Harmony
Harmony is a Red operative in the The Sons of Ares and a lieutenant of Dancer. She helps bring Darrow from the mines to the rebels.
Harmony trains Darrow before his entry into the Institute and favors violent retaliation.
Harmony tells Darrow that radiation killed her children and later her husband after the authorities refused treatment and repairs.
Harmony recruits Evey for bombings that kill civilians. She shows Darrow the unedited recording revealing Eo's pregnancy and tries to persuade him to bomb the Summit. Darrow later discovers that she has betrayed Dancer and Mickey.
Harmony is revealed as a leader of the The Red Hand, which attacks lowColor refugees as well as Republic and Gold targets.
The Red Hand kills Ulysses, Victra's newborn son. Lyria helps the prisoners revolt, and she and Victra corner Harmony in the tunnels. Victra throws Harmony into a pitviper nest, where she dies.