Frank Booth has to be the single most, horrifying villain in cinematic history. There is no one else as psychotic, morbid and terrifying as him. Part of the reason he's such a frightening character is because he's so ordinary in appearance and yet vividly realistic in his portrayal of graphic, psycho violence. He could be the guy sitting beside you at a nightclub, or have the misfortune of meeting in the hallway of your building. This is one guy you certainly wouldn't want as a neighbor.
Throughout the film, Frank uses a medical mask and tube to inhale some kind of stimulant from an aerosol canister. The identity of this gas, at the time, was a subject of controversy. David Lynch, the director, specified helium, to raise Frank's voice and have it sound like a child during his irate tantrums. However, during filming, Dennis Hopper, who played the role of Booth, claimed to have insight into Booth's choice of drug, and said that helium was inappropriate. Hopper claims that the drug was amyl nitrite, a psychoactive muscle relaxant used recreationally as an inhalant in the disco club scene. When Frank whiffed enough of this stuff, look out, you wouldn't want to be in the same zipcode as him. And if you ever decide to buy Frank a beer at the bar, do make sure it's a Pabst Blue Ribbon.
Horror Hombres III will return, as there are still so many reprobates on the loose. Thanks everyone for visiting the series.