Let's not forget Sam Grizzle - Absolutely the biggest asshole on the planet, bar none.
Men Nguyen has a big mouth and throws tantrums when he loses.
Kathy Liebert is another who has a mouth and a smartass attitude.
A few others who aren't too cool: Johnny Chan, Lyle Berman, David Grey, O'Neil Longston, Brent Carter, Barbara Enright, Frank Henderson, Huck Seed, Paul "Eskimo" Clark, Mickey Appleman, and John Bonetti.
On the high-class side, we might include: Mike Sexton, Daniel Negreaunu, Chris Bjorn, all of the Shulmans, Warren Karp, Dan Harrington, Barry Johnston, Billy O'Donnell, Humberto and Alex Brenes, An Tran, Walter Threadgill, Garland Walters, Blackie Blackburn, Perry Green, Dickie Carson, and Steve Zolotow.
I've probably forgotten twice as many on each list as I've listed. Also, some of them might not be with us anymore (I've been out of touch with it since the WSOP).