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.
Early life and education 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.
Career 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.
Personal life, illness, and death 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.
Filmography Film Year Title Role Notes 2008 The Elephant Garden Chloe Short film written and directed by Sasie Sealy 2015 Positive Catherine Short film also written, produced, directed, edited by Mack Safe and Sound Sydney Short film directed by Isaiah Shinn 2016 The Perfect One Lucy Canon Short film directed by Hisonni Mustafa Not Your Average Joe Sabrina Jones Short film written and directed by Dennis Larkin The Lost Stacey Short film directed by Victor Valerio A Knock at the Door Sara Short film written and directed by Katrina Rennells & Wendie Weldon (also produced and edited by Mack) Wheels on the Bus Maggie Adventure film directed by A.J. Bishop 2017 Exposure Pilar Short film written and directed by Larin Sullivan Slices of Life VR Christina Short film directed by Céline Tricart 2018 Profile Converted female Thriller film directed by Timur Bekmambetov based on In the Skin of a Jihadist by Anna Érelle Annie & Peter Annie Short film written and directed by Alex Alcheh Long Distance Trip Becca Comedy film written and directed by Shelley Dennis Simón Melissa Moore Short film written and directed by Diego Vicentini Spider-Man: Into the Spider-Verse Gwen Stacy / Spider-Woman Voice double for Hailee Steinfeld 2019 Violet Katie Short film directed by Rafael Hernán Gamboa Vincent Lia Short film directed by Xueou Yu 2021 Lulu Dom Short film directed by Chester Howie Broadcast Signal Intrusion Alice Horror suspense film directed by Jacob Gentry Shot in the Dark Sheryl Johns Drama film directed by Keene McRae 2023 Spider-Man: Across the Spider-Verse Gwen Stacy / Spider-Woman Voice double for Hailee Steinfeld 2024 My Own Silence Kenzie Short film written and directed by Matthew James Eberle Mr. Manhattan Tina Romantic film directed by Brian Herzlinger Delicate Arch Wilda Horror film written and directed by Matthew Warren 2025 Universal Ricky Science fiction film directed by Stephen Portland
Television Year Title Role Notes 2015 Unusual Suspects Paige Andreas Episode: "Last Dance" Grayson: Earth One Smirk Miniseries: Episode: "The Boy and the Bullet" 2017 Nasty Habits Mia Episode: "Rookie" 2018 EverReady Candice Miniseries: Episode: "Chapter Two: Double Booked" Unscrewed Talia Television pilot Coventry Morgan TV mini-series (4 episodes) 2018–2019 The Walking Dead Addy Recurring role, 5 episodes 2019 The AM Archives Alice Michaels Podcast series 9-1-1 Random woman Episode: "Sink or Swim" 2020 Schooled Danielle Episode: "Lainey's Mom" The College Tapes Alice Michaels Podcast series 2022 Chicago Med Penelope Jacobs Episode: "Mama Said There Would Be Days Like This"
See also List of Chapman University alumni
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