Kelley Mack, the actress who portrayed the character Addy in the ninth season of the AMC series The Walking Dead, has passed away at 33 years old in her hometown of Cincinnati (United States), after a battle with a glioma of the central nervous system. The news was confirmed by her family, who highlighted the actress's "vibrant spirit, creative passion, and dedication."
Mack, who had worked and lived in Los Angeles for the past 11 years, had a diverse career in film and television. In addition to her role in The Walking Dead, she appeared in episodes of series such as 9-1-1 and Chicago Med. She also voiced Gwen Stacy, the character played by Hailee Steinfeld, in the Oscar-winning film Spider-Man: Into the Spider-Verse, a role she reprised in a Hyundai commercial.
Her filmography on the big screen includes titles like Broadcast Signal Intrusion (2021) and Delicate Arch (2024), as well as the upcoming Universal (2025), where she also served as an executive producer. The actress, born on July 10, 1992 under the name Kelley Lynne Klebenow, was passionate about storytelling from a young age, an interest that led her to study Cinematography at Chapman University.
In addition to her acting career, Mack was a renowned collegiate tennis player and enthusiast of activities such as hiking, pickleball, and country music. The actress also co-wrote several feature film scripts with her mother.