2nd Generation Goggled Gliders: Von Hammer II & McNider II

Rittmeister Hans Von Hammer and Doctor Charles McNider were noble individuals with heroic dispositions. However, while McNider was a doctor and a healer, VonHammer was a warrior and a killer. Each faced tragedy, the Rittmeister from the blind greed of his society and the Doctor the literal blindness inflicted by a bullet. As the Enemy Ace and Doctor Mid-Nite, these two doppelgänger led among the most diametrically divergent lives of any two counterparts on Earths One and Two respectively.

At some point, possibly in the 1940s, Von Hammer died of undisclosed causes. In the late 1940s, McNider himself technically died alongside his fellow members of the Justice Society when each of them was attacked by an insane museum guard impersonating history's greatest villains. While Von Hammer had progeny in the form a descendant named Heinrich Von Hammer, McNider faced a drastically different situation.

After being brought along with four other Justice Socialites to Transformation Island by their colleagues Wonder Woman and Black Canary, each of them was revived thanks to Paula VonGunther's Purple Healing Ray (of which the original model was invented by Wonder Woman herself). Months after the Society defeated the crazed museum bandit, the Justice Society faced Professor Zobar Zodiak, who bound the male members of the team on his perpetual motion machine.

Freeing themselves by reverting their bodies to that a adolescent boys using Zodiak's elixir of youth, McNider gained that which the other four members already gained years before, a second chance at a new life! While Flash, Green Lantern, Hawkman and Atom gained extended life due to exposure from the shadows emitted from their foe Ian Karkull, a revitalized McNider/Mid-Nite was born that day!

After a sky duel in which Heinrich assumed his forefather's role as the Enemy Ace versus Batman, the German lost his life when his plane crashed. At this point, it was his rival and the true heir to the original Enemy Ace's legacy, the Batman who took up his role. As such, shortly after during a cosmic crisis involving Creator 2, the cosmos deemed that Doctor Mid-Nite's closest Earth-One counterpart was the Batman, since both previous Enemy Aces had since perished. Soon after, the Batman of Earth-Two would himself die in battle saving his allies of the Justice Society.