D-beat (also known as discrust, discore, Swedish hardcore or kängpunk) is a style of hardcore punk developed in the early 1980s by imitators of Discharge, after whom the genre is named, as well as a drum beat characteristic of this subgenre. Discharge may have themselves inherited the beat from Motörhead. The first such group was The Varukers. D-beat is closely associated with crust punk, which is a heavier, more complex variation. The style was particularly popular in Sweden, and developed there by groups such as Anti Cimex, Mob 47, Driller Killer, and No Security. Other D-beat groups include Doom, from the UK; Disclose, from Japan; Crucifix and Final Conflict, from the U.S.; Ratos de Porão, from Brazil; and MG15, from Spain. While the style initially developed in the early 1980s, a number of new groups working within the subgenre emerged in the mid-1990s. These include the Swedish groups Wolfpack, Totalitär, Avskum, Skitsystem and Disfear.