Off the top of my head, with regards to poor quality characters.
Josh Geary, Wlanmania, Beanfan, MugenMundo, Chuchoryu, Mazemerald, Nexus Games/CvS Artist, KoopaKingdom.com, idiot, GooGoo64, Dark Chaos, any author who makes dumb hate characters, Adrian, Pgrs111Magen, and Kong.