For some nations or communities, the construction of an identity proves more subtle than for others. As far as former colonies are concerned, this construction relies notably on an acute complexity as the identity is multidimensional and fractured. Although the two cases may seem radically different, one can see a similar battle aimed towards affirming an identity in Antillean and Qubcois literature. On the one hand, there is an undeniable influence of the French school and metropolitan norms. On the other hand, there is the need to exist through the flourishing of ones own culture and language. In the case of Antillean and Qubcois literatures, this fracture tends to turn into monstrosity. In this research, I will show that monstrosity is visible on several levels: in the fragmentation of the psyche, in the variety of themes evoked in the texts and in their structure. / French Language, Literatures and Linguistics