Rieflin got his musical sea legs in Seattle, where he played in The Telepaths and The Blackouts. He collaborated with Ministry's Al Jourgensen early on as part of Revolting Cocks before joining Ministry and making some of the band's greatest albums with them -- specifically The Land Of Rape and Honey, The Mind Is A Terrible Thing To Taste, and Psalm 69.
This led to extensive work within the industrial genre, playing with bands like KMFDM, Pigface, Lard, 1,000 Homo DJs, and Swans. Among his albums with KMFDM are some of the band's most prominent and influential, including 1995's Nihil and 2002's Atak. He also toured with the band as a bassist.