Frederick Jaeger

Frederick Jaeger was a German-born actor who found success working in British television.

Jaeger was born in Berlin, but moved to England following Adolf Hitler's rise to power in Germany. He was educated at Lord Weymouth's Grammar School, Warminster, and the Guildhall School of Music and Drama, from which he graduated in 1948, becoming a British subject two years later. He made his first theatre appearance in 1949, and his film debut, The Black Tent, in 1956. 

He had roles in three Doctor Who stories. He appeared as Jano in The Savages in 1966, and as Professor Sorenson in Planet of Evil in 1975. In 1977's The Invisible Enemy, he appeared as Professor Marius, creator of the robot dog K-9.