Re: DC's New 52: Reviews and Discussion (Spoilers welcolme and likely)
Catwoman hasn't been a real villain for decades. She's been more of an anti-hero. It is still odd seeing her on a Justice League team, though.
"In Brightest Day, in Blackest Night, no evil shall escape my sight. Let those who worship evil's might, beware my power: Green Lantern's light!"