The Hollywood Vampires was a group of famous male rock stars in the 70's. The hazing to get into the club was to out drink all the members. One photograph from an Alice Cooper: Prime Cuts documentary includes: Micky Dolenz, Keith Moon, Harry Nilsson, Alice Cooper, and Jack Cruz.
From the documentary:
Alice Cooper: ...The Speakeasy and Tramps were the place to be in London. There was a little loft at the Rainbow Bar and Grill in LA (W. Hollywood), they only had that for the club: the club was myself, Keith Moon, Ringo, Micky Dolenz, Harry Nilsson, it was that crowd, every night those same people. Every once in a while John Lennon would come into town or Keith Emerson and they would be honorable members of the night. They still have a plaque there at the Rainbow, where it says 'The Lair of the Hollywood Vampires.'