10. Bane – Batman: Vengeance of Bane #1 (January 1993)
According to his creators, Bane was originally intended as a “dark mirror” of the highly disciplined and multi-skilled pulp hero Doc Savage. Savage was an early influence in the creation of the Dark Knight himself.
15. The Mad Hatter – Batman #49 (October-November 1948)
Jervis made his first appearance, along with Vikki Vale in 1948, and was locked in Arkham not to appear again until 1986. However, during his incarceration, beginning in Detective Comics #230, in April of 1956, another man took up the mantle of ‘The Mad Hatter’ claiming that in fact, HE was Jervis Tetch.