Pre dating dc
Superman is forced to play along with the ruse for a time, using super-speed to invisibly intervene in Lane's adventures, supporting the illusion.
She briefly sports a costume modeled on Superman's before the spell is "broken".
They helped him change history and conquer Earth-2 by stealing nuclear missiles from the Cuban Missile Crisis of Earth Prime, and when the Syndicate betrays him they are sent to 1982 of Earth-1, as he had made sure this would happen when they touched him.
She physically resembles an adult Kara Zor-El, with a similar costume, except instead of being blue-and-red with a pentagonal S shield, Luma's costume is white-and-green with a circular S emblem.
Superwoman is the name of several fictional characters, who are supervillains appearing in stories published by DC Comics.
All are evil or corrupted alternate-universe counterparts of Wonder Woman.
Superwoman first appeared in Justice League of America #29 (August 1964) alongside the rest of the Crime Syndicate of America.