• Kelley Mack, known for her role in 'The Walking Dead,' passed away at 33.
• She suffered from glioma of the central nervous system, confirmed by her agent.
• Mack's sister announced her death on Instagram, highlighting her bravery.
• Colleagues and friends from the industry paid tribute to her memory.
• She leaves behind a legacy in television with roles in multiple series and films.

Actress Kelley Mack, widely recognized for her role as Addy in *The Walking Dead*, died on August 2 at the age of 33 after a battle with glioma of the central nervous system, a rare and malignant cancer. Her tragic passing occurred in her hometown of Cincinnati, Ohio. The announcement was made by her sister, Kathryn Klebenow, on Mack's official Instagram page, describing her as “a bright, fervent light” who will be profoundly missed by many. Mack’s agent, Julie Smith, confirmed the medical details, noting her courageous fight against the illness since her diagnosis was shared publicly in January this year, according to Newsweek, HuffPost, and Channel News Asia.

Kelley Mack was remembered for her warmth and creativity, with her final message reflecting her optimistic spirit amid her health struggles. In a heartfelt tribute, her sister emphasized how Mack “has already come to many of her loved ones in the form of various butterflies,” illustrating the impact she had on those around her. Mack's commitment to her craft was evident in her roles beyond *The Walking Dead*, including her appearances in *Chicago Med* and *9-1-1*, as noted in the affectionate remarks from her colleagues and friends in the entertainment industry, according to HuffPost and Channel News Asia.

Moreover, Mack was celebrated for her inspiration and enthusiasm, having touched many lives through both her on-screen roles and personal interactions. A CaringBridge obituary further described her significance to friends and family, showcasing her infectious enthusiasm and dedication to storytelling. At the time of her passing, Mack was actively promoting her upcoming film, *Universal*, which premiered in June, showcasing her legacy in the film industry, according to Newsweek and HuffPost.

In addition to her professional achievements, Kelley Mack leaves behind a loving family, including her parents, Kristen and Lindsay Klebenow, and siblings Parker and Kathryn. The outpouring of grief from fans and colleagues alike reflects her enduring spirit and the indelible mark she left on the entertainment community, highlighting a life that, although cut short, inspired and uplifted many, according to Channel News Asia.