| Birth Day | December 30, 1922 |
| Birth Place | Belgium |
| Marc Sleen age | 98 YEARS OLD |
| Died On | Nov 6, 2016 (age 93) |
| Birth Sign | Capricorn |
Best known for the comic The Adventures of Nero, which ran for 55 years at a pace of two strips each day.
He was the political caricaturist for Flemish newspaper De Standaard following World War II.
He made the 1992 Guinness Book of Records for drawing the same comic strip singlehandedly for over four decades.
He was born in Gentbrugge, which is close to Ghent.
He wrote a "Nero" story line in which the lead character gave Joseph Stalin an elixir that turned him into a pacifist.
