Georges Laurent Mazure was the brother of artist Alfred Mazure, the creator of 'Dick Bos', His work never reached the popularity of his brother's, but he still adequately mastered the art of comics and illustration. During his life, he often lived abroad, and therefore he has also drawn for several foreign clients. He worked for the Joop Geesink Filmproducties in the 1940s, where he did illustration work for the puppet film 'The Three Musketeers'.
From the late 1940s to the mid-1950s, he created various "beeldromans" (small comic books). He took over 'Spot Morton' from Ben Abas, and drew 15 episodes of this detective character, which was heavily critisized for its violence and immorality. He then made 'Maja knapt het wel op' for publisher John Kappee and a series of six 'Dolf Staal' beeldromans for the grocer's chain De Spar.
After the War, Mazure had also started with making political cartoons for the daily Algemeen Handelsbad, as well as illustrations for magazines like Panorama, Margriet and the Belgian Humo. In the 1960s, he often worked for the Toonder Studios, where he signed most of his work with Geo. He illustrated several episodes of the newspaper strip 'Horre, Harm en Hella' with scripts by Andries Brandt, which appeared in De Telegraaf.