His most grateful roles he got offered by Fritz Lang in his two most important silent movies: "Die Nibelungen" (1924) and the science-fiction classic "Metropolis" (1926).
Nothing is known about his further history and even his year of death can not be set for sure. (Probably 01.01.1970 in Berlin).
The actor Erwin Biswanger began his career at the theater, among others he appeared at the Lessing Theater in Berlin. It followed engagements at other theaters in Germany.
His last movies came already in the 20s. Afterwards his film career ended and even on stage he hardly made an appearance.
Only as a screen writer he co-operated in movies again.