The Italian Dining Ghosts are a group of standard looking ghosts chased into an Italian restaurant by the Ghostbusters.
The Ghostbusters were hired to wrangle a group of ghosts. They chased them into an Italian restaurant. Some of the ghosts remained in the kitchen and some flew off into the dining room. Peter Venkman resorted to trickery to capture one by throwing a plate of food at him. As the ghost made itself intangible to avoid the plate and laughed, Peter wrangled him in a Proton Stream. Eventually, the Ghostbusters captured the ghosts using three Traps.
The ghosts appear to be mischievous, as evidenced by their choice to mess with food and throw it at the Ghostbusters.