Prolific character comedian, noted for his gauche manner and toothbrush moustache. He was the son of acting parents August Heinrich Junkermann and Rosa LaSeur. On stage from 1893 and ensemble member of the Trianon Theatre from 1902 to 1915. In films from 1911, including a brief 1930 sojourn in Hollywood, acting in German-language versions of American films under the direction of Jacques Feyder. Subsequently seen in many German A-grade productions until his death in 1943.