Nyctolopia is a medical condition, night blindness. Sufferers have difficulty seeing under conditions of low light. However "Nyctalope" originated in a 1911 French pulp novel by Jean de la Hire, a prolific popular fiction writer of the early 20th century. La Hire (real name Adolphe d'Espi) wrote a lot of adventure and science-fantasy novels, among them a series featuring
Leo Saint-Clair, known as "The Nyctalope." Saint-Clair was a sort of cyborg, with mechanical enhancements including eyes that could see in the dark. Wikipedia says La Hire's Nyctalope series ended in the 1920s, though his son-in-law printed rewritten versions in 1950.
Here's the summary of de la Hire's career--which included writing a pro-Nazi book (1940) praising the Nazis for helping French war refugees!
https://en.wikipedia.org/wiki/Jean_de_La_HireIt appears the publishers of
Jean Lynx ripped off the name and some of the powers of the original. I still don't understand why a guy who
can see in the dark is called a "nyctalope" when nyctalopia makes people
unable to see at night