Greg "Greggo" Williams is an American former radio personality. Williams was most recently co-host of the sports talk program RAGE (Richie and Greggo Extravaganza) with Richie Witt. It aired at 2pm-7pm on KRLD-FM, "The Fan" 105.3, in Dallas, Texas. Williams first became popular as 'The Hammer', Mike Rhyner's partner on KTCK's top-rated The Hardline drivetime show, but his tenure there ended abruptly in 2008 after 13 years on the air.