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Che (/tʃeɪ/; Spanish: [tʃe]; Portuguese: tchê [ˈtʃe]; Valencian: xe [ˈtʃe]) is an interjection commonly used in Argentina, Uruguay, Paraguay, Rio Grande do Sul (Brazil) and Valencia (Spain), signifying "hey!", "fellow", "guy". Che is mainly used as a vocative to call someone's attention (akin to "mate" or "buddy" in English), but it is often used as filler too (akin to "right" or "so" in English). The Argentine revolutionary Ernesto "Che" Guevara earned his nickname from his frequent use of the expression, which was perceived as foreign by his Cuban comrades.