Kelley Mack, The Walking Dead actress, dies at 33 after battling a brain tumor.

The entertainment industry is in mourning following the death of actress Kelley Mack, best known for her role as Addy in the ninth season of The Walking Dead. The actress, whose real name was Kelley Klebenow, died on August 2, 2025, in her hometown of Cincinnati, at the age of 33, due to a diffuse midline glioma, an aggressive type of brain tumor that was diagnosed a year ago.

The news was shared by her family on social media, where her younger sister described her as “a bright and fervent light” who passed away peacefully, surrounded by her mother and aunt.

Kelley Mack left an artistic career marked by her versatility. In addition to her appearances on The Walking Dead, she participated in series such as Chicago Med and 9‑1‑1, and in films such as Broadcast Signal Intrusion (2021) and Delicate Arch (2024). She also ventured into voiceover work, lending her voice to commercials for brands such as Dr. Pepper, Chick‑fil‑A, Dairy Queen, and Ross, and was even the voice match for Gwen Stacy in Spider‑Man: Into the Spider‑Verse.

Over the past year, the actress documented the challenges of her illness on social media, including the partial paralysis she suffered after a spinal biopsy. Despite the physical consequences, she shared moments of hope, showing progress in her mobility and thanking her family, friends, and partner, Logan, for their support. Her story touched many, becoming an example of strength and resilience.

Family and friends have found solace in small symbols after her passing, such as the appearance of butterflies, which they have interpreted as a message of her eternal presence. A memorial service to celebrate her life and legacy will be held on August 16 in Ohio, where those who knew her can pay tribute.

Kelley Mack leaves a deep void on the screen and in the lives of those around her, but her memory will live on through her work and the affection she inspired in all those who accompanied her during her short but significant career.

LATEST NEWS EDITORIAL