Geo, pseudonym of Georges Debuyser, was born in Wolvertem and educated at the Stin-Jans-Molenbeek art school. He started his career in 1954 as layoutman for the Flemish newspapers from the Hoste publishing group (Het Laatste Nieuws, Kwik, De Post and Telstar). He also made political and sports cartoons and illustrations for these publications. Between 1960 and 1967 he made the adventurous comic strip 'Rolfke & Rulfke' for the children's weekly Pum Pum, a supplement of Het Laatste Nieuws.
Geo also drew the realistic newspaper strips 'Het leven van een mulat', 'De olympische 5000 meter van Gaston Reif' and 'De dood van Tom Simpsom' and the comic strip 'Tijl Uilenspiegel leeft in Vlaanderen' (1961). Debuyser then focused on painting.
Book publications of 'Rolfke en Rulfke' came only many years later, when publishers Brabant Strip (1999) and Peter Bonte (2005) began collecting the stories. Debuyser has also picked up his comic activities again, drawing new stories for 't Mannekesblad and Bonte in 2008 and 2009.