In 1880s he realised several plays for the stage as a director.
From 1910 Karl Baumgartner also took part in movies.
The actor Karl Baumgartner first finished a technology study but soon he became enthusiastic about the theater and he got acting lessons at the Kierschnerschen theater academy in the 1870s.
After finishing his acting lessons he appeared at the Nationaltheater in Berli. It followed engagements in Aachen, Dresden, Vienna Klagenfurt, Innsbruck, Linz and Salzburg.