Robert Learned Coombs is a bum on the streets of New York. He is friends with fellow bum Harlan Bojay. He doesn't appear in the movie Ghostbusters, However he is in Ghostbusters: The Supernatural Spectacular which is a novelization of the movie.
He is a younger man with big dreams, but lacks reality.
He is an Oklahoma Indian that had came to New York to make his fortune as a singer. He had the drive, ambition, daring, pizzazz: but a voice he lacked.
Robert was in the streets in front of Casey J's Coffee and Books near Delgado's Gym as Egon Spengler arrived to take some readings. The next year, on the night of Day of the Dead, Robert was in Bushwick at the intersection of Central Avenue and Bleecker Street. The next year, in the spring, Robert and Harlan were on the Upper West Side near Dana's apartment one evening when Peter Venkman suddenly pulled up by them on Ecto-5. They were not pleased.
Appearance in Deleted scene
He is portrayed by Dan Aykroyd in a deleted scene of Ghostbusters, however his traits seem somewhat different from the novel. He is heavy in the movie unlike the novel, and his partner Harlan Bojay is not.