Trond Bråthen (28 May 1977 – 13 May 2012), also known by the stage names Trondr Nefas and Alastor Nefas, or simply as Nefas, was a Norwegian singer-songwriter, guitarist and bassist. Despite being primarily known for his work as the vocalist and lead guitarist of black metal group Urgehal, which he founded in 1992 alongside Thomas "Enzifer" Søberg, he had numerous other projects as well, such as Beastcraft (in which he performed as "Alastor Nefas"), In Lingua Mortua, Endezzma (formerly known as Dim Nagel) and Angst Skvadron. In all of those side projects he collaborated with fellow musician and former Ásmegin member Lars Fredrik Frøislie.