them worshiped. This stone however is of alien technology from a race called the X'ult.
Forced to place their hands on the stone, Solomon and Peter McBryde were both branded with a strange tattoo. When those tattoos touched, they transformed into Null and Void.

Null had the power to dull or restrict the senses of any target within his range. Void can access a strange sub-dimension of Earth known as the Void, in which he can teleport himself and any object into and have to reemerge. People he sends through the Void are usually disoriented when coming back. (Total Comic Mayhem ref. )

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