Bernard "Barney" Fife is a fictional character in the American television program The Andy Griffith Show, portrayed by comic actor Don Knotts. Barney Fife is a deputy sheriff in the slow-paced, sleepy, southern community of Mayberry, North Carolina. He appeared in the first five seasons (1960–65) as a main character, and after leaving the show towards the end of season five, made a few guest appearances in the three color seasons (1965–68). He also appeared in the first episode of the spin-off series Mayberry R.F.D. (1968–1971) and in the 1986 reunion television film Return to Mayberry.

Source: Wikipedia