Bob Livingston's father was a newspaper editor in Quincy, Illinois. As a reporter for the Los Angeles Daily News Bob did a story on the Pasadena Playhouse, and that got him interested in acting. In his mid-20s, he was doing bit parts for Universal and Fox and went from there to romantic roles with MGM. His first real success came with Republic, in 1936, as a masked hero in the serial The Vigilantes Are Coming (1936). That led to more cowboy roles and the leading role in the "Three Mesquiteer" series. He had more appearances (29) in that series than anyone else. He played other cowboy roles (Zorro in The Bold Caballero (1936)), worked with 阿尔·圣约翰 in the "Lone Rider" Series (1941-43) and finished up in a number of character parts in 吉恩·奥特里 and 罗伊·罗杰斯 movies.