|“|| Flash: I can never figure you out! One minute, you're a hero, the next you're a criminal!|
Catwoman: I'm a complicated woman.
|~ Catwoman, when The Flash calls her out on her constantly changing alignment.|
None of these characters are Pure Good as it's impossible for an On & Off hero to be such as they remain permanently and incorruptibly good.
Although some of these heroes may never fully corrupt themselves, they are never Pure Good, even if sometimes they come very close.