The Walking Dead firmly established the Whisperers as the show's new villains in season 9. 1 / 7
And TWD's panel at SDCC 2019 revealed Thora Birch had been cast as Gamma. 2 / 7
Loyal to Alpha, Gamma is a new figure in the franchise. 3 / 7
Kevin Carroll has also been cast as Virgil, another TV original. 4 / 7
TWD usually cast extra characters for enemy communities. 5 / 7
And the role marks Birch's return to the mainstream. 6 / 7
This is likely part of TWD's continued deviation from the comics. 7 / 7