Kelley Mack, The Walking Dead’s Addy, Dies at 33
In heartbreaking news, actress Kelley Mack, beloved for her role as Addy in Season 9 of AMC’s The Walking Dead, passed away at 33 on August 6, 2025, in Cincinnati. The cause of her death was glioma of the central nervous system, a rare and aggressive brain cancer, as confirmed by her family. The announcement has left fans and the entertainment world reeling.
A Bright Star’s Tragic Loss
Mack, born Kelley Lynne Klebenow, succumbed to her battle with glioma, per a statement from her sister Kathryn on Instagram: “Our dear Kelley’s fervent light has transitioned to the beyond.” Diagnosed in September 2024, Mack fought bravely, sharing updates about her treatment and recovery struggles, including mobility challenges post-surgery, per CaringBridge. Her vibrant spirit shone through until the end.
A Memorable Career
Mack’s role as Addy, a Hilltop Colony resident in The Walking Dead (2018–2019), captivated audiences across five episodes. Her 35 acting credits included roles in 9-1-1, Chicago Med, and films like Broadcast Signal Intrusion and Delicate Arch. She also voiced Gwen Stacy for Spider-Man: Into the Spider-Verse and starred in the upcoming Universal (2025), where she served as executive producer.
Fans and Stars Mourn
The news sparked an outpouring of grief on X, with #KelleyMack trending. “Such a bright soul gone too soon,” posted @TWDfan22. Co-star Anthony Michael Lopez wrote, “Kelley was a sweet soul who fought so hard.” Her family noted her love for storytelling, hiking, and animals, with butterflies symbolizing her presence post-passing.
A Lasting Legacy
Survived by her parents, Kristen and Lindsay, siblings Kathryn and Parker, and boyfriend Logan, Mack’s legacy endures through her art and warmth. A memorial is set for August 16 in Ohio. As fans, including those in the NFL community touched by her story, mourn, her courage and talent remain an inspiration.
Stay tuned for updates on Kelley Mack’s legacy.
