A former radio newscaster at
KNX and announcer, Manning entered the motion picture field in 1939 as an offscreen narrator. His distinctive voice and phrasing were noticed by other studios, and he quickly became one of the movies' busiest voice artists. Very often he was the trademark voice of several concurrent series. From 1940 to 1954 he was the narrator of
Columbia Pictures' popular adventure
serials, reading the sometimes tongue-in-cheek scripts with enthusiasm. (The voice-overs in the
Batman TV series of the 1960s owe much of their style to Knox Manning's breezy but urgent narrations of the 1940s, including his work in the two
Batman movie serials.) Away from Columbia, he was the commentator for
Warner Brothers' historical, musical, and novelty short subjects. He made his services available to independent producers as well, bringing equal vigor to a religious drama and an anti-vice crusade. In 1943 he joined
RKO Radio Pictures'
Flicker Flashbacks crew and became that series' most prolific narrator, working in more than half of the series' 34 comedies. Trade reviewers constantly praised this series of antique silent films re-edited with satirical soundtracks, and often singled out Knox Manning's comic timing as an important asset. Manning left Columbia in 1954 (when producer
Sam Katzman economized drastically on the studio's last four serials) and began working in Warner Brothers' publicity department, lending his voice to TV commercials for current Warner feature films. He appeared on camera in only a handful of films, most prominently (as himself) in the 1941 military comedy
Tanks a Million, the 1942 sports drama
Harmon of Michigan, starring
Tom Harmon, and the 1946 comedy feature
Mr. Hex, starring
The Bowery Boys. ==Radio==