Most members of the Legion of Super-Heroes have the same powers as the rest of their people, but some are unique. Condo Arlik was one of the latter. The people on Phlon had no innate powers, but Condo was born with the ability to alter the speed of chemical reactions, causing them to happen as quickly or as slowly as he wants.

Unfortunately, he couldn’t control his power, and so from birth Condo was isolated to protect others. He was also taught chemistry right away, in an attempt to help him gain control. Even so, it was not until Lyle Norg (Invisible Kid) stepped in that Condo, by then a teenager, was able to interact normally with others.

With Lyle’s help Condo learned to finally control his powers, and he immediately applied to and was accepted into the Legion Academy.

Condo, known now as Chemical King, was an excellent student and while still there, was asked to infiltrate the Legion of Super-Villains, since as a trainee he was unknown to them. He and his classmate Timber Wolf were successful in their mission and afterward graduated to full Legionnaire status. Sadly, Chemical King became depressed after Lyle died, and a short while later Condo sacrificed himself to prevent World War VII. A commemorative statue of him stands in the Legion’s Hall of Dead Legionnaires.

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.