During the 1970s, the Who became a leading “Arena Rock” band. The band’s bombastic performances earned the group a devoted following among hard-rock-loving audiences in the United States. For Americans coming of age in the 1970s, the Who was on par with “heavy” bands like Led Zeppelin and Deep Purple. It was not until the 1979 premiere of the film Quadrophenia that many of the Who’s American fans fully realized the band’s Mod past. This chapter chronicles the Who’s initial reception in the United States, their hard-rocking reputation there throughout the 1970s, and the way in which Quadrophenia helped American fans reimagine the band once more. Importantly, it also considers how the film became the catalyst for a new Mod scene in the United States.