After a long wait, Quentin Tarantino's Once Upon a Time in Hollywood has finally landed in theaters. Set in 1969 Los Angeles, the primary story features the fictional Rick Dalton (Leonardo DiCaprio) and his stunt double Cliff Booth (Brad Pitt). His career in decline, Dicaprio's Dalton is thrilled to learn that two of the hottest new stars in Hollywood Roman Polanski and Sharon Tate have moved in next door to him. With the infamous Manson Family murders lurking over the story, Once Upon a Time traverses old school Hollywood on the eve of one of its darkest crimes. This serves as the backdrop for Once Upon a Time, which weaves in fictional characters and real life Hollywood stars into a revisionist history that only Tarantino could pull off—complete with subtle homages to classic cinema, characters, and celebrities. Below, we have a guide to all the characters who appear in Once Upon a Time in Hollywood and their real-life counterparts.