Happy Birthday: Dr. Mid-Nite
Pieter Anton Cross started his association with superheroes while still in the womb—his pregnant mother was attacked one night in their native Norway by vagrants one night but was rescued by the original Dr. Mid-Nite.
The incident caused her to go into labor, and the superhero delivered Pieter before dashing off into the night. Pieter grew up to become a brilliant doctor, graduating Harvard at nineteen, and moved back to Norway for a time before returning to America to work with Charles McNider—who, unbeknownst to Pieter, was the same Dr. Mid-Nite who had saved him at birth!
Unfortunately, years later Pieter ran afoul of the evil Praeda Industries while investigating a mysterious drug A39 that they were marketing. The druglords captured him, drugged him with that same chemical, and put him behind the wheel of a car. When Pieter awoke he discovered that he had accidentally killed a woman, and that he was now blind but could see in the dark. To bring the druglords to justice he took the identity of his favorite superhero, becoming the second Dr. Mid-Nite.
Since then, Pieter has joined the JSA and become one of its guiding members, as well as its resident doctor.