In late March 2017, around one hundred artists graffitied a tribute wall in the city of Granada, Spain, paying homage to Andalusian feminist rapper Gata Cattana, who unexpectedly died three weeks earlier. Gata Cattana self-published her poetry, performed at underground venues and developed an experimental artistic practice by fusing her feminist politics with classical, anarchist and Andalusian references. In life and beyond, Cattana has become an influential feminist figure given her short but remarkable trajectory, which occurred in the midst of far-right escalation, leftist renewal and the transnational mobilization of feminisms. Thanks to numerous collective initiatives, Gata Cattana's legacy is continuing to expand in multiple ways. In this paper, I situate Gata Cattana's legacy as feminist archival cocreation, fostered by the political positioning of her lyrics and their popular iterability within urban art and feminist circuits after her death. Under the category of Archivo Gata Cattana, which I conceive as an open signifier addressing the heterogeneity of archives and archival practices that preserve the artist's place within a shared feminist imaginary, I analyze two performative acts: the graffiti tribute wall developed in the city of Granada a few weeks after her death and the circulation of Gata Cattana banners at the historical International Women's Strike throughout Spain on 8 March 2018 and 2019. My analysis displays a complementary understanding of Cattana's legacy through the constellation of, respectively, a mourning community and a political collectivity. By considering feminist archives as affective, ephemeral and connected to transnational activisms, my analysis of the Archivo Gata Cattana situates the cultural relevance of the artist within the historicization of Spanish rap and feminism in the context of post-15M social movements.