In the 1960's, ince DC was radically reworking heroes for a new age, The Silver Age, it was decided to create a new Doctor Mid-Nite that was both a woman and a Non-American. Brilliant surgeon Dr. Karla Mitternacht led a busy life as an emergency surgeon in a rural Bavarian hospital, until she removed black glowing shards from a dying patient; exposure to the eerie energies gave her amazing powers, night vision, flight, darkness casting, moon-beams, enhanced strength and endurance. Her powers wax and wane with the day, she is weakest at noon and strongest at midnight, even becoming visibly stronger looking. She is nearly strong enough at midnight to take on Superman! By Issue #16 the writers, Otto Binder on this issue, referred to "The Golden Age" in the villains dialogue! She later went to America, to join The Super-Squad, where she was a member for 37 issues, 12 issues more than her own title lasted, until being replaced by Starman Junior. Ouch!
Later a younger version of Karla was time-lost, ending up in the 30th Century and teaming up with Night-Girl, Shadow Lass, and Phantom Girl in “The Darkest Mission!” She was later erased from existence when it was revealed she came from the Time Trapper’s Pocket Universe.
Status–never referred to again except in Super Squad Reprints.
P.S. I have been exposed to the new DC Universe, rebooted this month! Oh wow, they don’t wear their underwear on the outside anymore! They have lines on their clothes, is that amour? Same characters, including some mired in history such as Rocket Red or Guy Gardener. I was prepared to be outraged, only; so far, it looks just like the slow paced type of Action Hero Story you must endure in this modern era. Um, The Copper Age? The Tin Age? Or, The Last Gasp of the Paper Age?