Grayven

He desires a zeta beam device, a product of Rannian science that provides instantaneous transportation on a grand scale.

[4] While the remaining Darkstars engage Grayven's army, Green Lantern Kyle Rayner faces off against the man himself.

Assisted by former Green Lantern and current Darkstar John Stewart, who suffers serious injuries in the fight, Kyle tricks Grayven into teleporting away with a Zeta Beam, after which his forces retreat.

Fearing defeat at the Green Lantern's hands, Grayven used an experimental teleporter, freeing himself, and in the process, sending Rayner into the 30th century.

Grayven next appeared during the Imperiex crisis, as part of an alien alliance that also included Maxima, Starfire, Adam Strange, and Darkseid.