The initial of Mads, M is a semi-auto-biographical, surrealistic strip featuring himself and his girlfriend, "Madammen" (English: The Madam).

In 2002, M began daily publication in Dagbladet, initially on a "guest" basis, until the strip became a permanent fixture, causing Hägar the Horrible to be removed from the newspaper's comics section.

[3] M strips are published six times a week, Monday through Saturday, in the newspapers Dagbladet and Adresseavisen, and subsequently appear on the internet portal start.no.

In the summer of 2008, Eriksen stopped producing comic strips, citing the pressure of deadlines and illness as the reason.

With a comeback in Pondus # 10/21 in november 2021, Mads Eriksen has started to draw cartoons once again after his burnout in early 2010s.