The Walking Dead Season 10 First Look: Thora Birch Unmasked as Gamma | TVLine 

Thora Birch has been cast as Gamma, who is not only a sentry for our heroes’ new nemeses, the Whisperers, but a total Alpha acolyte. She is a dit to believe 200% in both the group’s animalistic way of life and in their merciless leader.
mots-clés: Walking Dead, season 10, cast, Thora Birch, gamma, whisperers, article, first look, photos, tvline, july 2019