Moritz Wilken[1] (born 19 May 1988[2] in Meerbusch),[3] better known by his stage name grim104, is a German rapper,[4] who is signed to the Hamburg label Buback.

[7][8] He then worked as an editor of the 'Polli-Magazins' and in 2010 began an internship at the editorial office of German rap website 'Rap.de' under the direction of journalist Marcus Staiger.

[10] The band name is an allusion to former hip-hop duo Westberlin Maskulin formed in the late 1990s by the rappers Kool Savas and Taktloss.

[5] According to a statement by Testo it was also because the term 'zugezogen' (moved to (Berlin) in contrast to being born there) functioned as an insult in the hip-hop scene.

[12] Videos were later also released for Entartete Kunst (Degenerated Art) and Undercut Tumblrblog.