As many other comic artists, Liège-born Martin Jamar started out drawing caricatures of his teachers while still at school. A totally self-taught artist - he has a degree in Law - he made his debut in 1985 with 'Les Aventures de François Julien', a historical series scripted by Franklin Dehousse, of which five episodes were published by Éditions du Miroir and later Alpen.
In 1990, Jamar was present in Je Bouquine with an adaptation of Walter Scott's 'Ivanhoe', and in the Belgian school magazine Tremplin with illustrations. In 1992 he published the first installment in the historical series 'La Lettre de Feu' in Hello Bédé together with Yves Charlier. A book was published by Le Lombard in 1993, the same year that Jamar started 'Les Voleurs d'Empire' with Jean Dufaux in the collection Grafica of Glénat. This series ran until 2002, and Jamar and Dufaux continued their collaboration with 'Double Masque' between 2004 and 2013.