entry for #CopyThisHairChallenge by #SaraSimm3r. Pose by #KassSimDesign #Skydonn NOCC. Barbara Felden was Agent 99 in the TV Series "Get Smart" that ran from September 18, 1965, to September 11, 1970. She was the "faithful assistant" that enabled Maxwell Smart to foil Kaos from taking over the World. Max and 99 marry in season four, and have twins in season five. Agent 99 became the first woman on an American hit sitcom to keep her job after marriage and motherhood.