The Barfly is pre-War monster horror movie released around 2077 directed by Marlo Fitz and produced by Starlight Cinemas. The story was written by Spudge Dudley. It stars Chip Weathers as the Barfly, Howlett Funt as the Doc, and Rita Jean Scarlett as Hazel. No details on the plot of the Barfly are known.
The The Barfly movie posters can be seen in various locations in Fallout 4
Behind the scenes
The Barfly seems to be a reference to 1958 version of The Fly.