According to the publisher, ”Nightmare Batman is a feral hunter that ravages his opponents, and can use his Vampire Batarang, Bat Swarm, Feral Embrace, and other abilities to help dominate in battle. Wonder Woman – the Amazonian princess fathered by Zeus – can use special abilities like Lasso Grab, Protection, Amazonian Prowess, and Blocking Bracers to help support her team in a fierce fight.”
Check out Nightmare Batman, a vampiric version of Batman, who fights The Joker, while Wonder Woman smacks around Doomsday.
