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Worldwide, ロッソ (Roso , Rosso , ロッソ ) is quite a common epicene first name. The given name ロッソ is characteristic of Italy, where it is quite a rare dominantly male, but infrequently feminine name, Peru, where it is quite a rare male name, and Bolivia, where it is a rare masculine name. Measured by absolute frequency, it is commonest in Italy, Indonesia, and India. More prevalently, ロッソ is the last name as well as the forename.
ロッソ is also a name for the fictitious and mythical characters: Rosso , the operatic character in the opera Lo straniero by Ildebrando Pizzetti.