Like many other contemporaries after 1933 the Jew Eduard Rothauser did not have a future in Germany because of the National Socialists. He emigrated to Spain but was not able to continue there as an actor. Instead he worked for his own poultry farm.
The actor Eduard Rothauser first finished in law and was working as a lawyer for some time.
At the beginning of the 30s he could continue his film career in the new arising sound film before the political circumstances ended his career.
Because he was already interested in acting at a young age and run a amateur theater group as a teenager, he took some acting lessons. Afterwards he accepted the offer of Max Reinhardt who engaged him at the "Deutsches Theater" in Berlin in 1910.
In the 10s he became established as a demanded stage actor and he impersonated very different roles. His sister, the opera singer Therese Rothauser, chose an artistic career as well.