WARNING: This article contains SPOILERS for Nightwing: The New Order #5
Nightwing: The New Order shows what happens when Superman finally kills Batman - basically, the end of the DC Universe as we know it. If casual fans think we're exaggerating, then it's actually Dick Grayson who is being underestimated. He's been the star of New Order since the beginning, but only now has the secret cause of his shift from superhero to government soldier been revealed. He may have acted as Bruce Wayne's more compassionate, and diplomatic partner... but when Superman killed the only man who could stop him, it was Nightwing who brought an end to the age of superheroes.
Fans will want to know that specifics around Superman's murder of Batman (he really does do it in New Order's future), and how writer Kyle Higgins makes that act the turning point in Dick Grayson's life. It didn't just cost him the closest thing he had to a father. With the way New Order is going, it may cost him his own son, as well.
Superman Killed Batman in New Order's Future
Once the shock of seeing an armored, bearded Superman of the future wears off, the Man of... regular flesh gets a chance to talk to Jake Grayson, Nightwing's son. Since Superman is the most iconic superhero to lose his powers, and Jake's father was the hero who actually deployed the power-negating weapon, it's their first topic of conversation. But Clark doesn't hold any grudges, even revealing that the weapon itself - an Apokoliptian device that Darkseid used to conquer worlds without their heroes - was in Batman's possession. And more importantly, that it was Dick Grayson who first convinced Bruce Wayne not to use it.
So, what was it that finally pushed Dick to reconsider, and wipe out superhumans en masse? Jake chooses not to say it in front of Superman, but both know the answer. That's right, Superman killed Batman with an incinerating blast of heat vision. And if that description doesn't conjure up enough imagery on its own, readers will be pleased to see that Trevor McCarthy and Dean White's illustration of the event isn't easily forgotten.
And for all their differences leading up to the tragedy, the death of Bruce Wayne by Superman's hand (eye?) convinced Dick Grayson that extreme measures were needed. He deployed the superpower bomb in Metropolis, and DC's future began its march towards a police state that would rather put superhuman citizens in suspended animation than allow them to walk the streets.