Aziz Sergeyevich Shavershian (24 March 1989 - 5 August 2011), better known by his Internet handle Zyzz, was a Russian-born Australian bodybuilder, personal trainer and model. He established a cult following after posting multiple videos of himself on YouTube, starting in 2007.
In July 2011, Shavershian gained more media attention when The Sydney Morning Herald published an article about the arrest of his older brother, Said, for illegal possession of anabolic steroids. On 5 August 2011, while on holiday in Thailand, he suffered a heart attack and died at the age of 22.