Antonio is reputed to be the best barista in Milan.  In Rock Chick, Coxy brings him to Fortnum's as a present to Indy Savage when Rosie Coltrane is missing.  Indy rejects the "present" and Tex Macmillan steps in to show he can make coffee.  Antonio isn't seen again.

"He looked like an Italian version of Rosie except better groomed. Slightly better." - Ashley, Kristen (2011-03-04). Rock Chick (Kindle Locations 5497-5498).