The theme of this intervention-research is the use of the ethnofiction method for the preservation and dissemination of popular masquerade demonstrations in Carnival celebrations all over the state of Rio de Janeiro. This research seeks to investigate how Design can contribute to the ethnofiction method for Carnival masquerades, given the aesthetic, symbolic and performative diversity of these traditions. This study is based on the assumption that illustrated fiction is a technique with potential to significantly spread the documentary survey. Therefore, this research seeks to determine the effectiveness of using illustrated ethnofictions to build a procedural and collaborative memoir archive. The theoretical contributions of authors from the critical perspective and from the Latin American Cultural Studies were essential to examine, from the narrative point of view, popular demonstrations of Brazilian masquerades, and their intermittences, focusing on the European colonial influences on these traditions. In addition, the gathering of oral narratives, and photographic and textual records helped understand the challenges for preservation and dissemination of these masked traditions. As a proposal for intervention in the research field, an illustrated fictional narrative for children and teens was developed. Based on the dynamics performed along the research, it was possible to observe how the use of drawings had an enormous potential as stimulus for the gathering of new data, enabling a collaborative and participatory mapping process of these masquerade traditions.