Gimmick Gadgeteers: Meticuous Mechanics

Carl Draper was a seemingly average student in Smallville High School when he fell in love with classmate Lana Lang. However, due to the presence of that town's protector Superboy coupled with Carl's own frumpish physique, he wasn't noticed. As an adult, Carl dove into his career path as a master architect and locksmith, designing the elaborate Mount Olympus prison facility housing Superman's greatest adversaries on Earth-One. However, when his caped rival made the prison a floating prison instead, Lang herself renamed it Superman's Island, and this set off Carl on yet another path... this one towards evil as the Master Jailer.

Ikky Tinker the master mechanic working for Prop Wash whom he became partners with, along with his best friend aviator Hop Harrigan*. Together, the pair had scores of adventures side-by-side including during a period when Hop adopted the alter ego of the Guardian Angel. After Harrigan forsook that alias, his costume was worn briefly by Ikky who tried to replicate his pal's success. However, he was to heavy for the glider wings to keep him aloft. As for Tinker, once he adopted the nickname of Tank he along with Hop joined the Navy Air Force during World War II.

Draper through his genius replicated the powers of the Parasite, Atomic Skull and Metallo which he used against Superman. Leaving the now Man of Steel in a seemingly inescapable trap, Superman was nevertheless freed thanks to the assistance of Lana who rejected Carl's advances, leaving the fiend imprisoned himself. Carl would escape and resumed his costumed career, facing Supergirl in a series of clashes before renewing his grudge against her cousin. 

Ikky on one occasion alongside Hop met the Justice Society of America, including Superman. Pretending to be Ace aviator Super Duperman. Ikky’s piloting performance at an air show almost led to his crash landing until safed by Superman. Years later, Ikky would find true love in Hop’s long lost sister from South America, and found true happiness.

At one point, Master Jailer actually used a device to cause Superman to forget his heroic alias, and adopt a more civilian identity... neither he nor Carl realizing that Draper's childhood schoolmate Clark Kent was his foe's alter ego. As a means of taunting the man whom he viewed as stealing his true love, Master Jailer wore Superman's costumed underneath his own in order to protect himself, at least until its rightful owner recovered his memory and once more caged his cagey adversary.