Hyena (real name: Summer Day) is a DC Comics supervillain and an enemy of Firestorm. She was a normal human before her transformation into a were-hyena. In this form, she is violent, destructive, and predatory, but Summer as a human is fairly good-hearted.
When Nick Fury warns the anti-registration team of Black Hat’s plan with the Nanites, they are also put up with those who tried to unravel the conspiracies surrounding the war. Meanwhile, some heroes from another universe are on the trail of Black Hat. A rift comes from the place known as the Void, where Black Hat gets some new helping hands and a group of forgotten heroes are put into the chaos. The Pro-Registration team is still trying to win and get the corrupted villains under control. But Black Hat’s forces started to attack and Steve and Tony soon realize that they have to put their differences aside to fight this Armageddon.
