Marc SleenMarc Sleen.

Marcel Honoree Nestor (ridder) Neels (30 December 1922 to 6 November 2016), known as Marc Sleen, was a Belgian comics artist. He was mostly known for his humorous adventure comic The Adventures of Nero and Co., but also created gag comics like Piet Fluwijn en Bolleke, De Lustige Kapoentjes, Doris Dobbel, Oktaaf Keunink and De Ronde van Frankrijk. Sleen was one of the most celebrated comics artists in his home country.