The work of the French illustrator and writer Gilles Bachelet has been recognised through numerous awards, but he is not yet sufficiently well known in the critical community. In this article, the multilevel humour that constructs his work is studied, both from an iconic and a textual perspective, as well as the situational humour and the humour of characters that emerge through metafiction, self-referentiality and heteroreferentiality. For this purpose, the theories of humour in children's literature and the classifications of types of humour offered by different researchers are used as a starting point, and a mixed model of analysis applicable to Bachelet's work as a whole is proposed. In addition, the analysis of each of the picturebooks is based on the most recent studies on the components of the current picturebook, such as its narrative construction, type of reading, characteristics and organisation of text and image. In this way, the postmodern features of Gilles Bachelet's works, which make him a crossover author, are revealed.