Kelley Mack, known for playing Addy in AMC’s “The Walking Dead,” has died at 33. Her family confirmed that she passed away peacefully in Cincinnati after battling glioma, a rare tumor that affects the brain and spinal cord.
Kelley, whose full name was Kelley Klebenow, built a steady acting career that reached audiences across TV dramas and commercial work. While not always in the spotlight, she consistently delivered heartfelt performances. Fans of “The Walking Dead” remember her for bringing depth and emotion to her character during season nine.
A Journey Rooted in Storytelling
Her passion for performance began early. As a child, she received a video camera for her birthday. That gift sparked a lasting love for filmmaking. She began acting in commercials for brands like Dr. Pepper, Dairy Queen, Ross, and Chick-fil-A. Over time, she shifted to more prominent roles on-screen.
She portrayed Penelope Jacobs in “Chicago Med” and had a notable guest role on “9-1-1.” In total, she earned 35 acting credits and five as a producer—clearly committed to growing her creative presence in the industry.
Kelley studied cinematography at Chapman University’s Dodge College of Film and Media Arts. She balanced performance and production, always staying curious and focused.
Known for Her Character, On and Off Screen
Kelley’s warmth wasn’t just a screen presence. Those who knew her personally describe her as encouraging, thoughtful, and deeply kind. Friends and co-stars often praised her for her authenticity and supportiveness.
Actress Alanna Masterson, who worked with Kelley in “The Walking Dead,” called her “an incredible human” and expressed pride in sharing the final episode with her.
Her Instagram tribute painted a picture of someone deeply loved. It described her as “a bright, fervent light” whose energy touched many. The message captured both her personal strength and the deep affection others had for her.
Family, Background, and Tributes
Born and raised in Cincinnati, Kelley graduated from Hinsdale Central High School before heading to California for college. She is survived by her parents Kristen and Lindsay Klebenow, her siblings Kathryn and Parker, her grandparents Lois and Larry Klebenow, and her boyfriend Logan Lanier.
Messages from fans and friends continue to pour in, remembering her as genuine, passionate, and full of life. Her work may have played out in short scenes and episodes, but the impression she left was lasting.
A Lasting Impact
Kelley Mack may not have had decades in the industry, but she left behind a meaningful body of work. Her roles, whether small or leading, carried emotion and purpose. More than that, her presence behind the scenes brought comfort and encouragement to others.
Her life reminds us that impact isn’t always measured in time or fame. Sometimes, it’s in the quiet way someone supports others, shows up with dedication, and lives with intention.
Through her acting, her voice work, and her personal connections, Kelley made a mark that will stay with those who watched her, worked with her, and loved her.