Schulz displayed an impressive mastery of speed metal guitar skills and co-wrote many of KMFDM's songs in the 1990s.

In early manifestations of the KMFDM website, Schulz maintained a section called "Günter's Guitar Garage."

[1] Schulz is interested in photography and took many of the band portraits that appear in KMFDM and Slick Idiot liner notes.

Concert attendees also observed Schulz taking pictures of the crowd during KMFDM's Symbols tour (1997).

[2] He was part of PIG's touring line-up in the summer of 2006, thus reuniting with fellow KMFDM alumni Raymond Watts.