Actress Kelley Mack, known for playing Addy in Season 9 of The Walking Dead, died on August 2, 2025, at age 33, according to an account of her family’s announcement by ABC Audio. The Los Angeles Times reported that she died in Cincinnati.
What happened to Kelley Mack?
Mack’s family announced her death. ABC Audio reported that her mother, Kristen, and aunt, Karen, were with her when she died. The Los Angeles Times reproduced the family’s announcement, posted on Mack’s Instagram account: “It is with indelible sadness that we are announcing the passing of our dear Kelley. Such a bright, fervent light has transitioned to the beyond, where we all eventually must go.”
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ABC Audio reported that Mack disclosed a diffuse midline glioma diagnosis in January 2025. The Los Angeles Times described the diagnosis as a rare type of astrocytoma and reported that the cause of death was glioma of the central nervous system. These illness details were attributed to Mack’s statements and published reports.
Who was Kelley Mack in The Walking Dead?
Mack played Addy, a young Hilltop resident, in Season 9 of the AMC series. Addy’s story intersected with Henry and Lydia and the Whisperers. The role connected Mack to one of the show’s major storylines that season.
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What else did Kelley Mack work on?
Her credits included television, film, voice acting, commercials and voice-over work. Reports noted several roles beyond The Walking Dead:
- Chicago Med: Penelope Jacobs.
- Broadcast Signal Intrusion: Alice.
- Spider-Man: Into the Spider-Verse: voice work as Gwen Stacy.
Mack was born Kelley Lynne Klebenow in Cincinnati on July 10, 1992, and earned a cinematography degree from Chapman University’s Dodge College of Film in 2014, according to the Los Angeles Times.
Rank #2
- Genre: TV Horror
- Number of Tracks: 0
- Playback Duration: 5130
- Rating: TVMA
- Number of Movies: 0
How did her family remember her?
ABC Audio quoted a representative for Mack saying, “She will be so missed.” The outlet also reported that the family wrote: “Kelley has already come to many of her loved ones in the form of various butterflies. She will be missed by so many to depths that words cannot express.” The family announced an Ohio remembrance for August 16, 2025.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Where can viewers see Mack’s work?
The Walking Dead Season 9 is a natural place to revisit her performance as Addy. Availability depends on country and changes over time. AMC+ support describes past seasons as available through its dedicated Walking Dead Channel, but not as on-demand episodes; AMC also notes that not every season of every show is necessarily available. Check the current listing for your country and the specific season before subscribing or making plans to watch.
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Rank #3
- The Walking Dead: Dead City - Season 2 [Blu-Ray]
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