Holger Philipsen was educated in architecture in Copenhagen, but he eventually became an artist for the newspaper B.T. in 1940. He created the humor strip 'Carlt Nemli'. During World War II, he edited and contributed to illegal magazines like Muldvarpen. After the War, 'Carlt Nemli' returned to the pages of B.T., and was eventually featured in the weekly Søndags B.T., as well as Ekstra Bladet and other magazines over the next decades.
In addition to 'Carlt', Philipsen made the adventure comic 'Dan Frisk', as well as other humor strips, such as 'Nip & Nup' in King Kylie (1952-55) and 'Rasmus Dyrepasser' in Skipper Skræk (1955-63). From 1948, he continued the weekly strip based on the radio series 'Familien Hansen' for Landet, previously drawn by Mik and Helge Hau. He also designed stamps and cooperated on the animated film 'Gribedyret' in 1956.