Johan Patrik Mattias Liiva (born 18 November 1970 in Helsingborg) is a Swedishextreme metal vocalist, most widely recognized as the founding vocalist of popular melodic death metal band Arch Enemy, as well as a former member of Carnage, Furbowl, and NonExist. He is currently working as vocalist with the band Hearse and with his former Arch Enemy bandmates in Black Earth.