The courier of the Millers, that is, a kind of combination tourist guide and butler who accompanies the family throughout their trip. Daisy and Mrs. Miller treat Eugenio quite familiarly, which is something else that counts against them to the Europeanized society they encounter. At the same time, Eugenio himself seems not to respect the Millers very much. He often seems to be holding back a smirk or criticism of Daisy’s behavior.