Otto Kruger (September 6, 1885 – September 6, 1974) was an American actor who began his career in 1915. His career was most prolific during the 1930s and 1940s. Otto Kruger (September 6, 1885 – September 6, 1974) was an American actor who began his career in 1915. His career was most prolific during the 1930s and 1940s.