Martin Valko, professionally known as Sergej Petronov, is a Slovak individual who gained recognition for his appearances in the gay adult entertainment industry, specifically within the realm of pornographic films and publications.
Standing at an impressive 6'1" and weighing approximately 190 pounds during his active career, Valko demonstrated versatility in his performances, successfully taking on both top and bottom roles.
However, Valko's video career was tragically cut short due to a car accident he was involved in during 1997, which resulted in severe injuries and ultimately led to his retirement from the industry. Despite the severity of his injuries, Valko made a remarkable recovery.
