Marcel Antoine was a cartoonist, caricaturist, illustrator and animator. He was a singer for Radio-Schaerbeek, and he played sketches with the Bruxeles character 'Slache' for this radio station. 'Slache' also appeared in a series of comic strips published in Spirou magazine from 1939 ('Le Grand Voyage de Slache' and in the Flemish version Robbedoes as 'De Groote Reis van Toone').
Shortly before World War II, Antoine launched Slache magazine, in which he criticized Degrelle and the nazi movement. During the War, he played in cabarets. Afterwards, he started the humor weekly Pan with Léo Campion and Jean-Léo. Antoine also produced 'Boby' in Le Soir, and 'Bill & Bull' in Bravo!, and was the founder of the association of humorous artists La Mine Souriante in 1928.