Together with Johann Ulricht he edits the annual avant-garde comics' magazine Plaque.
[2][3] From 2011 onward, Pfeiffer maintains an intimate conjunction with the Belgian visual artist Dominique Goblet.
[4] Pfeiffer wrote and drew a graphic documentary essay entitled Radioaktive forever which was added to the Japanese anthology No Nukes 2012, edited by Ryuichi Sakamoto.
In the autumn of 2012 Pfeiffer was guest teacher at the Hochschule der Bildenden Künste Saar.
[5] In September 2015 an exposition of drawings from the latest book Plus si entente by himself the Belgian visual artist Dominique Goblet at the Nabokov Museum in St. Petersburg was initially censored and shortly after dismantled by order of the University of St.