I would be really interested to know why the panelist classified Amanda Waller as a villainess, because I think if she were a man she'd definitely be an anti-hero. She's very much an antagonist at times but she's also an ally to the heroes when their interests align with hers. Her pre-reboot history is fascinating and her portrayal in Justice League Unlimited is amazing. She gets the job done, uses the tools at hand, and doesn't let Batman boss her around.