Who's the darkest, most vile and disturbing housewives in your opinion?

You know how there are some people you feel just have that darkness and ugliness inside of them? Like they can have moments of humor and redemption from time to time but at the end of the day they're just awful, awful people?

For me it's Dorinda from RHONY and Marlo from RHOA.

Edit: can't believe I forgot about Jen Aydin.