Kelley Mack

Kelley Lynne Klebenow (July 10, 1992 – August 2, 2025), known professionally as Kelley Mack, was an American actress. She played Addy in season 9 of the series The Walking Dead (2018–2019). She also had roles in Profile (2018) and Broadcast Signal Intrusion (2021), and voiced Gwen Stacy/Spider-Woman as voice double for Hailee Steinfeld in the Spider-Man: Into the Spider-Verse (2018), Spider-Man: Across the Spider-Verse (2023), and promotional material.

Kelley Lynne Klebenow was born in Cincinnati on July 10, 1992, and had two younger siblings, including actor Parker Mack. Her parents were Kristen and Lindsay Klebenow. Her family moved frequently throughout her childhood. She began acting as a child, appearing in television commercials such as Dr. Pepper, Ross Stores, Dairy Queen, and Chick-fil-A. After graduating from Hinsdale Central High School in Illinois, she attended the Dodge College of Film and Media Arts at Chapman University, where she studied cinematography.

Mack worked in television, appearing on The Walking Dead, 9-1-1, and Chicago Med. She also appeared in films, including Broadcast Signal Intrusion. At the time of her death, Universal, a film in which she starred and executive produced, was yet to be released. Mack's last television commercial was for Rakuten with her mother.

Mack was in a relationship with Logan Lanier.

In January 2025, Mack announced she had been diagnosed with astrocytoma, a brain tumor that is a form of glioma. By April 2025, she had completed proton radiation treatment. Mack died in Cincinnati on August 2, 2025, at the age of 33. A memorial service was held on August 16 at the Glendale Lyceum in Glendale, Ohio. The family is also planning a celebration of her life for a future date in Los Angeles for her friends and colleagues in the area.