Frank Booth is a fictional character and the main antagonist in David Lynch's 1986 psychological thriller Blue Velvet, portrayed by Dennis Hopper. A violent drug-dealer, he has kidnapped the family of lounge singer Dorothy Vallens, holding them hostage in order to force her into becoming his sex slave. Their encounters are characterized by Frank huffing an unknown gas from a tank he carries with him. This causes him to exhibit a split personality between two individuals he identifies as "Baby" and "Daddy," whose personas he assumes to engage in acts of ritualistic rape. One of Frank's associates is a police detective nicknamed "The Yellow Man" (for his distinctive yellow sport coat), who helps Frank by killing rival drug-dealers. The Yellow Man later steals their supplies from the evidence room, so Frank can sell them himself. Hopper's performance as Frank was critically acclaimed, and the character was ranked #36 on AFI's list of the top 50 film villains of all time. Portrayal Frank Booth is an over-the-top, crazed, loud, foul-mouthed and psychopathic gangster, drug-dealer and pimp, who is the central figure in Lumberton, North Carolina's criminal underworld. He is an aggressively unhinged, sadistic, perverse, abusive and animalistic man with a hair-trigger, light-switch-like temper that flares instantly into extreme rage and/or violence without warning or provocation. He also appears to have suffered extreme trauma and abuse as a child and had an incestuous relationship with his mother, which manifested his horrific and monstrously inhuman character traits- which he seems to enjoy having, as he enhances these traits by inhaling an unidentified gas from a tank. Booth kidnaps singer Dorothy Vallens' husband and son, holding them hostage to force Dorothy into becoming his sex slave. When he is with Dorothy, he exhibits a kind of split personality: "Daddy", a sadist who beats and demeans her, probably stemming from the abuse Booth suffered as a child from at the hands of his father; and "Baby", a child who ritualistically rapes her while begging her to gag him with a piece of blue velvet cloth, probably stemming from the abuse and incestuous relations he endured as a child at the hands of his mother. His sexual arousal is highlighted by fits of violent rage, enhanced by inhaling the aforementioned unidentified gas. After Dorothy proves reluctant to continue her relationship with Booth, he severs her husband's ear, which is found by college student Jeffrey Beaumont. While