Yevhen Hapon (Ukrainian: Євген Гапон), also spelt Eugeny Gapon and Ievgen Gapon, better known by his stage name Knjaz Varggoth, is one of the foremost figures in Eastern Europe National Socialist black metal. Though he has been involved with numerous music projects and bands (Mistigo Varggoth Darkestra, Lucifugum (as a guest musician in 1997), Aryan Terrorism, Вече), he is most well known for being the lead vocalist and guitarist for the Ukrainian black metal band Nokturnal Mortum.
In 2002, Varggoth started another project by the name of Aryan Terrorism, to add to his increasingly wide range of projects outside Nokturnal Mortum, and to spread his political beliefs in a more explicit way. Another Nokturnal Mortum side project done by Varggoth is Mistigo Varggoth Darkestra, an ambient/black metal project formed in 1994. The most famous album of this project, The Key To The Gates Of The Apocalypse, is most likely known particularly due to its long runtime (one 72-minute track) and combination of dark ambient and fast black metal.
Varggoth has also taken part in the live shows and recordings of the Russian band Temnozor, and has participated in the Polish/Ukrainian white nationalist metal band Warhead, which includes members of Poland's skinhead band Honor.