This chapter explores the caricatural portrayal of a supposed Paraguayan monarchy in the Brazilian press during the War of the Triple Alliance (1864–1870). Unlike other chapters that focus on specific transatlantic monarchical experiences, this study examines how the monarchy—as a political concept—was mocked and delegitimized through visual satire. Using caricatures from Brazilian newspapers as primary sources, this chapter approaches political history through the lens of representations and the social imaginary. It argues that caricatures played a role in shaping and contesting collective identities and political legitimacy. By situating the alleged Paraguayan monarchy within the broader nineteenth-century South American political landscape—dominated by republican experiments but still influenced by monarchical traditions—this chapter highlights the symbolic hierarchies imposed by the Brazilian Empire. These visual narratives suggest that not all monarchical regimes were equally valued and that republics were not automatically associated with liberal values or popular sovereignty. Through this case study, this chapter contributes to a more nuanced understanding of how political forms were imagined, classified, and contested in the public discourse of postindependence South America.