The goal of this work is to follow both the persistence and the concrete transformation of ethnic and ethic-related stereotypes and their public representations in the processes of the Slovak nationalism in the multinational Hungarian Kingdom in the second half of the 19th century and the first decade of the 20th century. In our article we focused on the visual form of depicting representatives of collective (especially ethnic) identities. We worked on the assumption, that this visual form occupies a specific position in the process of spreading stereotypes and fixing them over time. Especially rewarding objects of investigation for such research are caricatures. As the source material we chose political caricatures published in the popular Slovak humour magazine of this period, Černokňažník [The Wizard]. Through this caricatures we study images of „enemies“(especially in role of „traitor“ or „alien“) in the eyes of Slovak national patriots. In this sense we pay special attention to the figure of the Jew and „maďarón“ - Slovak term for someone who was (sometimes only supposedly) not „native“ Hungarian, but who was defending Hungarian political interests directed against Slovak national emancipation.