Zygmunt drew a couple of gags and short stories for the comics magazine Spirou in the mid 1970s. He was an apprentice at Studio Peyo and produced the short stories 'Comment vous arrêter de fumer?' with Raoul Cauvin and 'Cell'aue j’préfère c’est la guerr de quatorz dix–huit' with Mazel in 1975. In 1976 he made two gags starring the character 'M. Henry', and he then disappeared from the radar. According to Daniel Kox in the book 'Cauvin La Monographie', Zygmunt's full name could be Félix Zygmunt. Kox also stated that Zygmunt later worked in a horses shop, and was involved in the tote.