Colin Farrell as Oz Cobb in "The Penguin."Macall Polay/HBOOz Cobb (Colin Farrell) makes a horrifying decision in "The Penguin" finale.Showrunner Lauren LeFranc told Business Insider there was a "level of dread" on set when filming the scene.She also said that part of the HBO series was inspired by Italian mafiosos on TikTok.Warning: major spoilers ahead for "The Penguin.""The Penguin" fans may have been shocked when Oz Cobb (Colin Farrell) strangled his protégé Victor Aguilar (Rhenzy Feliz) in the show's finale after the homeless teenager called him family.