This period covers the time near the turn of the century that an earlier super-group endeavored to fight crime in Gotham.

• Captain Hero, a wealthy landowner, adventurer, and inventor recruits Gotham's best and brightest to work outside of the law to retake Gotham for law and decency.
  • His first recruit is an old prospector who had come up with industrial hand-digging equipment known only as his code name Silver Dollar.
  • Captain Hero was sought out by a native american adventurer who became the second member of the group. He was code named Noble Savage.

http://www.independent.co.uk/arts-entertainment/books/features/the-100-favourite-fictional-characters-as-chosen-by-100-literary-luminaries-526971.html

https://en.wikipedia.org/wiki/Category:Characters_in_American_novels_of_the_19th_century