Catwoman has undergone fairly a few retcons in her 78 years or so of appearing in comics,cartoons, and film, or there are many takes on the character that portray her as everything from a heartless killer to a cool antihero — with a lot of twist and turns in between. Most consistently,she's a cat thief with a heart of gold who overcame her traumatic early years to live the tall life on other people's money.
Source: blastr.com