Cerie Xerox is a fictional character from the American television series 30 Rock, created by Tina Fey. She is portrayed by actress Katrina Bowden and serves as the assistant to the show's main character, Liz Lemon. Cerie is known for her youthful appearance and bubbly personality, often providing comic relief in the series. Throughout the show, Cerie navigates her job at the fictional television network NBC while dealing with the eccentricities of her coworkers. Her character often highlights themes of ambition and the challenges faced by young professionals in the workplace.