Vyacheslav Valerievich Mashnov (Russian: Вячеслав Валерьевич Машнов; born 9 May 1990) is a Russian hip-hop artist and television host. Better known by stage names Slava KPSS, Gnoyny, Sonya Marmeladova, Valentin Dyadka, Ptichiy Pepel, Vorovskaya Lapa, Vyacheslav Karelin and others.