Aziz Sergeyevich Shavershian[2] (Russian: Ази́з Серге́евич Шавершя́н; 24 March 1989 – 5 August 2011),[3] better known by his Internet handle Zyzz,[4][5] 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.[6][7][8]

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.[9] On 5 August 2011, while on holiday in Thailand, Aziz suffered a heart attack and died at the age of 22.[4][10]