

Lou Taylor Pucci as Ben "Benji" Ashby, Beck's wealthy, toxic sex partner.Reg Rogers as Professor Paul Leahy, Beck's graduate school advisor who sexually harassed her.Hari Nef as Blythe, a rival graduate student to Beck.Mooney, the owner of Mooney's and Joe's boss Victoria Cartagena as Claudia, Paco's mother.Nicole Kang as Lynn, another one of Beck's friends.Kathryn Gallagher as Annika, one of Beck's friends, a social media influencer.Daniel Cosgrove as Ron, the abusive boyfriend of Claudia and a parole officer.Shay Mitchell as Peach Salinger, Beck's wealthy best friend.Zach Cherry as Ethan Russell, a bookstore clerk who works with Joe.

Luca Padovan as Paco, Joe's young neighbor.Elizabeth Lail as Guinevere Beck, a struggling graduate student and an aspiring writer.Penn Badgley as Joe Goldberg, a serial killer and bookstore manager at Mooney's who stalks and then dates Beck.Main article: List of You characters Main
