"The Walking Dead" and "9-1-1" actress Kelley Mack died on Friday after a battle with Glioma in the central nervous system.

Kelley Mack, a film producer and actress who appeared in "The Walking Dead" and "Chicago Med," died after a brain cancer battle.

Kelley Mack, who played Hilltop resident Addy on 'The Walking Dead' and appeared in Dr Pepper's 'Fansville' ads, dies of a rare form of cancer at age 33.