Background
He was born Andreas Leo Heinrich Edler von Mattoni in Karslbad, Bohemia, Austria-Hungary (now, Karlovy Vary, Czechoslovakian Republic).
He was born Andreas Leo Heinrich Edler von Mattoni in Karslbad, Bohemia, Austria-Hungary (now, Karlovy Vary, Czechoslovakian Republic).
Mattoni was originally cast in Fritz Language"s Metropolis (1927) but was replaced by Gustav Fröhlich four weeks into shooting.