"Crazy" Cavan Grogan (died 15 February 2020) was a Welsh rockabilly singer and band leader. He formed Crazy Cavan & The Rhythm Rockers in 1970, with the band still actively touring and recording prior to Grogan's death in 2020. Grogan started out as "Screamin' Count Dracula & the Vampires", along with Lyndon Needs, Terry Walley and Gerald Bishop. Although they loved doing those first early gigs, the band was short-lived due to their young ages and no one having a driver's license.