This study analyzes first-person insights about the linguistic diversity in Greece from ten Greek nationals living in a diasporic European context with official trilingualism, Catalonia (Spain). Its aim is to check the influence of the 'mirror effect' (Cortès-Colomé, Montserrat, Mònica Barrieras & Pere Comellas. 2016. Changes in immigrant individuals' language attitudes through contact with Catalan: The mirror effect. "Language Awareness," 25(4), 272-289), that is, to uncover the ways in which their transnational life experiences and the discourses about language encountered in Catalonia may have influenced their ideologies about the linguistic diversity and the language policies of their country of origin. The data suggest an uneven impact among informants. While most informants reflected a monoglot and standard language ideology, a minority challenged such discourses prevailing in their home context and showed evidence of an impact of the host context on their language ideologies.