Alexa Nisenson

Alexa Nisenson is an American actress who started acting professionally at eight years old and made her television debut in 2015 on NBC's Constantine as Geraldine Chandler. Her first feature film came in 2016 with Middle School: The Worst Years of My Life (2016), a role that earned her a Young Artist Award in 2017 for Best Performance in a Feature Film by a Supporting Young Actress. She went on to appear in Fist Fight (2017) and the television series Good Behavior and Will & Grace. In 2018 she began playing Charlie on AMC's Fear the Walking Dead, a recurring part that became a series regular role from season five until 2021, with a one-time return in 2023. She also led Orphan Horse (2018) as Shelly, opposite Jon Voight, and voiced Alexa Mongello on Summer Camp Island from 2018 to 2023. Later credits include the podcast Discovering Dad in 2024 and NCIS in 2025.