From Wikipedia:

Wilfried Loll (born June 20, 1945, in Rippach) is a German actor.

Wilfried Loll studied theater studies and began his acting career at the Volksbühne Berlin. In addition to further engagements at various theaters, he also directed. After several appearances in films and television series, he was a regular cast member of the children's and youth series Schloss Einstein from 1998 to 2007, playing the founder and headmaster of the boarding school, Dr. Emanuel Stollberg.